PATENTS RELATED TO BIOCIDAL PRODUCTS AND COMPOUNDS

Although Dr. Demchick also represents patent seekers with non-biological inventions, his doctorate is in biology. Biology has been the primary focus of his research and teaching. He especially loves dealing with patent searches and applications for involving biology.

Dr. Demchick is a scientist with a quarter of a century of research experience in academic, industrial and governmental settings.

If you are considering patent protection for an invention, Dr. Demchick will be glad to discuss the matter with you. There is no charge for an initial discussion.

The following sampling is to give you some sense of the types of biocidal products and compounds related inventions which have received United States patent protection. The patent list is not exhaustive and is certainly not a substitute for a proper patent search . It should be noted that only U.S. Patents are included.

It should be noted that spelling, form and typographical errors in the original patents are preserved here.

Biocide impregnation of coatings for ESP components (United States Patent 7,144,549)

N-halamine vinyl compounds and their polymeric biocides (United States Patent 7,084,208)

Method for preparation of biocides mixed with carbon dioxide in a pressurized container (United States Patent 7,077,297)

Biocide-polyester concentrates and biocidal compositions prepared therefrom (United States Patent 7,041,307)

Biguanide/quaternary ammonium containing copolymeric biocides and use thereof in pharmaceutical compositions (United States Patent 6,936,640)

Biocide applicator for sugar cane (United States Patent 6,928,800)

Emulsified soil biocides used in drip irrigation systems (United States Patent 6,923,937)

Pyrithione biocides enhanced by zinc metal ions and organic amines (United States Patent 6,908,912)

emulsified soil biocides used in drip irrigation systems (United States Patent 6,908,592)

Particulate carrier for biocide formulations (United States Patent 6,905,698)

Resin immobilized biocide (United States Patent 6,875,797)

Biocide composition and related methods (United States Patent 6,866,870)

Biocide composition containing propionic acid and iodine compounds (United States Patent 6,852,340)

Process for disposing biocide-containing cooling water (United States Patent 6,849,664)

Bactericidal cleaning wipe containing a cationic biocide (United States Patent 6,841,527)

Decontaminating systems containing reactive nanoparticles and biocides (United States Patent 6,827,766)

Bactericidal cleaning wipe comprising a cationic biocide (United States Patent 6,825,158)

Deactivatable biocides for hydrocarbonaceous products (United States Patent 6,800,101)

Fiber cement composite material using biocide treated durable cellulose fibers (United States Patent 6,777,103)

N-halamine vinyl compounds and their polymeric biocides (United States Patent 6,768,009)

Gel inhibited liquid carrier for a biocide containing a carbodiimide and an emulsifier mixture (United States Patent 6,767,548)

Shelf life extension of microemulsions containing active aza biocide (United States Patent 6,740,653)

Bromine biocide removal (United States Patent 6,649,065)

Deactivatable biocides in ballast water (United States Patent 6,626,122)

Dendrimer biocide-silver nanocomposites: their preparation and applications as potent antimicrobials (United States Patent 6,579,906)

Silicone elastomer system having biocide properties useful in particular for making impressions in dentistry (United States Patent 6,559,199)

Air diffuser membrane treated with biocide (United States Patent 6,543,753)

Evaluation of biofilms and the effects of biocides thereon (United States Patent 6,498,862)

Gel inhibited liquid carrier for a biocide containing a carbodiimide and an emulsifier mixture (United States Patent 6,479,438)

Biocide-polyester concentrates and biocidal compositions prepared therefrom (United States Patent 6,475,505)

Topical medicament comprising phenolic biocide and choline (United States Patent 6,469,070)

System based on a biocide and on a polyether silicon for disinfecting hard surfaces (United States Patent 6,465,409)

Use of water-soluble polymers as biocides (United States Patent 6,458,348)

Biocide composition and use (United States Patent 6,455,558)

Biocide material and method of preparation of said material (United States Patent 6,437,021)

Synergistic biocidal activity if ternary complexes of negatively-charged biocides (component A), transition metal ions (component B), and neutral chelators (component C) (United States Patent 6,426,093)

Potentiation of biocide activity using a diethanolamide (United States Patent 6,413,531)

Bromine biocide removal (United States Patent 6,402,957)

Biocide and biocidal cloth containing a metal pyridinethione and additional biocide (United States Patent 6,399,560)

Sequestered metal biocides using ionic polymeric stabilizing agents (United States Patent 6,387,415)

Fabric, carpet and upholstery protectant with biocide and acaricide (United States Patent 6,379,686)

Synergistic biocide composition (United States Patent 6,361,788)

Ketoxime solutions of biocides (United States Patent 6,280,657)

Chelators in combination with biocides: treatment of microbially induced biofilm and corrosion (United States Patent 6,267,979)

Use of polymers as biocides (United States Patent 6,261,581)

Metal/thiol biocides (United States Patent 6,248,371)

Biocide impregnated fiber-reinforced sponge material (United States Patent 6,235,302)

Potentiation of biocide activity using diethanolamide (United States Patent 6,235,299)

Use of polymers containing .beta.-hydroxyalkylvinylamine units as biocides (United States Patent 6,214,885)

Synergistic composition of biocides (United States Patent 6,121,198)

Sulfamate stabilization of a bromine biocide in water (United States Patent 6,110,387)

Metal/thiol biocides (United States Patent 6,086,921)

Electrolytic generation of halogen biocides (United States Patent 6,059,942)

System for monitoring biocide treatments (United States Patent 6,054,030)

Potentiation of biocide activity using an N-alkyl heterocyclic compound (United States Patent 6,034,081)

Dry biocide (United States Patent 6,001,158)

Method and composition for inhibiting growth of microorganisms including peracetic acid and a non-oxidizing biocide (United States Patent 5,980,758)

Sunlight-ultraviolet-stable biocide compositions and uses thereof in water treatment (United States Patent 5,948,315)

Process for incorporating biocides into a liquid dispersion (United States Patent 5,929,132)

Cleaning and disinfectant biocide composition, and method for cleaning animal husbandry surfaces (United States Patent 5,891,922)

Oxaboroles and salts thereof, and their use as biocides (United States Patent 5,880,188)

Liquid biocide spray assembly (United States Patent 5,878,926)

Recombinant chitinase and use thereof as a biocide (United States Patent 5,866,788)

Stabilized solutions of bromonitromethane and their use as biocides (United States Patent 5,866,511)

Method and composition for inhibiting growth of microorganisms including peracetic acid and a non-oxidizing biocide (United States Patent 5,785,867)

Biocide plus surfactant for protecting carpets (United States Patent 5,762,650)

Synergistic microbicidal combinations containing 4,5-dichloro-2-octyl-3-isothiazolone and certain commercial biocides (United States Patent 5,759,786)

Synthetic plastic sleeve having a dry film biocide incorporated therein and method for treating a timber pole to inhibit sub-soil bio-deterioration of the pole (United States Patent 5,733,613)

Synergistic biocide composition containing pyrithione plus an additive (United States Patent 5,716,628)

Glycine anhydride dimethylol as a biocide and preservative (United States Patent 5,707,993)

Method of use of compositions of biocides and fluorescent indicators to control microbial growth (United States Patent 5,702,684)

Method and composition for inhibiting growth of microorganisms including peracetic acid and a non-oxidizing biocide (United States Patent 5,658,467)

Oil-in-water emulsions as substitutes for microbicides (biocides) in water carrying systems (United States Patent 5,656,177)

Activator for biocide (United States Patent 5,654,291)

Process for incorporating biocides into a liquid dispersion (United States Patent 5,639,803)

Synergy biocides for use in aqueous ore slurries (United States Patent 5,637,587)

Biocide treatment system and method (United States Patent 5,611,920)

Modular method and device for the evaluation of the ability of biocide to penetrate biofilm (United States Patent 5,605,836)

Biocides (United States Patent 5,596,102)

Glycine anhydride dimethylol as a biocide and preservative (United States Patent 5,593,681)

Synergistic microbicidal combinations containing 4,5-dichloro-2-octyl-3-isothiazolone and certain commercial biocides (United States Patent 5,591,760)

Biocide filter (United States Patent 5,580,447)

Stabilization of polyether polyamino methylene phosphonate scale inhibitors against degradation by bromine and chlorine biocides (United States Patent 5,565,106)

Synergistic biocide composition containing pyrithione plus an additive (United States Patent 5,540,920)

Rinse composition for photographic paper containing alkyl ether sulfate and biocide, and method of use (United States Patent 5,534,396)

Storage stable biocide composition and process for making the same (United States Patent 5,532,413)

Non-crystallizing C14 quaternary ammonium biocides (United States Patent 5,514,640)

Cyclodextrin-biocide complex (United States Patent 5,506,216)

Method and composition for inhibiting growth of microorganisms including peracetic acid and a second organic biocide (United States Patent 5,494,588)

Synergistic microbicidal combinations containing 2-methyl-3-isothiazolone and certain commercial biocides (United States Patent 5,489,588)

Glass fiber airduct with coated interior surface containing a biocide (United States Patent 5,487,412)

Silver halide photographic elements containing biocides (United States Patent 5,482,820)

N-sulfonyl carboxylic amide derivative including an N-containing 6-membered aromatic ring, or salt of the same, method for producing the same, and biocide (United States Patent 5,478,799)

Synergistic microbicidal combinations containing 4,5-dichloro-2-octyl-3-isothiazolone and certain commercial biocides (United States Patent 5,468,759)

3-isothiazolone biocide process (United States Patent 5,466,818)

Synergistic microbicidal combinations containing 4,5-dichloro-2-n-octyl-3-isothiazolone and certain commercial biocides (United States Patent 5,466,382)

Biocide composition and use (United States Patent 5,464,851)

Synergistic antimicrobial combination of polyether phosphonates and non-oxidizing biocides (United States Patent 5,457,083)

Biocide treatment system and method (United States Patent 5,453,207)

Stabilization of aminomethylene phosphonate scale inhibitors against degradation by bromine and chlorine biocides (United States Patent 5,449,476)

Biocide impregnation of coatings for ESP components (United States Patent 7,144,549)

N-halamine vinyl compounds and their polymeric biocides (United States Patent 7,084,208)

Method for preparation of biocides mixed with carbon dioxide in a pressurized container (United States Patent 7,077,297)

Biocide-polyester concentrates and biocidal compositions prepared therefrom (United States Patent 7,041,307)

Biguanide/quaternary ammonium containing copolymeric biocides and use thereof in pharmaceutical compositions (United States Patent 6,936,640)

Biocide applicator for sugar cane (United States Patent 6,928,800)

Emulsified soil biocides used in drip irrigation systems (United States Patent 6,923,937)

Pyrithione biocides enhanced by zinc metal ions and organic amines (United States Patent 6,908,912)

emulsified soil biocides used in drip irrigation systems (United States Patent 6,908,592)

Particulate carrier for biocide formulations (United States Patent 6,905,698)

Resin immobilized biocide (United States Patent 6,875,797)

Biocide composition and related methods (United States Patent 6,866,870)

Biocide composition containing propionic acid and iodine compounds (United States Patent 6,852,340)

Process for disposing biocide-containing cooling water (United States Patent 6,849,664)

Bactericidal cleaning wipe containing a cationic biocide (United States Patent 6,841,527)

Decontaminating systems containing reactive nanoparticles and biocides (United States Patent 6,827,766)

Bactericidal cleaning wipe comprising a cationic biocide (United States Patent 6,825,158)

Deactivatable biocides for hydrocarbonaceous products (United States Patent 6,800,101)

Fiber cement composite material using biocide treated durable cellulose fibers (United States Patent 6,777,103)

N-halamine vinyl compounds and their polymeric biocides (United States Patent 6,768,009)

Gel inhibited liquid carrier for a biocide containing a carbodiimide and an emulsifier mixture (United States Patent 6,767,548)

Shelf life extension of microemulsions containing active aza biocide (United States Patent 6,740,653)

Bromine biocide removal (United States Patent 6,649,065)

Deactivatable biocides in ballast water (United States Patent 6,626,122)

Dendrimer biocide-silver nanocomposites: their preparation and applications as potent antimicrobials (United States Patent 6,579,906)

Silicone elastomer system having biocide properties useful in particular for making impressions in dentistry (United States Patent 6,559,199)

Air diffuser membrane treated with biocide (United States Patent 6,543,753)

Evaluation of biofilms and the effects of biocides thereon (United States Patent 6,498,862)

Gel inhibited liquid carrier for a biocide containing a carbodiimide and an emulsifier mixture (United States Patent 6,479,438)

Biocide-polyester concentrates and biocidal compositions prepared therefrom (United States Patent 6,475,505)

Topical medicament comprising phenolic biocide and choline (United States Patent 6,469,070)

System based on a biocide and on a polyether silicon for disinfecting hard surfaces (United States Patent 6,465,409)

Use of water-soluble polymers as biocides (United States Patent 6,458,348)

Biocide composition and use (United States Patent 6,455,558)

Biocide material and method of preparation of said material (United States Patent 6,437,021)

Synergistic biocidal activity if ternary complexes of negatively-charged biocides (component A), transition metal ions (component B), and neutral chelators (component C) (United States Patent 6,426,093)

Potentiation of biocide activity using a diethanolamide (United States Patent 6,413,531)

Bromine biocide removal (United States Patent 6,402,957)

Biocide and biocidal cloth containing a metal pyridinethione and additional biocide (United States Patent 6,399,560)

Sequestered metal biocides using ionic polymeric stabilizing agents (United States Patent 6,387,415)

Fabric, carpet and upholstery protectant with biocide and acaricide (United States Patent 6,379,686)

Synergistic biocide composition (United States Patent 6,361,788)

Ketoxime solutions of biocides (United States Patent 6,280,657)

Chelators in combination with biocides: treatment of microbially induced biofilm and corrosion (United States Patent 6,267,979)

Use of polymers as biocides (United States Patent 6,261,581)

Metal/thiol biocides (United States Patent 6,248,371)

Biocide impregnated fiber-reinforced sponge material (United States Patent 6,235,302)

Potentiation of biocide activity using diethanolamide (United States Patent 6,235,299)

Use of polymers containing .beta.-hydroxyalkylvinylamine units as biocides (United States Patent 6,214,885)

Synergistic composition of biocides (United States Patent 6,121,198)

Sulfamate stabilization of a bromine biocide in water (United States Patent 6,110,387)

Metal/thiol biocides (United States Patent 6,086,921)

Electrolytic generation of halogen biocides (United States Patent 6,059,942)

System for monitoring biocide treatments (United States Patent 6,054,030)

Potentiation of biocide activity using an N-alkyl heterocyclic compound (United States Patent 6,034,081)

Dry biocide (United States Patent 6,001,158)

Method and composition for inhibiting growth of microorganisms including peracetic acid and a non-oxidizing biocide (United States Patent 5,980,758)

Sunlight-ultraviolet-stable biocide compositions and uses thereof in water treatment (United States Patent 5,948,315)

Process for incorporating biocides into a liquid dispersion (United States Patent 5,929,132)

Cleaning and disinfectant biocide composition, and method for cleaning animal husbandry surfaces (United States Patent 5,891,922)

Oxaboroles and salts thereof, and their use as biocides (United States Patent 5,880,188)

Liquid biocide spray assembly (United States Patent 5,878,926)

Recombinant chitinase and use thereof as a biocide (United States Patent 5,866,788)

Stabilized solutions of bromonitromethane and their use as biocides (United States Patent 5,866,511)

Method and composition for inhibiting growth of microorganisms including peracetic acid and a non-oxidizing biocide (United States Patent 5,785,867)

Biocide plus surfactant for protecting carpets (United States Patent 5,762,650)

Synergistic microbicidal combinations containing 4,5-dichloro-2-octyl-3-isothiazolone and certain commercial biocides (United States Patent 5,759,786)

Synthetic plastic sleeve having a dry film biocide incorporated therein and method for treating a timber pole to inhibit sub-soil bio-deterioration of the pole (United States Patent 5,733,613)

Synergistic biocide composition containing pyrithione plus an additive (United States Patent 5,716,628)

Glycine anhydride dimethylol as a biocide and preservative (United States Patent 5,707,993)

Method of use of compositions of biocides and fluorescent indicators to control microbial growth (United States Patent 5,702,684)

Method and composition for inhibiting growth of microorganisms including peracetic acid and a non-oxidizing biocide (United States Patent 5,658,467)

Oil-in-water emulsions as substitutes for microbicides (biocides) in water carrying systems (United States Patent 5,656,177)

Activator for biocide (United States Patent 5,654,291)

Process for incorporating biocides into a liquid dispersion (United States Patent 5,639,803)

Synergy biocides for use in aqueous ore slurries (United States Patent 5,637,587)

Biocide treatment system and method (United States Patent 5,611,920)

Modular method and device for the evaluation of the ability of biocide to penetrate biofilm (United States Patent 5,605,836)

Biocides (United States Patent 5,596,102)

Glycine anhydride dimethylol as a biocide and preservative (United States Patent 5,593,681)

Synergistic microbicidal combinations containing 4,5-dichloro-2-octyl-3-isothiazolone and certain commercial biocides (United States Patent 5,591,760)

Biocide filter (United States Patent 5,580,447)

Stabilization of polyether polyamino methylene phosphonate scale inhibitors against degradation by bromine and chlorine biocides (United States Patent 5,565,106)

Synergistic biocide composition containing pyrithione plus an additive (United States Patent 5,540,920)

Rinse composition for photographic paper containing alkyl ether sulfate and biocide, and method of use (United States Patent 5,534,396)

Storage stable biocide composition and process for making the same (United States Patent 5,532,413)

Non-crystallizing C14 quaternary ammonium biocides (United States Patent 5,514,640)

Cyclodextrin-biocide complex (United States Patent 5,506,216)

Method and composition for inhibiting growth of microorganisms including peracetic acid and a second organic biocide (United States Patent 5,494,588)

Synergistic microbicidal combinations containing 2-methyl-3-isothiazolone and certain commercial biocides (United States Patent 5,489,588)

Glass fiber airduct with coated interior surface containing a biocide (United States Patent 5,487,412)

Silver halide photographic elements containing biocides (United States Patent 5,482,820)

N-sulfonyl carboxylic amide derivative including an N-containing 6-membered aromatic ring, or salt of the same, method for producing the same, and biocide (United States Patent 5,478,799)

Synergistic microbicidal combinations containing 4,5-dichloro-2-octyl-3-isothiazolone and certain commercial biocides (United States Patent 5,468,759)

3-isothiazolone biocide process (United States Patent 5,466,818)

Synergistic microbicidal combinations containing 4,5-dichloro-2-n-octyl-3-isothiazolone and certain commercial biocides (United States Patent 5,466,382)

Biocide composition and use (United States Patent 5,464,851)

Synergistic antimicrobial combination of polyether phosphonates and non-oxidizing biocides (United States Patent 5,457,083)

Biocide treatment system and method (United States Patent 5,453,207)

Stabilization of aminomethylene phosphonate scale inhibitors against degradation by bromine and chlorine biocides (United States Patent 5,449,476)

Although his recognition as a registered patent agent permits him to represent others in all patent matters before the United States Patent and Trademark Office, Dr. Demchick limits his practice to patent matters involving inventions for which he is confident that his expertise will allow him to serve his client well. He will gladly discuss whether he is comfortable handling cases involving inventions in a particular field. He will err on the side of declining cases if he has uncertainty about his ability to do what is needed in the case. Dr. Demchick does not represent clients in court. However, he refers clients to a patent attorney who does represent others in court, if it appears likely that patent related representation in court is appropriate. Dr. Demchick prepares and files non-provisional (regular) patent applications and provisional patent applications. He prepares and files utility patent applications and design patent applications. He prepares and files U.S. patent applications and international patent applications under the Patent Cooperation Treaty (PCT). He prepares and files applications to enter the U.S. National Phase for inventions for which international patent applications (PCT) were already filed. One of the matters he discusses with each client or potential client is which type of application(s) best meets that client's needs. He usually does a patent search (patentability search) as part of the preparation of a patent application. He discusses the value of patent searching with each inventor before agreeing to prepare a patent application for that inventor.