RIBOFLAVIN (VITAMIN B2) PATENTS

Professor Demchick's Patent Services

Paul H. Demchick, United States Registered Patent Agent
(United States Patent and Trademark Office Registration 52,808)

PATENTS RELATED TO RIBOFLAVIN (VITAMIN B₂, FORMERLY "VITAMIN G")

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 riboflavin (vitamin B₂, formerly "vitamin G") 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.

Bacterial strains which overproduce riboflavin and methods of use thereof (United States Patent 7,091,000)
Microorganism for producing riboflavin and method for producing riboflavin using the same (United States Patent 7,078,222)
Riboflavin synthesis in yeast (United States Patent 6,929,933)
Use of riboflavin and flavin derivatives as chitinase inhibitors (United States Patent 6,875,766)
Process for preparing spray granules containing riboflavin (United States Patent 6,723,346)
Methods of identifying nucleic acid sequences encoding plant riboflavin synthase enzymes (United States Patent 6,682,891)
Nutrient medium for bacterial strains which overproduce riboflavin (United States Patent 6,551,813)
Genes of purine biosynthesis from Ashbya gossypii and the use thereof in microbial riboflavin synthesis (United States Patent 6,391,603)
Riboflavin production (United States Patent 6,376,222)
Riboflavin synthase genes and enzymes and methods of use (United States Patent 6,350,597)
Lumazine synthase and riboflavin synthase (United States Patent 6,323,013)
Riboflavin production (United States Patent 6,322,995)
Use of carotenoids as stabilizer of the color of riboflavin and riboflavin derivatives (United States Patent 6,221,412)
Process for making riboflavin glucoside (United States Patent 6,190,888)
Purification and crystallization of riboflavin (United States Patent 6,150,364)
Lumazine synthase and riboflavin synthase (United States Patent 6,146,866)
Process for producing riboflavin-containing granules (United States Patent 6,093,715)
Compositions containing in particular, riboflavin, for the local prevention of diseases of the genital and rectal mucus membranes (United States Patent 6,020,333)
Way of increasing the riboflavin content in spray-dried discharges from riboflavin fermentations (United States Patent 5,981,212)
Riboflavin-production process by means of micro-organisms with modified isocitratlyase activity (United States Patent 5,976,844)
Bacterial strains which overproduce riboflavin (United States Patent 5,925,538)
Riboflavin mutants as vaccines against Actinobacillus pleuropneumoniae (United States Patent 5,925,354)
Bacterial strains which overproduce riboflavin (United States Patent 5,837,528)
Riboflavin-biosynthesis in fungi (United States Patent 5,821,090)
Process for producing riboflavin (United States Patent 5,589,355)
Process for producing riboflavin by fermentation (United States Patent 5,334,510)
Spray granules or microgranules of pure riboflavin which contain no binder are non-dusting and free-flowing, and the preparation thereof (United States Patent 5,300,303)
Flour fortification formulation comprising granulated riboflavin (United States Patent 5,254,551)
Granulated riboflavin product having high flowability, high riboflavin content (United States Patent 5,236,920)
Efficient riboflavin production with yeast (United States Patent 5,231,007)
Method of purifying ferment-produced riboflavin (United States Patent 5,210,023)
Removal of riboflavin from fermentation suspensions (United States Patent 5,169,759)
Method for producing riboflavin with Candida famata (United States Patent 5,164,303)
Riboflavin granules containing no inactive ingredient (United States Patent 5,137,732)
Process for preparation of riboflavin (United States Patent 5,126,248)
Riboflavin producing strains of microorganisms (United States Patent 5,120,655)
Method for recovery of riboflavin (United States Patent 5,103,005)
Preparation of riboflavin 5'-phosphate (FMN) and its sodium salt in a lactone (United States Patent 5,095,115)
Use of supplemental dietary riboflavin to increase fertility and/or prolificacy in animals (United States Patent 5,063,226)
Riboflavin composition and method for production (United States Patent 5,034,389)
Preparation of riboflavin-5'-phosphate (5'-FMN) and its sodium salt, and of riboflavin-4',5'-cyclophosphoric acid ester chloride as an intermediate (United States Patent 5,017,700)
Process for spray drying riboflavin to produce a granulate product having low binder content (United States Patent 5,000,888)
Process for rotary fluid bed granulation of riboflavin (United States Patent 4,994,458)
Purification of salts of riboflavin 5'-phosphate, in particular of monosodium riboflavin 5'-phosphate (United States Patent 4,987,229)
Preparation of riboflavin, produced by a microbial method, in the form of spray-dried granules or microgranules (United States Patent 4,977,190)
Preparation of riboflavin (United States Patent 4,806,643)
Process for the preparation of riboflavin (United States Patent 4,794,081)
Purification of riboflavin (United States Patent 4,687,847)
Preparation of riboflavin (United States Patent 4,673,742)
Preparation of riboflavin, and 4,5-dimethyl-N-(D)-ribityl-2-(O-alkoxyphenylazo)-aniline intermediates (United States Patent 4,656,275)
Purification of riboflavin (United States Patent 4,567,262)
Preparation of riboflavin (United States Patent 4,567,261)
Complexation of anthracycline and anthraquinone antibiotics by the apo riboflavin binding protein from eggs (United States Patent 4,534,971)
Process for the preparation of riboflavin (United States Patent 4,355,158)
Riboflavin purification (United States Patent 4,165,250)
Free-flowing, high density, agglomerated riboflavin powders (United States Patent 3,959,472)
Bacterial strains which overproduce riboflavin and methods of use thereof (United States Patent 7,091,000)
Microorganism for producing riboflavin and method for producing riboflavin using the same (United States Patent 7,078,222)
Riboflavin synthesis in yeast (United States Patent 6,929,933)
Use of riboflavin and flavin derivatives as chitinase inhibitors (United States Patent 6,875,766)
Process for preparing spray granules containing riboflavin (United States Patent 6,723,346)
Methods of identifying nucleic acid sequences encoding plant riboflavin synthase enzymes (United States Patent 6,682,891)
Nutrient medium for bacterial strains which overproduce riboflavin (United States Patent 6,551,813)
Genes of purine biosynthesis from Ashbya gossypii and the use thereof in microbial riboflavin synthesis (United States Patent 6,391,603)
Riboflavin production (United States Patent 6,376,222)
Riboflavin synthase genes and enzymes and methods of use (United States Patent 6,350,597)
Lumazine synthase and riboflavin synthase (United States Patent 6,323,013)
Riboflavin production (United States Patent 6,322,995)
Use of carotenoids as stabilizer of the color of riboflavin and riboflavin derivatives (United States Patent 6,221,412)
Process for making riboflavin glucoside (United States Patent 6,190,888)
Purification and crystallization of riboflavin (United States Patent 6,150,364)
Lumazine synthase and riboflavin synthase (United States Patent 6,146,866)
Process for producing riboflavin-containing granules (United States Patent 6,093,715)
Compositions containing in particular, riboflavin, for the local prevention of diseases of the genital and rectal mucus membranes (United States Patent 6,020,333)
Way of increasing the riboflavin content in spray-dried discharges from riboflavin fermentations (United States Patent 5,981,212)
Riboflavin-production process by means of micro-organisms with modified isocitratlyase activity (United States Patent 5,976,844)
Bacterial strains which overproduce riboflavin (United States Patent 5,925,538)
Riboflavin mutants as vaccines against Actinobacillus pleuropneumoniae (United States Patent 5,925,354)
Bacterial strains which overproduce riboflavin (United States Patent 5,837,528)
Riboflavin-biosynthesis in fungi (United States Patent 5,821,090)
Process for producing riboflavin (United States Patent 5,589,355)
Process for producing riboflavin by fermentation (United States Patent 5,334,510)
Spray granules or microgranules of pure riboflavin which contain no binder are non-dusting and free-flowing, and the preparation thereof (United States Patent 5,300,303)
Flour fortification formulation comprising granulated riboflavin (United States Patent 5,254,551)
Granulated riboflavin product having high flowability, high riboflavin content (United States Patent 5,236,920)
Efficient riboflavin production with yeast (United States Patent 5,231,007)
Method of purifying ferment-produced riboflavin (United States Patent 5,210,023)
Removal of riboflavin from fermentation suspensions (United States Patent 5,169,759)
Method for producing riboflavin with Candida famata (United States Patent 5,164,303)
Riboflavin granules containing no inactive ingredient (United States Patent 5,137,732)
Process for preparation of riboflavin (United States Patent 5,126,248)
Riboflavin producing strains of microorganisms (United States Patent 5,120,655)
Method for recovery of riboflavin (United States Patent 5,103,005)
Preparation of riboflavin 5'-phosphate (FMN) and its sodium salt in a lactone (United States Patent 5,095,115)
Use of supplemental dietary riboflavin to increase fertility and/or prolificacy in animals (United States Patent 5,063,226)
Riboflavin composition and method for production (United States Patent 5,034,389)
Preparation of riboflavin-5'-phosphate (5'-FMN) and its sodium salt, and of riboflavin-4',5'-cyclophosphoric acid ester chloride as an intermediate (United States Patent 5,017,700)
Process for spray drying riboflavin to produce a granulate product having low binder content (United States Patent 5,000,888)
Process for rotary fluid bed granulation of riboflavin (United States Patent 4,994,458)
Purification of salts of riboflavin 5'-phosphate, in particular of monosodium riboflavin 5'-phosphate (United States Patent 4,987,229)
Preparation of riboflavin, produced by a microbial method, in the form of spray-dried granules or microgranules (United States Patent 4,977,190)
Preparation of riboflavin (United States Patent 4,806,643)
Process for the preparation of riboflavin (United States Patent 4,794,081)
Purification of riboflavin (United States Patent 4,687,847)
Preparation of riboflavin (United States Patent 4,673,742)
Preparation of riboflavin, and 4,5-dimethyl-N-(D)-ribityl-2-(O-alkoxyphenylazo)-aniline intermediates (United States Patent 4,656,275)
Purification of riboflavin (United States Patent 4,567,262)
Preparation of riboflavin (United States Patent 4,567,261)
Complexation of anthracycline and anthraquinone antibiotics by the apo riboflavin binding protein from eggs (United States Patent 4,534,971)
Process for the preparation of riboflavin (United States Patent 4,355,158)
Riboflavin purification (United States Patent 4,165,250)
Free-flowing, high density, agglomerated riboflavin powders (United States Patent 3,959,472)
Bacterial strains which overproduce riboflavin and methods of use thereof (United States Patent 7,091,000)
Microorganism for producing riboflavin and method for producing riboflavin using the same (United States Patent 7,078,222)
Riboflavin synthesis in yeast (United States Patent 6,929,933)
Use of riboflavin and flavin derivatives as chitinase inhibitors (United States Patent 6,875,766)
Process for preparing spray granules containing riboflavin (United States Patent 6,723,346)
Methods of identifying nucleic acid sequences encoding plant riboflavin synthase enzymes (United States Patent 6,682,891)
Nutrient medium for bacterial strains which overproduce riboflavin (United States Patent 6,551,813)
Genes of purine biosynthesis from Ashbya gossypii and the use thereof in microbial riboflavin synthesis (United States Patent 6,391,603)
Riboflavin production (United States Patent 6,376,222)
Riboflavin synthase genes and enzymes and methods of use (United States Patent 6,350,597)
Lumazine synthase and riboflavin synthase (United States Patent 6,323,013)
Riboflavin production (United States Patent 6,322,995)
Use of carotenoids as stabilizer of the color of riboflavin and riboflavin derivatives (United States Patent 6,221,412)
Process for making riboflavin glucoside (United States Patent 6,190,888)
Purification and crystallization of riboflavin (United States Patent 6,150,364)
Lumazine synthase and riboflavin synthase (United States Patent 6,146,866)
Process for producing riboflavin-containing granules (United States Patent 6,093,715)
Compositions containing in particular, riboflavin, for the local prevention of diseases of the genital and rectal mucus membranes (United States Patent 6,020,333)
Way of increasing the riboflavin content in spray-dried discharges from riboflavin fermentations (United States Patent 5,981,212)
Riboflavin-production process by means of micro-organisms with modified isocitratlyase activity (United States Patent 5,976,844)
Bacterial strains which overproduce riboflavin (United States Patent 5,925,538)
Riboflavin mutants as vaccines against Actinobacillus pleuropneumoniae (United States Patent 5,925,354)
Bacterial strains which overproduce riboflavin (United States Patent 5,837,528)
Riboflavin-biosynthesis in fungi (United States Patent 5,821,090)
Process for producing riboflavin (United States Patent 5,589,355)
Process for producing riboflavin by fermentation (United States Patent 5,334,510)
Spray granules or microgranules of pure riboflavin which contain no binder are non-dusting and free-flowing, and the preparation thereof (United States Patent 5,300,303)
Flour fortification formulation comprising granulated riboflavin (United States Patent 5,254,551)
Granulated riboflavin product having high flowability, high riboflavin content (United States Patent 5,236,920)
Efficient riboflavin production with yeast (United States Patent 5,231,007)
Method of purifying ferment-produced riboflavin (United States Patent 5,210,023)
Removal of riboflavin from fermentation suspensions (United States Patent 5,169,759)
Method for producing riboflavin with Candida famata (United States Patent 5,164,303)
Riboflavin granules containing no inactive ingredient (United States Patent 5,137,732)
Process for preparation of riboflavin (United States Patent 5,126,248)
Riboflavin producing strains of microorganisms (United States Patent 5,120,655)
Method for recovery of riboflavin (United States Patent 5,103,005)
Preparation of riboflavin 5'-phosphate (FMN) and its sodium salt in a lactone (United States Patent 5,095,115)
Use of supplemental dietary riboflavin to increase fertility and/or prolificacy in animals (United States Patent 5,063,226)
Riboflavin composition and method for production (United States Patent 5,034,389)
Preparation of riboflavin-5'-phosphate (5'-FMN) and its sodium salt, and of riboflavin-4',5'-cyclophosphoric acid ester chloride as an intermediate (United States Patent 5,017,700)
Process for spray drying riboflavin to produce a granulate product having low binder content (United States Patent 5,000,888)
Process for rotary fluid bed granulation of riboflavin (United States Patent 4,994,458)
Purification of salts of riboflavin 5'-phosphate, in particular of monosodium riboflavin 5'-phosphate (United States Patent 4,987,229)
Preparation of riboflavin, produced by a microbial method, in the form of spray-dried granules or microgranules (United States Patent 4,977,190)
Preparation of riboflavin (United States Patent 4,806,643)
Process for the preparation of riboflavin (United States Patent 4,794,081)
Purification of riboflavin (United States Patent 4,687,847)
Preparation of riboflavin (United States Patent 4,673,742)
Preparation of riboflavin, and 4,5-dimethyl-N-(D)-ribityl-2-(O-alkoxyphenylazo)-aniline intermediates (United States Patent 4,656,275)
Purification of riboflavin (United States Patent 4,567,262)
Preparation of riboflavin (United States Patent 4,567,261)
Complexation of anthracycline and anthraquinone antibiotics by the apo riboflavin binding protein from eggs (United States Patent 4,534,971)
Process for the preparation of riboflavin (United States Patent 4,355,158)
Riboflavin purification (United States Patent 4,165,250)
Free-flowing, high density, agglomerated riboflavin powders (United States Patent 3,959,472)
Bacterial strains which overproduce riboflavin and methods of use thereof (United States Patent 7,091,000)
Microorganism for producing riboflavin and method for producing riboflavin using the same (United States Patent 7,078,222)
Riboflavin synthesis in yeast (United States Patent 6,929,933)
Use of riboflavin and flavin derivatives as chitinase inhibitors (United States Patent 6,875,766)
Process for preparing spray granules containing riboflavin (United States Patent 6,723,346)
Methods of identifying nucleic acid sequences encoding plant riboflavin synthase enzymes (United States Patent 6,682,891)
Nutrient medium for bacterial strains which overproduce riboflavin (United States Patent 6,551,813)
Genes of purine biosynthesis from Ashbya gossypii and the use thereof in microbial riboflavin synthesis (United States Patent 6,391,603)
Riboflavin production (United States Patent 6,376,222)
Riboflavin synthase genes and enzymes and methods of use (United States Patent 6,350,597)
Lumazine synthase and riboflavin synthase (United States Patent 6,323,013)
Riboflavin production (United States Patent 6,322,995)
Use of carotenoids as stabilizer of the color of riboflavin and riboflavin derivatives (United States Patent 6,221,412)
Process for making riboflavin glucoside (United States Patent 6,190,888)
Purification and crystallization of riboflavin (United States Patent 6,150,364)
Lumazine synthase and riboflavin synthase (United States Patent 6,146,866)
Process for producing riboflavin-containing granules (United States Patent 6,093,715)
Compositions containing in particular, riboflavin, for the local prevention of diseases of the genital and rectal mucus membranes (United States Patent 6,020,333)
Way of increasing the riboflavin content in spray-dried discharges from riboflavin fermentations (United States Patent 5,981,212)
Riboflavin-production process by means of micro-organisms with modified isocitratlyase activity (United States Patent 5,976,844)
Bacterial strains which overproduce riboflavin (United States Patent 5,925,538)
Riboflavin mutants as vaccines against Actinobacillus pleuropneumoniae (United States Patent 5,925,354)
Bacterial strains which overproduce riboflavin (United States Patent 5,837,528)
Riboflavin-biosynthesis in fungi (United States Patent 5,821,090)
Process for producing riboflavin (United States Patent 5,589,355)
Process for producing riboflavin by fermentation (United States Patent 5,334,510)
Spray granules or microgranules of pure riboflavin which contain no binder are non-dusting and free-flowing, and the preparation thereof (United States Patent 5,300,303)
Flour fortification formulation comprising granulated riboflavin (United States Patent 5,254,551)
Granulated riboflavin product having high flowability, high riboflavin content (United States Patent 5,236,920)
Efficient riboflavin production with yeast (United States Patent 5,231,007)
Method of purifying ferment-produced riboflavin (United States Patent 5,210,023)
Removal of riboflavin from fermentation suspensions (United States Patent 5,169,759)

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.