PATENTS RELATED TO SPECTROPHOTOMETRY

Although it is not necessary for a patent agent to have personal experience with the specific subject matter, it has its advantages. Dr. Demchick's experience includes laboratory experience involving spectrophotometry.

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 spectrophotometry 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.

Weed puller (United States Patent 7,117,954)

Weed pulling system (United States Patent 7,108,076)

Weed puller (United States Patent 7,100,899)

Aquatic weed suppressor (United States Patent 7,083,358)

Multipurpose, hand held, weed extracting, garden tool (United States Patent 7,083,001)

Selective weed discrimination (United States Patent 7,081,611)

Weed control process (United States Patent 7,071,147)

Weed extracting device (United States Patent 7,059,421)

Weed cutter mounting system (United States Patent 7,028,455)

Weed and grass trimmer (United States Patent 7,017,272)

Weed cutting golf club (United States Patent 6,988,954)

Weed plucker (United States Patent 6,959,768)

Weed extraction tool (United States Patent 6,951,255)

Weed removal device (United States Patent 6,938,937)

Weed deflector for an outboard motor water intake (United States Patent 6,935,908)

Method for producing transgenic plants resistant to weed control compounds which disrupt the porphyrin pathways of plants (United States Patent 6,906,245)

Weed trimmer safety guard (United States Patent 6,892,461)

Method of weed control (United States Patent 6,877,275)

Weed guard (United States Patent 6,837,487)

Weed puller (United States Patent 6,758,459)

Weed trimmer shield kit (United States Patent 6,757,980)

Natural herbicide for weed removal (United States Patent 6,756,341)

Shielding apparatus secured to landscaping material for shielding a plant from weed growth (United States Patent 6,754,989)

Weed, weed root and root vine removing, cultivating tool (United States Patent 6,736,217)

Non-invasive self-cleaning weed extractor tool (United States Patent 6,726,264)

Rotary hand-held tilling and weed removing device (United States Patent 6,722,444)

Adapter for a weed eater (United States Patent 6,722,040)

Weed cutter including multi-medium weed cutting head (United States Patent 6,715,270)

Weed-gripping pry tool (United States Patent 6,698,526)

Use of tobacco mild green mosaic virus (TMGMV) mediated lethal hypersensitive response (HR) as a novel method of weed control (United States Patent 6,689,718)

Weed-resistant outboard motor drive system (United States Patent 6,669,516)

Weed cutter (United States Patent 6,665,941)

Weed-trimmer adapted with a screw or water wheel (United States Patent 6,616,489)

Weed trimmer to mower attachment kit (United States Patent 6,601,374)

Weed growth inhibitory compositions (United States Patent 6,514,913)

Weed and plant pests control apparatus and method (United States Patent 6,505,437)

Water jet propulsion unit having linear weed grate clean-out system (United States Patent 6,482,055)

Synergistic herbicidal agents based on leaf herbicides containing phosphorus, imidazolinones and hormone weed killers (United States Patent 6,436,874)

Biodegradable, weed-preventing sheet and a method of preventing generation and growth of weeds by use of the same (United States Patent 6,407,039)

Herbicidal synergistic composition and method of weed control (United States Patent 6,403,531)

Weed stick spray (United States Patent 6,367,714)

Weed hook (United States Patent 6,360,826)

Debris blowing weed trimmer (United States Patent 6,349,475)

Grass and weed cutter construction (United States Patent 6,327,782)

Weed trimmer guard (United States Patent 6,324,765)

Multi-purpose weed suppressant and plant growth enhancement device (United States Patent 6,311,911)

Weed control plate (United States Patent 6,276,869)

Artificial weed line (United States Patent 6,269,582)

Weed trimmer line rewinder device (United States Patent 6,254,029)

Method for producing combination fish hook and weed guard device (United States Patent 6,253,485)

Weed trimming device (United States Patent 6,240,714)

Tank mixtures and premixtures for weed control programs that include postmergence applications of glyphosate plus graminicides in glyphosate tolerant soybeans (United States Patent 6,239,072)

Method and device for weed control (United States Patent 6,237,278)

Weed-tree remover (United States Patent 6,213,527)

Gas appliance such as a thermal weed sprayer (United States Patent 6,190,161)

Noxious weed control by soil solarization (United States Patent 6,189,466)

Micro-sized weed and feed particles having enhanced properties (United States Patent 6,180,565)

Herbicidal synergistic composition and method of weed control (United States Patent 6,180,563)

Strains of drechslera monoceras and weed control compositions containing the same (United States Patent 6,172,003)

Herbicidal composition and method of weed control (United States Patent 6,159,899)

Weed trimmer shoulder strap assembly (United States Patent 6,158,636)

Disposable-herbicide applicator for weed-cutting blades (United States Patent 6,128,850)

Weed and grass trimmer attachment head (United States Patent 6,112,416)

Weed control block and weed control structure for block (United States Patent 6,099,942)

Pump jet apparatus with articulating weed grate clean-out system (United States Patent 6,083,063)

Weed trimmer wheeled transport assembly (United States Patent 6,065,275)

Herbicidal synergistic composition and method of weed control (United States Patent 6,063,732)

Valve cartridge having pressure sensor for agriculture and weed control (United States Patent 6,062,496)

Weed removal tool (United States Patent 6,056,068)

Wheeled support device for weed trimmers leaf blowers and the like (United States Patent 6,050,069)

Fish hook and weed guard device (United States Patent 6,032,402)

Portable steam weed killing apparatus (United States Patent 6,029,589)

Synergistic composition and process for selective weed control (United States Patent 6,017,851)

Herbicidal composition and method of weed control (United States Patent 6,017,850)

Weed extractor (United States Patent 6,016,876)

Rotary weed and line cutter (United States Patent 6,004,174)

Sclerotinia minor for broad spectrum broadleaf weed control (United States Patent 5,994,267)

Weed guard system (United States Patent 5,993,274)

Surface-layer structure of soil having weed emergence inhibitor activity and method of weed emergence inhibition (United States Patent 5,990,196)

Weed shielding spinner fishing lure (United States Patent 5,974,723)

Herbicidal composition and method of weed control (United States Patent 5,965,486)

Weed removal tool with ergonomic pressure handle grip (United States Patent 5,964,451)

Weed killing method and apparatus (United States Patent 5,946,851)

Compound and herbicidal composition for weed control (United States Patent 5,939,360)

Self-activating marine jet drive weed grate cleanout system (United States Patent 5,876,258)

Weed uprooter (United States Patent 5,857,529)

Synergistic composition and process for selective weed control (United States Patent 5,849,665)

Weed puller (United States Patent 7,117,954)

Weed pulling system (United States Patent 7,108,076)

Weed puller (United States Patent 7,100,899)

Aquatic weed suppressor (United States Patent 7,083,358)

Multipurpose, hand held, weed extracting, garden tool (United States Patent 7,083,001)

Selective weed discrimination (United States Patent 7,081,611)

Weed control process (United States Patent 7,071,147)

Weed extracting device (United States Patent 7,059,421)

Weed cutter mounting system (United States Patent 7,028,455)

Weed and grass trimmer (United States Patent 7,017,272)

Weed cutting golf club (United States Patent 6,988,954)

Weed plucker (United States Patent 6,959,768)

Weed extraction tool (United States Patent 6,951,255)

Weed removal device (United States Patent 6,938,937)

Weed deflector for an outboard motor water intake (United States Patent 6,935,908)

Method for producing transgenic plants resistant to weed control compounds which disrupt the porphyrin pathways of plants (United States Patent 6,906,245)

Weed trimmer safety guard (United States Patent 6,892,461)

Method of weed control (United States Patent 6,877,275)

Weed guard (United States Patent 6,837,487)

Weed puller (United States Patent 6,758,459)

Weed trimmer shield kit (United States Patent 6,757,980)

Natural herbicide for weed removal (United States Patent 6,756,341)

Shielding apparatus secured to landscaping material for shielding a plant from weed growth (United States Patent 6,754,989)

Weed, weed root and root vine removing, cultivating tool (United States Patent 6,736,217)

Non-invasive self-cleaning weed extractor tool (United States Patent 6,726,264)

Rotary hand-held tilling and weed removing device (United States Patent 6,722,444)

Adapter for a weed eater (United States Patent 6,722,040)

Weed cutter including multi-medium weed cutting head (United States Patent 6,715,270)

Weed-gripping pry tool (United States Patent 6,698,526)

Use of tobacco mild green mosaic virus (TMGMV) mediated lethal hypersensitive response (HR) as a novel method of weed control (United States Patent 6,689,718)

Weed-resistant outboard motor drive system (United States Patent 6,669,516)

Weed cutter (United States Patent 6,665,941)

Weed-trimmer adapted with a screw or water wheel (United States Patent 6,616,489)

Weed trimmer to mower attachment kit (United States Patent 6,601,374)

Weed growth inhibitory compositions (United States Patent 6,514,913)

Weed and plant pests control apparatus and method (United States Patent 6,505,437)

Water jet propulsion unit having linear weed grate clean-out system (United States Patent 6,482,055)

Synergistic herbicidal agents based on leaf herbicides containing phosphorus, imidazolinones and hormone weed killers (United States Patent 6,436,874)

Biodegradable, weed-preventing sheet and a method of preventing generation and growth of weeds by use of the same (United States Patent 6,407,039)

Herbicidal synergistic composition and method of weed control (United States Patent 6,403,531)

Weed stick spray (United States Patent 6,367,714)

Weed hook (United States Patent 6,360,826)

Debris blowing weed trimmer (United States Patent 6,349,475)

Grass and weed cutter construction (United States Patent 6,327,782)

Weed trimmer guard (United States Patent 6,324,765)

Multi-purpose weed suppressant and plant growth enhancement device (United States Patent 6,311,911)

Weed control plate (United States Patent 6,276,869)

Artificial weed line (United States Patent 6,269,582)

Weed trimmer line rewinder device (United States Patent 6,254,029)

Method for producing combination fish hook and weed guard device (United States Patent 6,253,485)

Weed trimming device (United States Patent 6,240,714)

Tank mixtures and premixtures for weed control programs that include postmergence applications of glyphosate plus graminicides in glyphosate tolerant soybeans (United States Patent 6,239,072)

Method and device for weed control (United States Patent 6,237,278)

Weed-tree remover (United States Patent 6,213,527)

Gas appliance such as a thermal weed sprayer (United States Patent 6,190,161)

Noxious weed control by soil solarization (United States Patent 6,189,466)

Micro-sized weed and feed particles having enhanced properties (United States Patent 6,180,565)

Herbicidal synergistic composition and method of weed control (United States Patent 6,180,563)

Strains of drechslera monoceras and weed control compositions containing the same (United States Patent 6,172,003)

Herbicidal composition and method of weed control (United States Patent 6,159,899)

Weed trimmer shoulder strap assembly (United States Patent 6,158,636)

Disposable-herbicide applicator for weed-cutting blades (United States Patent 6,128,850)

Weed and grass trimmer attachment head (United States Patent 6,112,416)

Weed control block and weed control structure for block (United States Patent 6,099,942)

Pump jet apparatus with articulating weed grate clean-out system (United States Patent 6,083,063)

Weed trimmer wheeled transport assembly (United States Patent 6,065,275)

Herbicidal synergistic composition and method of weed control (United States Patent 6,063,732)

Valve cartridge having pressure sensor for agriculture and weed control (United States Patent 6,062,496)

Weed removal tool (United States Patent 6,056,068)

Wheeled support device for weed trimmers leaf blowers and the like (United States Patent 6,050,069)

Fish hook and weed guard device (United States Patent 6,032,402)

Portable steam weed killing apparatus (United States Patent 6,029,589)

Synergistic composition and process for selective weed control (United States Patent 6,017,851)

Herbicidal composition and method of weed control (United States Patent 6,017,850)

Weed extractor (United States Patent 6,016,876)

Rotary weed and line cutter (United States Patent 6,004,174)

Sclerotinia minor for broad spectrum broadleaf weed control (United States Patent 5,994,267)

Weed guard system (United States Patent 5,993,274)

Surface-layer structure of soil having weed emergence inhibitor activity and method of weed emergence inhibition (United States Patent 5,990,196)

Weed shielding spinner fishing lure (United States Patent 5,974,723)

Herbicidal composition and method of weed control (United States Patent 5,965,486)

Weed removal tool with ergonomic pressure handle grip (United States Patent 5,964,451)

Weed killing method and apparatus (United States Patent 5,946,851)

Compound and herbicidal composition for weed control (United States Patent 5,939,360)

Self-activating marine jet drive weed grate cleanout system (United States Patent 5,876,258)

Weed uprooter (United States Patent 5,857,529)

Synergistic composition and process for selective weed control (United States Patent 5,849,665)

Weed puller (United States Patent 7,117,954)

Weed pulling system (United States Patent 7,108,076)

Weed puller (United States Patent 7,100,899)

Aquatic weed suppressor (United States Patent 7,083,358)

Multipurpose, hand held, weed extracting, garden tool (United States Patent 7,083,001)

Selective weed discrimination (United States Patent 7,081,611)

Weed control process (United States Patent 7,071,147)

Weed extracting device (United States Patent 7,059,421)

Weed cutter mounting system (United States Patent 7,028,455)

Weed and grass trimmer (United States Patent 7,017,272)

Weed cutting golf club (United States Patent 6,988,954)

Weed plucker (United States Patent 6,959,768)

Weed extraction tool (United States Patent 6,951,255)

Weed removal device (United States Patent 6,938,937)

Weed deflector for an outboard motor water intake (United States Patent 6,935,908)

Method for producing transgenic plants resistant to weed control compounds which disrupt the porphyrin pathways of plants (United States Patent 6,906,245)

Weed trimmer safety guard (United States Patent 6,892,461)

Method of weed control (United States Patent 6,877,275)

Weed guard (United States Patent 6,837,487)

Weed puller (United States Patent 6,758,459)

Weed trimmer shield kit (United States Patent 6,757,980)

Natural herbicide for weed removal (United States Patent 6,756,341)

Shielding apparatus secured to landscaping material for shielding a plant from weed growth (United States Patent 6,754,989)

Weed, weed root and root vine removing, cultivating tool (United States Patent 6,736,217)

Non-invasive self-cleaning weed extractor tool (United States Patent 6,726,264)

Rotary hand-held tilling and weed removing device (United States Patent 6,722,444)

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.