Inventor · Kelkheim, DE

Herbert Stark

12Patents
6h-index
39Co-inventors
66Inventor score

Filing activity: Feb 10, 1978 → Jul 29, 1999

Most-cited inventions

PatentTitleAreaCited byStatus
US5925644A Substituted nitrogen heterocycles, processes for their preparation and their use as pesticides Human Necessities 42 Expired
US4469760A Redox battery including a bromine positive electrode and a chromium ion negative electrode, and method Emerging Cross-Sectional Technologies 23 Expired
US5767309A Processes for preparing L!- or D!-homoalanin-4-yl-(methyl)phosphinic acid and salts thereof by racemate resolution Chemistry; Metallurgy 14 Expired
US5441922A Combinations of benzoyl cyclohexanedione herbicides and crop-protecting substances Human Necessities 9 Expired
US6265398A Substituted pyridines/pyrimidines, their preparation and their use as pesticides Chemistry; Metallurgy 9 Expired
US4529691A Color photographic recording material containing color couplers Physics 9 Expired
US5869668A Processes for preparing L!- or D!-homoalanin-4-yl-(methyl) phosphinic acid and salts thereof by racemate resolution Chemistry; Metallurgy 5 Expired
US5306695A Haloalkoxy-substituted benzoylcyclohexanediones as herbicides and plant growth regulators Chemistry; Metallurgy 5 Expired
US5128361A Imidazoline derivatives for systemic combating of ectoparasites in host animals Chemistry; Metallurgy 3 Expired
US4204867A Process for the production of color photographic images using new white coupler substances Physics 3 Expired
US5854288A Use of benzoylureas for controlling house dust mites Human Necessities 2 Expired
US6197729A Substituted cyclohexylaminopyrimidines Chemistry; Metallurgy 0 Expired

Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.