Helmuth Hack
10Patents
4h-index
13Co-inventors
53Inventor score
Filing activity: Apr 12, 1967 → Aug 1, 1977
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US3961936A | Herbicidal agents | Chemistry; Metallurgy | 16 | Expired |
| US4036632A | Herbicidal agents | Chemistry; Metallurgy | 11 | Expired |
| US3966715A | Herbicidal agents | Human Necessities | 7 | Expired |
| US4128412A | Herbicidal composition and method using N-(2-ethylsulfonyl-1,3,4-thiadiazol-5-yl)-N-methyl-N'-methyl urea | Chemistry; Metallurgy | 5 | Expired |
| US4639526A | N-substituted 5-amino-1,3,4-thiadiazoles | Human Necessities | 3 | Expired |
| US3984468A | Herbicidal N-trifluoromethylmercaptophenyl ureas | Chemistry; Metallurgy | 3 | Expired |
| US4049670A | N-(2-Ethylsulfonyl-1,3,4-thiadiazol-5-yl)-N-methyl-N'-methylurea | Chemistry; Metallurgy | 1 | Expired |
| US3948631A | Phosphoro-amido-thioates | Chemistry; Metallurgy | 0 | Expired |
| US3933463A | Herbicidally active imidazolidin-2-on-1-carboxylic acid amides | Chemistry; Metallurgy | 0 | Expired |
| US4004913A | Selective herbicidal compositions | Chemistry; Metallurgy | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.