Hanspeter Fischer
29Patents
7h-index
35Co-inventors
69Inventor score
Filing activity: Nov 12, 1973 → Jan 28, 2020
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4963574A | N-cyanoisothiourea compounds useful in pest control | Chemistry; Metallurgy | 27 | Expired |
| US4092146A | Compositions, methods and new compounds for influencing plant growth | Chemistry; Metallurgy | 21 | Expired |
| US3948914A | 5-Nitropyrimidine derivatives | Chemistry; Metallurgy | 14 | Expired |
| US4777177A | Pesticidal thioxanthen-9-ylidenepiperidines | Human Necessities | 12 | Expired |
| US4045459A | Agent for the regulation of plant growth | Chemistry; Metallurgy | 8 | Expired |
| US4414158A | Phosphonomethylglycylhydroxamic acid and novel herbicidally active salts thereof | Human Necessities | 8 | Expired |
| US4014677A | 5-Nitropyrimidine derivatives and their use in agents for influencing plant growth | Chemistry; Metallurgy | 7 | Expired |
| US4188341A | Process for the production of (substituted) 2,6-dimethylanilines | Chemistry; Metallurgy | 7 | Expired |
| US4207091A | Method of preventing plants from damage by frost | Human Necessities | 6 | Expired |
| US4770689A | Herbicidal imidazole-5-carboxylic acid derivatives | Chemistry; Metallurgy | 4 | Expired |
| US4053497A | Agent for the regulation of plant growth | Chemistry; Metallurgy | 4 | Expired |
| US3971647A | Composition for the regulation of plant growth | Chemistry; Metallurgy | 3 | Expired |
| US4508731A | Microbicidal N-(tetrahydro-2-on-fur-3-yl)-N-substituted acetyl-anilines and -naphthylamines | Chemistry; Metallurgy | 3 | Expired |
| US4335118A | Insecticidal .alpha.-cyano-3-phenoxy-benzyl-2-(4-azidophenyl)-3-methylbutyrates | Chemistry; Metallurgy | 3 | Expired |
| US4053496A | Products from the hydrolysis of .beta.-halogenoethyl-silanes and their use as agents for the regulation of plant growth | Chemistry; Metallurgy | 3 | Expired |
| US5116872A | Microbicidal compositions | Chemistry; Metallurgy | 2 | Expired |
| US3986863A | Amine fruit abscission agents | Human Necessities | 1 | Expired |
| US4105685A | Agent for the regulation of plant growth | Chemistry; Metallurgy | 1 | Expired |
| US4629490A | Phosphonomethylcylhydroxamic acid and herbicidally active salts thereof, and their use in herbicidal compositions | Human Necessities | 1 | Expired |
| US3992398A | Process for the production of 1,2,4-triazole derivatives | Chemistry; Metallurgy | 1 | Expired |
| US4927449A | Tricyclic 1H-imidazole-5-carboxylic acid derivatives as herbicides | Chemistry; Metallurgy | 1 | Expired |
| US4448773A | Microbicidal N-alkoxycarbonyl-alkyl-N-substituted acetyl-anilines and -naphthylamines | Chemistry; Metallurgy | 1 | Expired |
| US3969101A | Agent for controlling plant growth | Human Necessities | 1 | Expired |
| US4055411A | Agents for inhibiting plant growth | Human Necessities | 1 | Expired |
| US7787329B2 | Bore-box locating system | Physics | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.