James E. Powell
41Patents
7h-index
17Co-inventors
66Inventor score
Filing activity: Nov 1, 1974 → Aug 22, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4670041A | Oxabicycloalkane herbicides | Chemistry; Metallurgy | 28 | Expired |
| US3993648A | Tetrahydro-2-(nitromethylene)-2H-1,3-thiazines | Chemistry; Metallurgy | 18 | Expired |
| US3962225A | Nitro(tetrahydro-2H-1,3-thiazin-2-ylidene)methyl aldehydes and ketones | Human Necessities | 12 | Expired |
| US4542244A | Oxabicycloalkane herbicides | Chemistry; Metallurgy | 12 | Expired |
| US3933809A | 2-(Dihalonitromethyl)-5,6-dihydro-4H-1,3-thiazines | Chemistry; Metallurgy | 9 | Expired |
| US4052388A | 3-Acetyltetrahydro-2-(nitromethylene)-2H-1,3-thiazine | Chemistry; Metallurgy | 8 | Expired |
| US4984536A | Fish feeding apparatus | Emerging Cross-Sectional Technologies | 8 | Expired |
| US4022775A | 3-Oxomethyl-2-(1-nitro-2-oxoethylidene)-tetrahydro-2H-1,3-thiazines | Chemistry; Metallurgy | 7 | Expired |
| US3985735A | Pyrimido(4,3-b)(1,3)thiazin-6-ones | Chemistry; Metallurgy | 7 | Expired |
| US4525203A | ((3,4,5,6-Tetrahydro-2H-pyran-2-yl)methoxy)oxabicycloalkane herbicides | Human Necessities | 6 | Expired |
| US4015001A | Control of insects by nitro(tetrahydro-2H-1,3-thiazin-2-ylidene)methyl aldehydes and ketones | Human Necessities | 6 | Expired |
| US4031087A | 3,4,7,8-Tetrahydro-9-nitro-7-substituted-2H,6H-pyrimido- (4,3-b)(1,3)thiazines | Chemistry; Metallurgy | 6 | Expired |
| US4828603A | Herbicidal oxatricyclo-nonane ethers | Emerging Cross-Sectional Technologies | 5 | Expired |
| US3985736A | N-(sulfur-substituted)-2H-1,3-thiazin-2-ylidene nitromethyl ketones and nitroacetic acid esters | Chemistry; Metallurgy | 4 | Expired |
| US4606753A | 4-substituted-2-oxabicyclo[2.2.1]heptane ether herbicides | Human Necessities | 4 | Expired |
| US4567283A | Intermediates for oxabicycloalkane herbicides | Chemistry; Metallurgy | 4 | Expired |
| US4486219A | 6-Oxabicyclo[3.2.1]octane derivatives and compositions and methods for controlling plant growth | Human Necessities | 4 | Expired |
| US4033955A | 3,4-Dihydro-8-nitro-2H-pyrrolo(2,1-B)(1,3)thiazin-7(6H)-one | Chemistry; Metallurgy | 4 | Expired |
| US4410354A | Spiro ether herbicides | Chemistry; Metallurgy | 4 | Expired |
| US5125954A | Herbicidal oxabicycloalkane ethers | Human Necessities | 3 | Expired |
| US4065560A | Tetrahydro-2-(nitromethylene)-2H-1,3-thiazine insect control agents | Chemistry; Metallurgy | 3 | Expired |
| US4388104A | 3-Phenylmethoxytetrahydropyran herbicides | Chemistry; Metallurgy | 3 | Expired |
| US4034091A | N-(Arylsulfonyl)-2-nitro-2-(tetrahydro-2H-1,3-thiazin-2 -ylidene)acetamides | Chemistry; Metallurgy | 3 | Expired |
| US4061749A | 5,6-Dihydro-4H-1,3-thiazine-2-carboxaldehyde oxime useful as insecticides | Human Necessities | 2 | Expired |
| US4006156A | 3-Alkyl-2-(nitromethylene) thiazolidine | Chemistry; Metallurgy | 2 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.