Robert A. Sewell
8Patents
5h-index
8Co-inventors
52Inventor score
Filing activity: Mar 25, 1976 → Dec 27, 1993
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5114989A | Isocyanate-terminated prepolymer and polyurethane foam prepared therefrom | Chemistry; Metallurgy | 35 | Expired |
| US4800195A | Substituted azo N-phenyl-N'benzoylureas and their use as insecticides and acaricides | Human Necessities | 14 | Expired |
| US5374705A | Process for the preparation of polyether polyols with a reduced unsaturation content | Chemistry; Metallurgy | 10 | Expired |
| US4529819A | Method for making benzoylphenylureas | Chemistry; Metallurgy | 9 | Expired |
| US5089534A | Process for preparing flexible polyurethane foam | Chemistry; Metallurgy | 6 | Expired |
| US4018487A | Cam adjustment for tension spring of sewing machine head lifter mechanism | Human Necessities | 5 | Expired |
| US4342770A | Optically active isomers of substituted pyridine methyl esters of cyclopropane carboxylic acid and their use as insecticides | Chemistry; Metallurgy | 1 | Expired |
| US4795746A | Substituted N-phenyl-N'benzoyl ureas and their use as insecticides and acaricides | Human Necessities | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.