Wallace C. Petersen
13Patents
5h-index
10Co-inventors
59Inventor score
Filing activity: Dec 4, 1980 → Oct 24, 1996
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4370480A | Herbicidal ureas and isoureas | Chemistry; Metallurgy | 31 | Expired |
| US4332611A | Herbicidal sulfonamides | Chemistry; Metallurgy | 17 | Expired |
| US6060432A | Herbicidal sulfonamides | Chemistry; Metallurgy | 9 | Expired |
| US4492599A | Herbicidal s-triazines | Chemistry; Metallurgy | 6 | Expired |
| US4675045A | Herbicidal sulfonamides | Chemistry; Metallurgy | 5 | Expired |
| US4491467A | Herbicidal sulfonamides | Chemistry; Metallurgy | 5 | Expired |
| US4585470A | Herbicidal azobenzenesulfonamides | Chemistry; Metallurgy | 5 | Expired |
| US4678497A | Triazine-substituted herbicidal azobenzenesulfonamides | Chemistry; Metallurgy | 4 | Expired |
| US4555261A | Herbicidal sulfonamides | Chemistry; Metallurgy | 3 | Expired |
| US4789465A | Herbicidal pyridine N-oxide sulfonylureas | Human Necessities | 3 | Expired |
| US4743295A | Herbicidal sulfonamides | Chemistry; Metallurgy | 2 | Expired |
| US4394314A | Process of preparing aromatic aldehydes by reacting selected aromatic compounds with formamidine acetate and an organic acid anhydride | Chemistry; Metallurgy | 1 | Expired |
| US4900353A | Herbicidal pyridine N-oxide sulfonylureas | Human Necessities | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.