Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4639438 | O,S-dialkyl-O-(substituted phenyl)-thiolphosphates as pesticides | Richard Sehring, Wolfgang Buck, Sigmund Lust | 1987-01-27 |
| 4622340 | Urea derivatives and pesticidal compositions containing same | Heinz-Manfred Becher, Walter Wirtz | 1986-11-11 |
| 4457943 | N-(2H-Difluoro-3,5-dichloro-phenyl)-N'-(2,6-difluorobenzoyl) urea derivative and pesticidal compositions containing same | Heinz-Manfred Becher, Walter Wirtz | 1984-07-03 |
| 4275077 | Insecticidal acyl urea derivatives | Heinz-Manfred Becher, Richard Sehring, Walter Wirtz | 1981-06-23 |