Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4880837 | N-benzoyl-n'-(2,3-dichloro-4-phenoxy)-phenylureas | Peter Hofmeister, Christoph Kuenast | 1989-11-14 |
| 4855140 | O-(O-ethyl-S-alkylphosphoryl)-O-(carbamyl)-pyrocatechol derivatives | Linhard Sproesser, Siegfried Kersten, Peter Hofmeister, Christoph Kuenast | 1989-08-08 |