Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4841049 | Reactive dyes of the dioxazine series | — | 1989-06-20 |
| 4819849 | Tractor with locking action | — | 1989-04-11 |
| 4801694 | Triazinyl reactive dyestuffs in which triazinyl group is further substituted with a beta-chloroethylsulfonyl- or vinylsulfonylbutyrylamino moiety | Peter Scheibli, Herbert Seiler, Athanassios Tzikas | 1989-01-31 |