Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4695632 | Quaternary reactive compounds | Walter Kalk, Karl H. Schundehutte | 1987-09-22 |
| 4443369 | Sulphur dyestuffs | Helmut Seidler, Klaus Wunderlich | 1984-04-17 |
| 4362874 | Quaternary reactive compounds | Walter Kalk, Karl H. Schundehutte | 1982-12-07 |
| 4281124 | Reactive quaternary compounds, their preparation and their use for increasing the affinity of anionic dyestuffs for fibres which contain nitrogen or hydroxyl groups | Bernd Berger-Lohr, Karl H. Schundehutte | 1981-07-28 |