Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4411887 | Use of alkylene oxide copolymers as emollients in cosmetic preparations | Karl Seibert, Gunter Poppel | 1983-10-25 |
| 4316031 | Process for the preparation of 2-mercaptobenzothiazole | Manfred Bergfeld, Hans Zengel | 1982-02-16 |
| 4230612 | Polyether lubricants for use in the processing of plastics | Karl Seibert, Werner Holtvoigt | 1980-10-28 |