Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4246670 | Process for improving the color yield and fastness properties of dyeings produced with anionic dyes on cellulose fibre material and cationic fibre-reactive compounds | Pierre Perrin, Gert Hegar, Herbert Seiler, Ulrich Horn | 1981-01-27 |