Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4880433 | Process for aftertreating cellulosic materials printed with reactive dyes | Raymond Defago | 1989-11-14 |
| 4828572 | Process for dyeing or printing textile fibre materials in stable black shades using metal complex reactive dyes with a red shift and a yellow or green shift | Rainer Begrich | 1989-05-09 |