Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4854934 | Substituted ureas for ennobling cellulose fibres | Didier Wilhelm, Antonio Gelabert | 1989-08-08 |
| 4835320 | Process for the preparation of glyoxal monoactals | Farid Hamedi-Sangsari, Francine J. Chastrette | 1989-05-30 |