Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4880469 | Process for the preparation of a shapeable solution of cellulose in the presence of a tertiary amine oxide and an additive | Michel Paillet | 1989-11-14 |
| 4851522 | Process for the preparation of solutions of a ligno-cellulosic material and solutions obtained | Michel Paillet, Alain Peguy | 1989-07-25 |