Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4462864 | Process for the delignification of unbleached chemical pulp | Henri Lemoyne | 1984-07-31 |
| 4274912 | Process for bleaching preoxidized paper pulp | Michel Durand | 1981-06-23 |