Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5129987 | Process for bleaching mechanical wood pulp with sodium hydrosulfite and sodium hydroxide in a refiner | Thomas Joachimides, Stephen H. Levis, Bert A. Edstrom | 1992-07-14 |