Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4826567 | Process for the delignification of cellulosic substances by pretreating with a complexing agent followed by hydrogen peroxide | — | 1989-05-02 |
| 4826568 | Process for delignification of cellulosic substances by pretreating with a complexing agent followed by peroxide prior to kraft digestion | — | 1989-05-02 |