Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4834837 | Method for delignification of cellulose with oxygen | Heinz Loquenz, Siegfried Meissl, Helmut Schweiger, Norbert Meindl, Karl Schwarzl | 1989-05-30 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4834837 | Method for delignification of cellulose with oxygen | Heinz Loquenz, Siegfried Meissl, Helmut Schweiger, Norbert Meindl, Karl Schwarzl | 1989-05-30 |