Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6662749 | Clumping cellulosic animal litter | Robert V. Wiedenhaft | 2003-12-16 |
| 5770138 | Method of making enhanced non-clay granules made from pulp or paper sludge | — | 1998-06-23 |