Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4883021 | Absorbent composition | Cyril L. Ducharme, David A. Heider, Denny W. Neiberger, Fred Maass | 1989-11-28 |
| 4881490 | Absorbent composition, and method of making same | Cyril L. Ducharme, David A. Heider, Denny W. Neiberger, Fred Maass | 1989-11-21 |
| 4844010 | Absorbent composition, method of making and using same | Cyril L. Ducharme, David A. Heider, Denny W. Neiberger, Fred Maass | 1989-07-04 |