Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4863975 | Oxynitrate additive for polyurethane foams | Thomas M. Knobel | 1989-09-05 |
| 4826883 | Oxynitrate additive for polyurethane foams | Thomas M. Knobel | 1989-05-02 |
| 4814358 | Oxynitrate additive for polyurethane foams | Thomas M. Knobel | 1989-03-21 |