Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4888159 | Process for the preparation of silicon oxynitride-containing products | — | 1989-12-19 |
| 4826887 | Process for the preparation of polycarbonates | Jan Kuyper, George A. Pogany | 1989-05-02 |
| 4826952 | Process for the preparation of polycarbonates from epoxy compound and carbon dioxide | Jan Kuyper, George A. Pogany | 1989-05-02 |
| 4826953 | Process for the preparation of polycarbonates from epoxy compound and carbon dioxide | Jan Kuyper, George A. Pogany | 1989-05-02 |