Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4871579 | Process and device for spraying a reaction mixture capable of forming a transparent protective layer of high optical quality | Francois Toytot, Gerd Leyens, Siegfried Pikhardt, Herbert Bayer | 1989-10-03 |
| 4830806 | Method and device for the manufacture of a high optical quality transparent sheet or plastic | Gerard Daude, Michel Moncheaux, Sylvie Drujon, Gerard Dimier | 1989-05-16 |
| 4818622 | Process and device for the production of a safety pane | Francois de Toytot | 1989-04-04 |