Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5296303 | Process and device for producing a plastic layer of high optical quality | Jean-Louis Bravet, Francois de Toytot, Siegfried Pikhardt, Herbert Bayer | 1994-03-22 |
| 5118453 | Process for production of a continuous plastic sheet by casting in the liquid state on a mobile support comprising juxtaposed glass plates | Siegfried Pikhard, Norbert Bartonitschek, Daniel Martin, Renee G. Poix | 1992-06-02 |
| 5076775 | Device for production of a continuous plastic sheet by casting in the liquid state on a mobile support comprising juxtaposed glass plates | Siegfried Pikhard, Norbert Bartonitschek, Daniel Martin, Rene Poix | 1991-12-31 |
| 4871579 | Process and device for spraying a reaction mixture capable of forming a transparent protective layer of high optical quality | Jean-Louis Bravet, Francois Toytot, Siegfried Pikhardt, Herbert Bayer | 1989-10-03 |
| 4783344 | Process and device for spraying a reaction mixture capable of forming a transparent protective layer of high optical quality | Jean-Louis Bravet, Francois Toytot, Siegfried Pikhardt, Herbert Bayer | 1988-11-08 |
| 4749586 | Process and device for producing a plastic layer of high optical quality | Jean-Louis Bravet, Francois de Toytot, Siegfried Pikhardt, Herbert Bayer | 1988-06-07 |