Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7864148 | Bistable nematic liquid crystal display device and method for controlling such a device | Philippe Martinot-Lagarde, Jacques Angele, Francois Leblanc | 2011-01-04 |
| 7088413 | Bistable nematic liquid crystal display device with improved optical mask, having textures differing by about 180° twist, and off state in the liquid crystal covering the inter-electrode spaces | Philippe Martinot-Lagarde, Jacques Angele, Bertrand Pecout, Ivan Dozov | 2006-08-08 |
| 6959124 | Liquid crystal-based electro-optical device forming, in particular, a switch | Jean-Francois Legay, Olivier Duhem, Philippe Martinot-Lagarde | 2005-10-25 |
| 4790566 | Identity document difficult to falsify and a process for manufacturing such a document | Alain Glatigny | 1988-12-13 |
| 4225232 | Photometric cell | Gilbert Boisde | 1980-09-30 |
| 4188126 | Photometer with concave mirrors and field optics | Gilbert Boisde | 1980-02-12 |