Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6157455 | Method and apparatus for determining the calorific value of a natural gas optically and in real time | Jean-Jacques Pinvidic, Laurence Juen-Grenier | 2000-12-05 |
| 5306913 | Method and apparatus for remote optical detection of a gas present in an observed volume | Jean-Claude Noack, Yves Guern | 1994-04-26 |
| 5305243 | Method and device for comparing two variable analogue signals | Michel Ayraud, Mario D'Amico | 1994-04-19 |
| 5229601 | Method and apparatus for surveillance of a determined space such as a portion of premises, an area of ground, or an industrial installation, for example | Yves Guern | 1993-07-20 |