Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5613023 | Method of modifying the longitudinal distribution of the pitch of a diffraction grating, and a method of making such a grating in an optical waveguide | Jean-Louis Guillon, Isabelle Riant, Pierre Sansonetti | 1997-03-18 |