Issued Patents 1997
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5680497 | Optical waveguide device | Minoru Seino, Tadao Nakazawa, Yoshinobu Kubota, Masaharu Doi, Kunio Sugeta +1 more | 1997-10-21 |
| 5666449 | Optical waveguide device | Shinya Sawae, Sadayuki Miyata | 1997-09-09 |
| 5612086 | Method of manufacturing an optical waveguide device | Hironao Hakogi, Junko Watanabe | 1997-03-18 |
| 5598490 | Dielectric optical waveguide device | Hironao Hakogi | 1997-01-28 |