Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5973808 | Optical fiber amplifier | Tokushi Sekimura | 1999-10-26 |
| 5301252 | Mode field conversion fiber component | Hisaharu Yanagawa | 1994-04-05 |
| 4958897 | Thin film optical component for use in optical transmission lines and method of manufacturing the same | Hisaharu Yanagawa, Toshihiro Ochiai, Hidehisa Miyazawa | 1990-09-25 |
| 4900118 | Multiple-fiber optical component and method for manufacturing of the same | Hisaharu Yanagawa, Mikio Ogai, Toshihiro Ochiai, Hidehisa Miyazawa | 1990-02-13 |