Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7889331 | Bidirectional optical module and optical time domain reflectometer equipped with the bidirectional optical module | Keisuke Asami, Haruo Shibuya, Yasuhiko Muramatsu, Shunji Sakai | 2011-02-15 |
| 7853104 | Bidirectional optical module and optical time domain reflectometer | Haruo Shibuya, Yasuaki Tamura, Shunji Sakai | 2010-12-14 |