Issued Patents All Time
Showing 26–37 of 37 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7233716 | Optical switch | — | 2007-06-19 |
| 7031565 | Photonic switch | Tsuyoshi Yamamoto | 2006-04-18 |
| 6925222 | Photonic switch | Tsuyoshi Yamamoto | 2005-08-02 |
| 6901222 | Optical transmission system and terminal device applicable to the system | Shinji Yamashita, Kazuyuki Mori | 2005-05-31 |
| 6771426 | Input-output optical system of spatially optical coupled type, and optical switch | Tsuyoshi Yamamoto, Shinichi Takeuchi | 2004-08-03 |
| 6671074 | Optical receiver for burst transmission system | — | 2003-12-30 |
| 6429976 | Optical switch using tilt mirrors | Tsuyoshi Yamamoto, Kazuyuki Mori, Yuji Tochio, Kazuhiro Tanaka | 2002-08-06 |
| 6178212 | Retiming circuit and method for performing retiming | — | 2001-01-23 |
| 5619601 | Optical switch and optical distributor using polarization control and partial reflection | Tsuyoshi Yamamoto, Takakiyo Nakagami | 1997-04-08 |
| 4695321 | Dynamic compaction of composite materials containing diamond | Akira Sawaoka | 1987-09-22 |
| 4566905 | High density boron nitride-containing sintered body for cutting tool and a method of producing the same | Masatada Araki | 1986-01-28 |
| 4394170 | Composite sintered compact containing high density boron nitride and a method of producing the same | Akira Sawaoka, Masatada Araki, Shinroku Saito | 1983-07-19 |