Issued Patents All Time
Showing 1–25 of 25 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9182617 | Driver circuit configured with travelling wave amplifier | Taizo TATSUMI | 2015-11-10 |
| 8987650 | Front end module for optical receiver | Makoto Ito | 2015-03-24 |
| 8907722 | Traveling wave amplifier with suppressed jitter | Taizo TATSUMI, Keiji Tanaka | 2014-12-09 |
| 8816772 | Differential amplifier with function of variable gain and optical receiver implemented with the same | Yoshiyuki Sugimoto, Taizo TATSUMI | 2014-08-26 |
| 8704592 | Traveling wave amplifier with pre-emphasis function | Taizou Tatsumi, Keiji Tanaka | 2014-04-22 |
| 8390383 | Amplifier for receiving intermittent optical signal | Hiroshi Hara | 2013-03-05 |
| 8362841 | Conversion circuit from single phase signal to differential phase signal | Makoto Ito | 2013-01-29 |
| 7755434 | Electronic circuit | Hiroshi Hara | 2010-07-13 |
| 7585120 | Optical device and method of manufacturing the same, optical device adaptor, and optical component stopper | Makoto Ito | 2009-09-08 |
| 7579915 | Electronic circuit | Taizou Tatsumi | 2009-08-25 |
| 6567441 | Source follower circuit, laser driving apparatus, semiconductor laser apparatus, current-voltage convertion circuit, and light receiving circuit | Seigo Furudate, Eiji Tsumura, Hiroshi Hara | 2003-05-20 |
| 6257773 | Optical module and optical reflecting member | Yutaka Moriyama | 2001-07-10 |
| 6213650 | Method of making optical module | Yutaka Moriyama, Seiji Kumagai | 2001-04-10 |
| 6004046 | Optical module and method of making the same | — | 1999-12-21 |
| 5880582 | Current mirror circuit and reference voltage generating and light emitting element driving circuits using the same | — | 1999-03-09 |
| D396210 | Optical receiver/transmitter module | Nobuo Shiga, Takeshi Sekiguchi, Daisuke Takagi | 1998-07-21 |
| 5742480 | Optical module circuit board having flexible structure | Ryoji Sakamoto, Hiromi Kurashima, Daisuke Takagi, Satoshi Ohe, Takeshi Sekiguchi +1 more | 1998-04-21 |
| 5712504 | Pin type light-receiving device, opto electronic conversion circuit, and opto-electronic conversion module | Hiroshi Yano, Kentaro Doguchi, Takeshi Sekiguchi | 1998-01-27 |
| 5652425 | Photoelectric conversion module with noise compensation | Takeshi Sekiguchi, Nobuo Shiga | 1997-07-29 |
| 5596665 | Optical module having structure for defining fixing position of sleeve | Hiromi Kurashima, Hisato Takahashi, Ken-ichi Kitayama, Ryoji Sakamoto, Takeshi Sekiguchi +2 more | 1997-01-21 |
| 5546489 | Optical link apparatus | Goro Sasaki, Hiroshi Yano, Kentaro Doguchi | 1996-08-13 |
| 5528329 | Photographic film processing apparatus | Ryosaku Sawada, Kensaku Sawada, Kosaku Sawada, Mikio Matsui | 1996-06-18 |
| 5489798 | Opto-electronic integrated circuit | Kentaro Doguchi, Goro Sasaki, Hiroshi Yano | 1996-02-06 |
| 5475256 | Opto-electronic integrated circuit | Goro Sasaki, Hiroshi Yano | 1995-12-12 |
| 5426480 | Photographic film processing apparatus | Ryosaku Sawada, Kensaku Sawada, Kosaku Sawada, Mikio Matsui | 1995-06-20 |