Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11340553 | Process cartridge and electrophotographic apparatus | Kaname Watariguchi, Kohei Makisumi, Fumiyuki Hiyama, Yuichi Kikuchi, Kazuhiro Yamauchi +1 more | 2022-05-24 |
| 8334497 | Image sensor comprising a waveguide structure and imaging apparatus | Yousuke Takubo | 2012-12-18 |
| 6288410 | Semiconductor optical device with tensile-strained quantum well structure | — | 2001-09-11 |
| 5946336 | Optical semiconductor apparatus, fabrication method thereof, modulation method therefor, light source apparatus and optical communication system or method using the same | Natsuhiko Mizutani | 1999-08-31 |
| 5881086 | Optical semiconductor device with quantum wires, fabrication method thereof, and light source apparatus, and optical communication system using the same | — | 1999-03-09 |
| 5663592 | Semiconductor device having diffraction grating | Mitsuru Ohtsuka, Natsuhiko Mizutani | 1997-09-02 |
| 5585306 | Methods for producing compound semiconductor devices | — | 1996-12-17 |
| 5571748 | Methods for producing compound semiconductor devices | Natsuhiko Mizutani | 1996-11-05 |
| 5115443 | Semiconductor laser apparatus | — | 1992-05-19 |
| 4971415 | Multibeam emitting device | Toshitami Hara, Akira Shimizu, Yoshinobu Sekiguchi, Hidetoshi Nojiri, Isao Hakamada | 1990-11-20 |
| 4932033 | Semiconductor laser having a lateral p-n junction utilizing inclined surface and method of manufacturing same | Mitsuru Ohtsuka | 1990-06-05 |
| 4829534 | Semiconductor laser device having a semiconductor region for creating a depletion layer in a laser active layer for controlling current flow therethrough | Hidetoshi Nojiri, Toshitami Hara, Akira Shimizu, Yoshinobu Sekiguchi, Isao Hakamada | 1989-05-09 |
| 4799229 | Semiconductor laser array | Toshitami Hara, Hidetoshi Nojiri, Yoshinobu Sekiguchi, Mitsutoshi Hasegawa, Sotomitsu Ikeda | 1989-01-17 |
| 4796067 | Semiconductor device having a superlattice structure | Akira Shimizu, Toshitami Hara, Hidetoshi Nojiri, Isao Hakamada, Yoshinobu Sekiguchi | 1989-01-03 |
| 4794609 | Semiconductor laser provided with a plurality of lasers in the form of an array | Toshitami Hara, Hidetoshi Nojiri, Akira Shimizu, Yoshinobu Sekiguchi, Isao Hakamada | 1988-12-27 |
| 4794611 | Semiconductor laser having superlattice structure | Toshitami Hara, Yoshinobu Sekiguchi, Hidetoshi Nojiri, Akira Shimizu, Isao Hakamada | 1988-12-27 |
| 4706254 | Semiconductor device and its fabrication | Hidetoshi Nojiri, Isao Hakamada, Yoshioki Hajimoto | 1987-11-10 |