Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8519378 | Semiconductor light-emitting element array including a semiconductor rod | Shinjiro Hara, Junichi Motohisa, Takashi Fukui | 2013-08-27 |
| 6356572 | Semiconductor light emitting device | Toshiaki Tanaka, Hiroshi Hamada | 2002-03-12 |
| 5701019 | Semiconductor device having first and second stacked semiconductor layers, with electrical contact to the first semiconductor layer | Hidetoshi Matsumoto, Masamitsu Yazawa | 1997-12-23 |
| 5381027 | Semiconductor device having a heterojunction and a two dimensional gas as an active layer | Toshiyuki Usagawa, Masahiko Kawata, Shigeo Goto, Katsuhiko Mitani, Masao Yamane +3 more | 1995-01-10 |
| 5362972 | Semiconductor device using whiskers | Masamitsu Yazawa, Toshio Katsuyama, Nobutaka Futigami, Hidetoshi Matsumoto, Hiroshi Kakibayashi +3 more | 1994-11-08 |
| 5351128 | Semiconductor device having reduced contact resistance between a channel or base layer and a contact layer | Shigeo Goto, Hidetoshi Matsumoto, Masamitsu Yazawa, Yasunari Umemoto, Yoko Uchida | 1994-09-27 |
| 5332910 | Semiconductor optical device with nanowhiskers | Keiichi Haraguchi, Kensuke Ogawa, Toshio Katsuyama, Ken Yamaguchi, Toshiyuki Usagawa +4 more | 1994-07-26 |
| 5258631 | Semiconductor device having a two-dimensional electron gas as an active layer | Toshiyuki Usagawa, Masahiko Kawata, Shigeo Goto, Katsuhiko Mitani, Masao Yamane +3 more | 1993-11-02 |
| 5025751 | Solid film growth apparatus | Shinichiro Takatani, Shigeo Goto, Masahiko Kawata | 1991-06-25 |
| 4933728 | Semiconductor optical device | Tadashi Fukuzawa, Eizaburo Yamada, Hiroyoshi Matsumura | 1990-06-12 |
| 4847573 | Optical modulator | Tadashi Fukuzawa, Eizaburo Yamada, Hiroyoshi Matsumura | 1989-07-11 |
| 4835583 | Semiconductor device having strained superlattice buffer layers with In-doped GaAs substrate | Makoto Morioka, Tomoyoshi Mishima, Yoshifumi Katayama, Yasuhiro Shiraki | 1989-05-30 |
| 4784451 | Waveguide optical switches | Hitoshi Nakamura, Tadashi Fukuzawa, Koji Ishida, Hiroyoshi Matumura, Hiroaki Inoue | 1988-11-15 |
| 4775980 | Distributed-feedback semiconductor laser device | Naoki Chinone, Shinji Tsuji, Yoshihisa Fujisaki, Yasutoshi Kashiwada, Motohisa Hirao +4 more | 1988-10-04 |
| 4766092 | Method of growing heteroepitaxial InP on Si using Sn substrate implantation | Takao Kuroda, Hiroyoshi Matsumura | 1988-08-23 |
| 4737015 | Optical waveguide having a silicon oxi-nitride layer | Koji Ishida, Hiroyoshi Matsumura, Kazuyuki Nagatsuma, Akihito Hongo | 1988-04-12 |
| 4720836 | Distributed feedback semiconductor laser | Tadashi Fukuzawa, Hiroyoshi Matsumura, Shinji Tsuji, Hitoshi Nakamura | 1988-01-19 |