Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5796883 | Optical integrated circuit and method for fabricating the same | Kiichi Hamamoto, Tatsuya Sasaki, Takeshi Takeuchi, Masako Hayashi, Keiro Komatsu +1 more | 1998-08-18 |
| 5358896 | Method of producing optical integrated circuit | Keiro Komatsu, Tatsuya Sasaki, Tomoaki Kato | 1994-10-25 |
| 5325382 | Method and electrode arrangement for inducing flat frequency modulation response in semiconductor laser | Katsumi Emura, Yoshihiko Suemura | 1994-06-28 |
| 5250462 | Method for fabricating an optical semiconductor device | Tatsuya Sasaki, Tomoaki Katoh | 1993-10-05 |
| 4947458 | Optical transmitter utilizing a bistable distributed feedback semiconductor laser | — | 1990-08-07 |
| 4799226 | Distributed feedback laser diode comprising an active layer partly adjacent to a waveguide layer | — | 1989-01-17 |
| 4794618 | Distributed feedback laser diode | — | 1988-12-27 |
| 4751710 | Semiconductor laser device | Masayuki Yamaguchi, Mitsuhiro Kitamura | 1988-06-14 |
| 4751719 | Distributed feedback semiconductor laser device | Masayuki Yamaguchi | 1988-06-14 |
| 4629532 | Method of growing InGaAsP on InP substrate with corrugation | Tomoo Yanase | 1986-12-16 |
| 4622674 | Single longitudinal mode semiconductor laser | — | 1986-11-11 |
| 4618959 | Double heterostructure semiconductor laser with periodic structure formed in guide layer | — | 1986-10-21 |
| 4597085 | Double-channel planar heterostructure semiconductor laser | Kohroh Kobayashi, Tetsuhiko Ikegami | 1986-06-24 |
| 4575851 | Double channel planar buried heterostructure laser with periodic structure formed in guide layer | Masafumi Seki | 1986-03-11 |
| 4561915 | Process for epitaxial growth on a corrugated wafer | — | 1985-12-31 |
| 4525841 | Double channel planar buried heterostructure laser | Mitsuhiro Kitamura, Kohroh Kobayashi | 1985-06-25 |
| 4425650 | Buried heterostructure laser diode | Mitsuhiro Kitamura, Kazuhisa Kaede, Kohroh Kobayashi | 1984-01-10 |
| 4318058 | Semiconductor diode laser array | Shigeo Matsushita, Kohroh Kobayashi | 1982-03-02 |
| 4265513 | Light switch | Shigeo Matsushita, Ro Ishikawa, Kazuhisa Kaede, Shigetoki Sugimoto | 1981-05-05 |