Issued Patents All Time
Showing 26–50 of 55 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6057565 | Semiconductor light emitting device including a non-stoichiometric compound layer and manufacturing method thereof | Hiroaki Yoshida, Masayuki Ishikawa, Hidetoshi Fujimoto, Yoshihiro Kokubun | 2000-05-02 |
| 6031858 | Semiconductor laser and method of fabricating same | Masaaki Onomura, John Rennie, Masayuki Ishikawa, Shinya Nunoue, Mariko Suzuki | 2000-02-29 |
| 5987048 | Gallium nitride-based compound semiconductor laser and method of manufacturing the same | Masayuki Ishikawa, Masahiro Yamamoto, Shinya Nunoue, Johji Nishio, Hidetoshi Fujimoto | 1999-11-16 |
| 5978139 | Diffraction grating lens and optical disk recording/reproducing apparatus using the same | Masahiro Yamamoto | 1999-11-02 |
| 5972730 | Nitride based compound semiconductor light emitting device and method for producing the same | Shinji Saito, John Rennie, Masaaki Onomura | 1999-10-26 |
| 5966396 | Gallium nitride-based compound semiconductor laser and method of manufacturing the same | Haruhiko Okazaki, Hidetoshi Fujimoto, Masayuki Ishikawa, Shinya Nunoue, Masahiro Yamamoto | 1999-10-12 |
| 5889295 | Semiconductor device | John Rennie | 1999-03-30 |
| 5786603 | Multilayer structured semiconductor devices | John Rennie, Shinji Saito | 1998-07-28 |
| 5780873 | Semiconductor device capable of easily forming cavity and its manufacturing method | Kazuhiko Itaya, Masahiro Yamamoto, Masaaki Onomura, Hidetoshi Fujimoto, Hideto Sugawara +3 more | 1998-07-14 |
| 5696389 | Light-emitting semiconductor device | Masayuki Ishikawa, Hideto Sugawara, Yukie Nishikawa, Masaaki Onomura, Shinji Saito +5 more | 1997-12-09 |
| 5585649 | Compound semiconductor devices and methods of making compound semiconductor devices | Masayuki Ishikawa, Yukie Nishikawa, Masaaki Onomura, Shinji Saito, Peter James Parbrook | 1996-12-17 |
| 5488233 | Semiconductor light-emitting device with compound semiconductor layer | Masayuki Ishikawa, Yukie Nishikawa, Shinji Saito, Peter James Parbrook, Masaaki Onomura +1 more | 1996-01-30 |
| 5406574 | Semiconductor laser device | John Rennie, Masaki Okajima | 1995-04-11 |
| 5389800 | Semiconductor light-emitting device | Kazuhiko Itaya | 1995-02-14 |
| 5377291 | Wavelength converting optical device | Masaki Okajima, Kazutaka Terashima, Yutaka Uematsu | 1994-12-27 |
| 5343486 | Semiconductor laser device | Kazuhiko Itaya, Koichi Nitta | 1994-08-30 |
| 5321712 | Semiconductor light-emitting device having a cladding layer composed of an InGaAlp-based compound | Kazuhiko Itaya, Koichi Nitta, Yukie Nishikawa, Hideto Sugawara, Mariko Suzuki | 1994-06-14 |
| 5305341 | Semiconductor laser whose active layer has an ordered structure | Yukie Nishikawa, Koichi Nitta, Masaki Okajima, Minoru Watanabe, Kazuhiko Itaya | 1994-04-19 |
| 5282218 | Semiconductor laser device | Masaki Okajima, Koichi Nitta, Yukie Nishikawa, Kazuhiko Itaya | 1994-01-25 |
| 5202895 | Semiconductor device having an active layer made of InGaAlP material | Koichi Nitta, Masayuki Ishikawa, Yukie Nishikawa, Hideto Sugawara, Minoru Watanabe +1 more | 1993-04-13 |
| 5181218 | Manufacturing method of semiconductor laser with non-absorbing mirror structure | Masayuki Ishikawa, Hajime OKUDA, Hideo Shiozawa, Kazuhiko Itaya, Yukio Watanabe +1 more | 1993-01-19 |
| 5153889 | Semiconductor light emitting device | Hideto Sugawara, Masayuki Ishikawa, Yoshihiro Kokubun, Yukie Nishikawa, Shigeya Naritsuka +2 more | 1992-10-06 |
| 5138404 | Semiconductor device for passing current between a GaAs layer and an InGaAlP layer | Masayuki Ishikawa, Kazuhiko Itaya | 1992-08-11 |
| 5113469 | Optical wavelength-converting device for guided-wave second-harmonic generation in Cerenkov radiation mode | Kazutaka Terashima, Masaru Kawachi, Yutaka Uematsu | 1992-05-12 |
| 5065404 | Transverse-mode oscillation semiconductor laser device | Masaki Okajima, Masayuki Ishikawa, Yutaka Uematsu, Nawoto Motegi | 1991-11-12 |