Issued Patents All Time
Showing 51–75 of 75 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5740192 | Semiconductor laser | Ako Hatano, Hidetoshi Fujimoto, Kazuhiko Itaya, Johji Nishio | 1998-04-14 |
| 5656832 | Semiconductor heterojunction device with ALN buffer layer of 3nm-10nm average film thickness | Ako Hatano | 1997-08-12 |
| 5617438 | Semiconductor laser and method for manufacturing the same | Ako Hatano | 1997-04-01 |
| 5432808 | Compound semicondutor light-emitting device | Ako Hatano | 1995-07-11 |
| 5317167 | Semiconductor light-emitting device with InGaAlp | Toshihide Izumiya, Ako Hatano | 1994-05-31 |
| 5273933 | Vapor phase growth method of forming film in process of manufacturing semiconductor device | Ako Hatano, Toshihide Izumiya | 1993-12-28 |
| 5235194 | Semiconductor light-emitting device with InGaAlP | Toshihide Izumiya, Ako Hatano | 1993-08-10 |
| 5228044 | Ultraviolet semiconductor laser and method of manufacturing the same | — | 1993-07-13 |
| 5168077 | Method of manufacturing a p-type compound semiconductor thin film containing a III-group element and a v-group element by metal organics chemical vapor deposition | Yasuo Ashizawa, Takao Noda, Mitsuhiro Kushibe, Masahisa Funemizu, Kazuhiro Eguchi +1 more | 1992-12-01 |
| 5103271 | Semiconductor light emitting device and method of fabricating the same | Toshihide Izumiya, Ako Hatano | 1992-04-07 |
| 5079184 | Method of manufacturing III-IV group compound semiconductor device | Ako Hatano, Toshihide Izumiya | 1992-01-07 |
| 5076860 | AlGaN compound semiconductor material | Toshihide Izumiya, Ako Hatano | 1991-12-31 |
| 5044794 | Ink ribbon cassette | Noboru Shimoyama | 1991-09-03 |
| 5042043 | Semiconductor laser using five-element compound semiconductor | Ako Hatano, Toshihide Izumiya | 1991-08-20 |
| 5036521 | Semiconductor laser device | Genichi Hatakoshi, Kazuhiko Itaya, Shigeya Naritsuka, Masayuki Ishikawa, Hajime OKUDA +4 more | 1991-07-30 |
| 5034957 | Semiconductor laser device | Yukie Nishikawa, Hajime OKUDA, Masayuki Ishikawa, Hideto Sugawara, Hideo Shiozawa +1 more | 1991-07-23 |
| 5005057 | Semiconductor light-emitting diode and method of manufacturing the same | Toshihide Izumiya, Ako Hatano | 1991-04-02 |
| 4949349 | Double-heterostructure semiconductor with mesa stripe waveguide | Niyoko Watanabe, Hideto Sugawara, Masayuki Ishikawa, Yukio Watanabe, Motoyuki Yamamoto | 1990-08-14 |
| 4928285 | Impurity-doped semiconductor laser device for single wavelength oscillation | Mitsuhiro Kushibe, Kazuhiro Eguchi, Masahisa Funamizu | 1990-05-22 |
| 4910743 | Semiconductor laser with mesa stripe waveguide structure | Masayuki Ishikawa, Motoyuki Yamamoto, Yukio Watanabe, Hideto Sugawara | 1990-03-20 |
| 4893313 | Semiconductor laser device which has a double-hetero structure having an optimal layer thickness | Genichi Hatakoshi, Kazuhiko Itaya, Shigeya Naritsuka, Masayuki Ishikawa, Hajime OKUDA +4 more | 1990-01-09 |
| D302828 | Ink ribbon cassette for electronic typewriter | Aiko Endo | 1989-08-15 |
| 4835117 | Manufacturing method for semiconductor laser with mesa stripe | Masayuki Ishikawa, Motoyuki Yamamoto, Yukio Watanabe, Hideto Sugawara | 1989-05-30 |
| 4809287 | Double-heterostructure semiconductor with mesa stripe waveguide | Miyoko Watanabe, Hideto Sugawara, Masayuki Ishikawa, Yukio Watanabe, Motoyuki Yamamoto | 1989-02-28 |
| 4792958 | Semiconductor laser with mesa stripe waveguide structure | Masayuki Ishikawa, Motoyuki Yamamoto, Yukio Watanabe, Hideto Sugawara | 1988-12-20 |