Issued Patents All Time
Showing 26–50 of 63 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6426518 | Semiconductor light emitting device | Yukio Matsumoto, Shunji Nakata | 2002-07-30 |
| 6376866 | GaN semiconductor light emitting device having a group II-VI substrate | — | 2002-04-23 |
| 6329216 | Method of manufacturing an AlGaInP light emitting device using auto-doping | Yukio Matsumoto, Shunji Nakata | 2001-12-11 |
| 6298079 | Gallium nitride type laser for emitting blue light | Haruo Tanaka | 2001-10-02 |
| 6274891 | Semiconductor laser | Haruo Tanaka | 2001-08-14 |
| 6258619 | Fabrication of semiconductor light emitting device | Masayuki Sonobe, Shunji Nakata, Tsuyoshi Tsutsui, Norikazu Itoh | 2001-07-10 |
| 6238947 | Semiconductor light-emitting device and method of fabricating the same | — | 2001-05-29 |
| 6236067 | Semiconductor light emitting device using an AlGaInP group or AlGaAs group material | Yukio Matsumoto, Shunji Nakata | 2001-05-22 |
| 6194241 | Semiconductor light emitting device and method of manufacturing the same | Tsuyoshi Tsutsui, Shunji Nakata, Masayuki Sonobe, Norikazu Itoh | 2001-02-27 |
| 6168962 | Method of manufacturing a semiconductor light emitting device | Norikazu Itoh, Shunji Nakata, Masayuki Sonobe, Tsuyoshi Tsutsui | 2001-01-02 |
| 6163037 | Double heterojunction light emitting device possessing a dopant gradient across the N-type layer | Yukio Matsumoto, Shunji Nakata | 2000-12-19 |
| 6156584 | Method of manufacturing a semiconductor light emitting device | Norikazu Itoh, Shunji Nakata, Masayuki Sonobe, Tsuyoshi Tsutsui | 2000-12-05 |
| 6121656 | Semiconductor memory device mounted with a light emitting device | Haruo Tanaka | 2000-09-19 |
| 6115399 | Semiconductor light emitting device | — | 2000-09-05 |
| 6107647 | Semiconductor AlGaInP light emitting device | Yukio Matsumoto, Shunji Nakata | 2000-08-22 |
| 6107644 | Semiconductor light emitting device | Shunji Nakata, Masayuki Sonobe, Tsuyoshi Tsutsui, Norikazu Itoh | 2000-08-22 |
| 6107648 | Semiconductor light emitting device having a structure which relieves lattice mismatch | Shunji Nakata, Yukio Matsumoto | 2000-08-22 |
| 6087681 | GaN semiconductor light emitting device having a group III-V substrate | — | 2000-07-11 |
| 6084899 | Semiconductor light emitting device and manufacturing method | — | 2000-07-04 |
| 6072819 | Semiconductor light-emitting device and method of fabricating the same | — | 2000-06-06 |
| 6060727 | Light emitting semiconductor device | — | 2000-05-09 |
| 5981978 | Superluminescent diode and method for manufacturing the same | Masato Mushiage, Tatsuo Yamauchi | 1999-11-09 |
| 5974069 | Semiconductor laser and manufacturing method thereof | Haruo Tanaka | 1999-10-26 |
| 5940684 | Method and equipment for manufacturing semiconductor device | Haruo Tanaka | 1999-08-17 |
| 5939735 | Semiconductor light emitting device | Tsuyoshi Tsutsui, Shunji Nakata, Masayuki Sonobe, Norikazu Itoh | 1999-08-17 |