Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8039864 | Semiconductor light emitting device and fabrication method for the same | Masakazu Takao, Mitsuhiko Sakai | 2011-10-18 |
| 7030672 | Adiabatic charging register circuit | Yuuichi Kado | 2006-04-18 |
| 6788121 | Adiabatic charging register circuit | Yuuichi Kado | 2004-09-07 |
| 6426518 | Semiconductor light emitting device | Yukio Shakuda, Yukio Matsumoto | 2002-07-30 |
| 6329216 | Method of manufacturing an AlGaInP light emitting device using auto-doping | Yukio Matsumoto, Yukio Shakuda | 2001-12-11 |
| 6265324 | Method of manufacturing semiconductor device and mask for forming thin film pattern | Tsuyoshi Tsutsui, Yasuo Miyano, Koutarou Ogura | 2001-07-24 |
| 6258619 | Fabrication of semiconductor light emitting device | Masayuki Sonobe, Yukio Shakuda, Tsuyoshi Tsutsui, Norikazu Itoh | 2001-07-10 |
| 6242951 | Adiabatic charging logic circuit | Takakuni Douseki, Mitsuru Harada, Ken Takeya | 2001-06-05 |
| 6236067 | Semiconductor light emitting device using an AlGaInP group or AlGaAs group material | Yukio Shakuda, Yukio Matsumoto | 2001-05-22 |
| 6194241 | Semiconductor light emitting device and method of manufacturing the same | Tsuyoshi Tsutsui, Yukio Shakuda, Masayuki Sonobe, Norikazu Itoh | 2001-02-27 |
| 6191437 | Semiconductor light emitting device and method of manufacturing the same | Masayuki Sonobe, Tsuyoshi Tsutsui, Norikazu Itoh | 2001-02-20 |
| 6168962 | Method of manufacturing a semiconductor light emitting device | Norikazu Itoh, Yukio Shakuda, Masayuki Sonobe, Tsuyoshi Tsutsui | 2001-01-02 |
| 6163037 | Double heterojunction light emitting device possessing a dopant gradient across the N-type layer | Yukio Matsumoto, Yukio Shakuda | 2000-12-19 |
| 6156584 | Method of manufacturing a semiconductor light emitting device | Norikazu Itoh, Yukio Shakuda, Masayuki Sonobe, Tsuyoshi Tsutsui | 2000-12-05 |
| 6107647 | Semiconductor AlGaInP light emitting device | Yukio Matsumoto, Yukio Shakuda | 2000-08-22 |
| 6107644 | Semiconductor light emitting device | Yukio Shakuda, Masayuki Sonobe, Tsuyoshi Tsutsui, Norikazu Itoh | 2000-08-22 |
| 6107648 | Semiconductor light emitting device having a structure which relieves lattice mismatch | Yukio Shakuda, Yukio Matsumoto | 2000-08-22 |
| 6054716 | Semiconductor light emitting device having a protecting device | Masayuki Sonobe, Tsuyoshi Tsutsui, Norikazu Itoh, Shinji Isokawa, Hidekazu Toda | 2000-04-25 |
| 5939735 | Semiconductor light emitting device | Tsuyoshi Tsutsui, Yukio Shakuda, Masayuki Sonobe, Norikazu Itoh | 1999-08-17 |