Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10529068 | Defect inspection method and apparatus | Kaoru Sakai, Osamu Kikuchi | 2020-01-07 |
| 10354372 | Defect inspection method and apparatus | Kaoru Sakai, Osamu Kikuchi | 2019-07-16 |
| 9488847 | Variable optical attenuator | Hiroaki Ono, Yuko Ota, Takashi Kato | 2016-11-08 |
| 8660159 | Laser diode, optical pickup device, optical disk apparatus, and optical communications equipment | Kanji Takeuchi | 2014-02-25 |
| 7580435 | Laser diode, optical pickup device, optical disk apparatus, and optical communications equipment | Kanji Takeuchi | 2009-08-25 |
| 7379226 | Variable optical attenuator | Teruhisa Nakamura, Hidenori Nakata, Yuko Ohta | 2008-05-27 |
| 7339877 | Optical head device and information processing apparatus | Kazuma Aiki | 2008-03-04 |
| 6879613 | Laser diode, optical pickup device, optical disk apparatus, and optical communications equipment | Kanji Takeuchi | 2005-04-12 |
| 5940423 | Semiconductor laser, optical pickup device, and optical record and/or reproducing apparatus | — | 1999-08-17 |
| 5920587 | Optical device and method of manufacturing the same | Hironobu Narui, Masato Doi, Yoshinobu Higuchi | 1999-07-06 |
| 5883913 | Optical device | Masato Doi, Hironobu Narui, Osamu Matsuda | 1999-03-16 |
| 5708645 | Semiconductor laser device to detect a divided reflected light beam | Hironobu Narui, Masato Doi, Osamu Matsuda | 1998-01-13 |
| 5679947 | Optical device having a light emitter and a photosensor on the same optical axis | Masato Doi, Hironobu Narui, Osamu Matsuda | 1997-10-21 |
| 5608233 | Optical device for magneto-optical disc system | Hironobu Narui, Masato Doi, Osamu Matsuda | 1997-03-04 |
| 5568463 | Semiconductor laser device to detect a divided reflected light beam | Hironobu Narui, Masato Doi, Osamu Matsuda | 1996-10-22 |
| 5438583 | Semiconductor laser with optimum resonator | Hironobu Narui, Masato Doi, Osamu Matsuda | 1995-08-01 |