Issued Patents All Time
Showing 51–63 of 63 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6407480 | Circuit for driving piezoelectric transformer | Takahiro Kobayashi | 2002-06-18 |
| 6292500 | Semiconductor laser device | Yasuyuki Kouchi, Masaaki Yuri, Akio Yoshikawa, Hisanori Ishiguro | 2001-09-18 |
| 6192020 | Semiconductor laser device | Shouichi Takasuka, Shin-ichi Ijima, Akio Yoshikawa | 2001-02-20 |
| 6084895 | Semiconductor laser apparatus | Yasuyuki Kouchi, Akira Ueno, Akio Yoshimura | 2000-07-04 |
| 5793785 | Semiconductor laser device | Akio Yoshikawa, Hirokazu Shimizu | 1998-08-11 |
| 5748658 | Semiconductor laser device and optical pickup head | Akira Ueno, Hideo Nagai, Akio Yoshikawa | 1998-05-05 |
| 5729519 | Optical head including a semiconductor laser having a non-scatter area to diffuse incident light beams | Akira Ueno, Hideo Nagai, Akio Yoshikawa | 1998-03-17 |
| 5539767 | Semiconductor laser device | Akira Ueno, Hideo Nagai, Akio Yoshikawa | 1996-07-23 |
| 5517479 | Optical head including a semiconductor laser having a non-scatter incident area | Akira Ueno, Hideo Nagai, Akio Yoshikawa | 1996-05-14 |
| 5481524 | Diffraction element and optical pick-up assembly | Akira Ueno, Hideo Nagai, Akio Yoshikawa | 1996-01-02 |
| 5479426 | Semiconductor laser device with integrated reflector on a (511) tilted lattice plane silicon substrate | Akio Yoshikawa, Hirokazu Shimizu | 1995-12-26 |
| 5478438 | Method of etching semiconductor substrate | Akira Ueno, Hideo Nagai, Akio Yoshikawa | 1995-12-26 |
| 5475670 | Deflection plate for optical pick-up device | Ken Hamada, Hirokazu Shimizu | 1995-12-12 |