Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7855940 | Pickup lens with phase compensator and optical pickup apparatus using the same | Keiko Hirao, Mitsuhiro Miyauchi, Yutaka Makino, Yasuyuki Sugi, Yoshikazu Mitsui | 2010-12-21 |
| 7787349 | Optical pickup lens and optical pickup apparatus | Mitsuhiro Miyauchi, Yasuyuki Sugi, Yutaka Makino | 2010-08-31 |
| 7755998 | Optical pickup system, optical head, optical disk apparatus, and objective lens | Yasuyuki Sugi, Yoshiaki Minakawa, Mitsuhiro Miyauchi | 2010-07-13 |
| 7586815 | Pickup lens with phase compensator and optical pickup apparatus using the same | Keiko Hirao, Mitsuhiro Miyauchi, Yutaka Makino, Yasuyuki Sugi, Yoshikazu Mitsui | 2009-09-08 |
| 6876506 | Information recording medium, information recording/reproducing head, and information storage device | Nobuyuki Inaba, Teruaki Takeuchi | 2005-04-05 |
| 6717898 | Optical information reproducing method for reproducing information by generating a signal representing a center of a mark | Shigeru Nakamura, Takeshi Maeda | 2004-04-06 |
| 6577573 | Optical information reproducing method in which either a first edge signal or a second edge signal is selected depending on a length of a mark on an optical information medium | Shigeru Nakamura, Takeshi Maeda | 2003-06-10 |
| 6430131 | Optical information reproducing device | Shigeru Nakamura, Takeshi Maeda | 2002-08-06 |