Issued Patents All Time
Showing 1–24 of 24 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7319820 | Method of manufacturing optical communication system | Yorishige Ishii, Toshihiro Tamura, Yukio Kurata | 2008-01-15 |
| 7295504 | Beam shaping element, and light source unit and optical pickup using same | Tazuko Kitazawa | 2007-11-13 |
| 7218813 | Optical communication system | Yorishige Ishii, Toshihiro Tamura | 2007-05-15 |
| 6937381 | Optical pickup device | Kazuya Kitamura, Yukio Kurata | 2005-08-30 |
| 6744568 | Objective lens, method for correcting manufacturing error thereof, and optical pick-up device using the same | Kazuya Kitamura, Yukio Kurata, Takeshi Yamaguchi | 2004-06-01 |
| 6741406 | Objective lens, optical pickup-device equipped with same and assembling method of same | Kazuya Kitamura, Yukio Kurata | 2004-05-25 |
| 6577341 | Imaging apparatus | Eiji Yamada, Toshiaki Harada, Tohru Okuda | 2003-06-10 |
| 6507559 | Optical recording medium having light transparent cover layer smaller in outer diameter than substrate | — | 2003-01-14 |
| 6456324 | Image shifting image pickup apparatus using filter for removing spatial frequency component | Eiji Yamada, Toshiaki Harada | 2002-09-24 |
| 6438089 | Optical pickup device | Kazuya Kitamura, Yukio Kurata | 2002-08-20 |
| 6388822 | Optical pickup device and optical recording medium | Kazuya Kitamura, Yukio Kurata | 2002-05-14 |
| 6381208 | Optical recording medium and optical recording and reproducing apparatus | Kazutaka Abe | 2002-04-30 |
| 6342978 | Pickup device for optical disk | Masayuki Nishikawa | 2002-01-29 |
| 6266086 | Imaging apparatus | Hideo Okada, Tohru Okuda | 2001-07-24 |
| 6191894 | Zoom lens and imaging device incorporating the same | Kazuya Kitamura | 2001-02-20 |
| 6108036 | Imaging apparatus having a spatial filter and image shifting mechanism controller based on an image mode | Toshiaki Harada, Eiji Yamada, Tohru Okuda | 2000-08-22 |
| 5834761 | Image input apparatus having a spatial filter controller | Hideo Okada, Masayuki Nishikawa, Tohru Okuda, Chiaki Yamawaki, Yoshinori Kinai | 1998-11-10 |
| 5754226 | Imaging apparatus for obtaining a high resolution image | Eiji Yamada | 1998-05-19 |
| 5668746 | Reproduced waveform equalization circuit | Toshiaki Harada, Chiaki Yamawaki | 1997-09-16 |
| 5657082 | Imaging apparatus and method using interpolation processing | Toshiaki Harada, Eiji Yamada | 1997-08-12 |
| 5517369 | Multi-track magnetic signal reproducing apparatus | Hitoshi Takeuchi, Eiji Yamada, Chiaki Yamawaki | 1996-05-14 |
| 5414719 | Operating circuit for galois field | Toshihisa Tanaka, Eiji Yamada | 1995-05-09 |
| 5173815 | Recording position compensation circuit for use in digital information recording-reproduction apparatus | Hidetaka Mizumaki, Chiaki Yamawaki | 1992-12-22 |
| 4812987 | Wave shaping circuit | Chiaki Yamawaki, Taizo Sasada, Katsubumi Koyanagi | 1989-03-14 |