Issued Patents All Time
Showing 26–46 of 46 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5694387 | Optical medium having a data pattern for detecting an upside-down insertion, and reproducing apparatus for use therewith | Yasuhiro Gotoh, Yoshihisa Fukushima | 1997-12-02 |
| 5681634 | Optical information medium, and method and apparatus for fabricating the same | Hisaki Miyamoto, Kiyoshi Inoue, Sakae Noda | 1997-10-28 |
| 5350499 | Method of producing microscopic structure | Narito Shibaike, Fumiaki Ueno, Toshinori Kishi | 1994-09-27 |
| 5268056 | Plasma surface treating method and apparatus | Toshinori Kishi, Fumiaki Ueno, Taro Nambu, Hiroyuki Ogawa | 1993-12-07 |
| 5268886 | Method and apparatus for reproducing signals using an optical disk having V-shaped grooves | Fumiaki Ueno, Toshinori Kishi | 1993-12-07 |
| 5221416 | Plasma surface treating method | Toshinori Kishi, Fumiaki Ueno, Taro Nambu, Hiroyuki Ogawa | 1993-06-22 |
| 5134604 | Combination optical data medium with multiple data surfaces and cassette therefor | Fumiaki Ueno, Hiroyuki Ogawa, Toshinori Kishi, Taro Nambu | 1992-07-28 |
| 4969142 | Reproduction of optically recorded signal | Yoshinari Takemura, Kazuaki Obara | 1990-11-06 |
| 4932015 | Method of reproducing signals from optical disk | Yoshinari Takemura | 1990-06-05 |
| 4905214 | Method for illuminating adjoining slants of an optical disk having a V-shaped groove | — | 1990-02-27 |
| 4875203 | Tracking servo signal generating device for an optical disc | Yoshinari Takamura, Kazuaki Obara | 1989-10-17 |
| 4868820 | Method for illuminating adjoining slants of an optical disk having a V-shaped groove | Isao Satoh | 1989-09-19 |
| 4744070 | Optical disk and method of tracking the same | Yoshinari Takemura, Kazuaki Obara | 1988-05-10 |
| 4712204 | Optical disk and method for reproducing reference signal therefrom | Yoshinari Takemura, Kazuaki Obara | 1987-12-08 |
| 4710911 | Method for recording, reproducing and erasing optical information | Noboru Yamada, Kenichi Nishiuchi | 1987-12-01 |
| 4569038 | Optical disk, high density optical disk system, and high density recording/reproducing method using the optical disk | Mutsuo Takenaga | 1986-02-04 |
| 4420828 | Optical recording and/or reproducing device | Tomio Yoshida, Shunji Harigae, Makoto Ichinose, Noboru Wakami | 1983-12-13 |
| 4403318 | Apparatus and method for recording, reproducing and erasing on optical recording discs | Tomio Yoshida, Takeo Ohta | 1983-09-06 |
| 4385303 | Optical recording and reproducing disc | Nobuo Akahira, Shunji Harigae, Tomio Yoshida, Tadaoki Yamashita | 1983-05-24 |
| 4368526 | Servo control system for optical system which focuses a converging light beam on a recording disc | Shunji Harigae, Tomio Yoshida, Yoshinobu Nakata, Toshio Sato | 1983-01-11 |
| 4328506 | Optical recording device | Tomio Yoshida, Shunji Harigae, Makoto Ichinose, Noboru Wakami | 1982-05-04 |