Issued Patents All Time
Showing 1–18 of 18 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7037413 | Optical information recording medium, producing method thereof and method of recording/erasing/reproducing information | Mayumi Otoba, Noboru Yamada, Hiroyuki Ohta, Eiji Ohno, Ken'ichi Nagata | 2006-05-02 |
| 6858277 | Information recording medium and method for manufacturing the same | Noboru Yamada, Rie Kojima, Toshiyuki Matsunaga | 2005-02-22 |
| 6821707 | Optical information recording medium, producing method thereof and method of recording/erasing/reproducing information | Mayumi Uno, Noboru Yamada, Hiroyuki Ohta, Eiji Ohno, Ken'ichi Nagata | 2004-11-23 |
| 6807142 | Optical information recording medium and method for initializing the same | Ken'ichi Nagata, Kenichi Nishiuchi, Noboru Yamada | 2004-10-19 |
| 6503690 | Optical information recording medium, method for producing the same, and method for recording and reproducing optical information | Mayumi Uno, Noboru Yamada | 2003-01-07 |
| 6268034 | Optical information recording medium and method for producing the same, method for recording and reproducing information thereon and recording/reproducing apparatus | Hideki Kitaura, Noboru Yamada, Hiroyuki Ohta | 2001-07-31 |
| 6153063 | Optical information recording medium, producing method thereof and method of recording/erasing/reproducing information | Noboru Yamada, Mayumi Otoba, Kenichi Nagata | 2000-11-28 |
| 6060221 | Method and apparatus for initializing optical recording medium | Shigeaki Furukawa, Noboru Yamada, Kenichi Nishiuchi | 2000-05-09 |
| RE36383 | Optical recording medium and production process for the medium | Kazumi Yoshioka, Takeo Ohta, Masami Uchida, Shigeaki Furukawa | 1999-11-09 |
| 5753334 | Optical recording medium | Kazumi Yoshioka, Takeo Ohta, Shigeaki Furukawa | 1998-05-19 |
| 5684778 | Initialization process for a phase change recording medium with a zero level drop in flash light emission | Noboru Yamada, Shigeaki Furukawa | 1997-11-04 |
| 5681632 | Optical information recording medium | Hideki Kitaura, Tetsuya Akiyama, Takeo Ohta, Ken'ichi Nagata, Noboru Yamada | 1997-10-28 |
| 5587216 | Optical recording medium | Kazumi Yoshioka, Takeo Ohta, Shigeaki Furukawa | 1996-12-24 |
| 5453346 | Optical information recording medium having protection layers with different properties on both sides of an optical active layer | Shigeaki Furukawa, Noboru Yamada | 1995-09-26 |
| 5395669 | Optical record medium | Takeo Ohta, Shigeaki Furukawa, Tetsuya Akiyama | 1995-03-07 |
| 5230973 | Method of recording and erasing information in an erasible optical recording medium | Kazumi Yoshioka, Takeo Ohta, Masami Uchida, Shigeaki Furukawa | 1993-07-27 |
| 5194363 | Optical recording medium and production process for the medium | Kazumi Yoshioka, Takeo Ohta, Masami Uchida, Shigeaki Furukawa | 1993-03-16 |
| 5151295 | Process for manufacturing an optical recording medium | Masami Uchida, Kazumi Yoshioka, Takeo Ohta, Keiichiro Horai | 1992-09-29 |