Issued Patents All Time
Showing 76–100 of 103 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5505835 | Method for fabricating optical information storage medium | Yoshitaka Sakaue, Kazuhisa Ide, Kenichi Nagata, Noboru Yamada | 1996-04-09 |
| 5493561 | Optical information recording medium and information recording and reproducing method thereof | Kenichi Nishiuchi, Nobuo Akahira, Noboru Yamada, Ken'ichi Nagata | 1996-02-20 |
| 5448551 | Optical information recording media and optical information read/write device | Naoyasu Miyagawa, Kenichi Nishiuchi | 1995-09-05 |
| 5424106 | Optical information recording medium and method of designing its structure | Noboru Yamada, Nobuo Akahira, Kenichi Nishiuchi, Kenichi Nagata, Shigeaki Furukawa | 1995-06-13 |
| 5412626 | Method of recording optical information with selective correction in pulse waveform and a recording system therefor | Kenichi Nishiuchi, Kenichi Nagata, Noboru Yamada, Nobuo Akahira | 1995-05-02 |
| 5410534 | Optical information recording medium | Ken'ichi Nagata, Nobuo Akahira, Ken'ichi Nishiuchi, Noboru Yamada | 1995-04-25 |
| 5395735 | Optical information recording medium and method of manufacture | Kenichi Nagata, Noboru Yamada | 1995-03-07 |
| 5385806 | Optical information recording medium | Noboru Yamada, Masatoshi Takao | 1995-01-31 |
| 5348783 | Optical information recording medium | Noboru Yamada, Kenichi Nagata, Kenichi Nishiuchi, Nobuo Akahira | 1994-09-20 |
| 5346740 | Optical information recording medium | Noboru Yamada, Kenichi Nagata, Kenichi Nishiuchi, Nobuo Akahira | 1994-09-13 |
| 5305297 | Method for determining optimum irradiation conditions in optical data recording | Kenichi Nishiuchi, Noboru Yamada, Nobuo Akahira | 1994-04-19 |
| 5305303 | Optical information recording medium | Nobuo Akahira, Kenichi Nishiuchi, Kenichi Nagata, Noboru Yamada | 1994-04-19 |
| 5289453 | Optical information recording method | Kenichi Nishiuchi, Noboru Yamada, Nobuo Akahira | 1994-02-22 |
| 5272667 | Optical information recording apparatus for recording optical information in a phase change type optical recording medium and method therefor | Noboru Yamada, Kenichi Nishiuchi, Nobuo Akahira | 1993-12-21 |
| 5247494 | Method for recording and reproducing information on and from an optical disk having a read-only recorded zone and a writable and readable zone using a spot laser light | Noboru Yamada | 1993-09-21 |
| 5233599 | Optical disk with a recording layer composed of tellurium, antimony, and germanium | Kenichi Nishiuchi, Noboru Yamada, Nobuo Akahira | 1993-08-03 |
| 5154957 | Optical information recording medium | Noboru Yamada, Kenichi Nishiuchi, Kenichi Nagata, Nobuo Akahira | 1992-10-13 |
| 5150351 | Optical information recording apparatus for recording an input signal having variable width pulse duration and pulse spacing periods | Kenichi Nishiuchi, Noboru Yamada, Kenzou Ishibashi, Kunio Kimura, Nobuo Akahira | 1992-09-22 |
| 5130971 | Optical disk and optical information recording method | Kenichi Nishiuchi, Noboru Yamada, Nobuo Akahira | 1992-07-14 |
| 5109373 | Optical information recording method | Kenichi Nishiuchi, Noboru Yamada, Kenzou Ishibashi, Kunio Kimura, Nobuo Akahira | 1992-04-28 |
| 4980879 | Optical information recording and erasing method using two laser beams on a phase change optical recording medium | Noboru Yamada, Kenichi Nishiuchi | 1990-12-25 |
| 4939013 | Optical information storing medium | Kunio Kimura, Noboru Yamada, Susumu Sanai | 1990-07-03 |
| 4939717 | Method and apparatus for erasing and recording information using three power levels | Kenichi Nishiuchi, Noboru Yamada | 1990-07-03 |
| 4908835 | Information recording medium | Kenichi Nishiuchi, Nobuo Akahira, Noboru Yamada | 1990-03-13 |
| 4656079 | Reversible optical information recording medium | Noboru Yamada, Kunio Kimura | 1987-04-07 |