Issued Patents All Time
Showing 51–75 of 75 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6249509 | Optical device with protective cover | Hideki Hirata, Isamu Kuribayashi, Hiroshi Tanabe | 2001-06-19 |
| 6226256 | Optical recording disc having synchronization mark pattern and method of its recording and reproduction | Tatsuya Kato | 2001-05-01 |
| 6192024 | Optical recording medium | Hiroyasu Inoue, Tatsuya Kato | 2001-02-20 |
| 6169722 | Phase change type optical recording medium having minute length recorded marks | Takashi Kikukawa | 2001-01-02 |
| 6154437 | Phase-change optical recording medium and its writing with high reliability after long period use and/or high environmental temperature storage | Tatsuya Kato, Takashi Kikukawa | 2000-11-28 |
| 6146733 | Optical recording medium | Hiroyasu Inoue, Tatsuya Kato | 2000-11-14 |
| 6125101 | Phase-change type optical recording medium having recording marks wider than a recording track | Takashi Kikukawa | 2000-09-26 |
| 6115351 | Phase change optical recording medium and its writing with high reliability after long period use and/or high environmental temperature storage | Tatsuya Kato, Hiroyasu Inoue | 2000-09-05 |
| 6103330 | Optical recording medium and fabrication method therefor | Masanori Kosuda, Hiroshi Shingai, Takuya Tsukagoshi | 2000-08-15 |
| 6096400 | Optical recording medium | Hiroyasu Inoue, Tatsuya Kato | 2000-08-01 |
| 6087067 | Optical recording medium | Tatsuya Kato, Tsuyoshi Komaki, Hideki Hirata | 2000-07-11 |
| 6051363 | Method for making an optical recording medium | Masanori Kosuda, Hiroshi Shingai | 2000-04-18 |
| 6040030 | Optical recording medium | Tatsuya Kato, Hiroyasu Inoue | 2000-03-21 |
| 6030679 | Optical recording material and its fabrication method | Takao Saito, Hiroshi Shingai, Tatsuya Kato, Katsuaki Yanagiuchi | 2000-02-29 |
| 5965323 | Method for preparing optical recording medium | Makoto Takahashi | 1999-10-12 |
| 5710746 | Magneto-optical recording medium and reading method with magnetic layers of different coercivity | Kenji Uchiyama, Isamu Kuribayashi, Masanori Kosuda, Hiroyasu Inoue | 1998-01-20 |
| 5700567 | Magneto-optical recording medium | — | 1997-12-23 |
| 5593789 | Magneto-optical recording medium | Kenji Uchiyama, Masanori Kosuda, Hiroyasu Inoue | 1997-01-14 |
| 5590099 | Magneto-optical recording method and method for making information-carrying magneto-optical recording medium | Giichi Shibuya, Masanori Shibahara, Suguru Takayama | 1996-12-31 |
| 5577020 | Magneto-optical disc with intermediate film layer between a recording film and a dielectric film | Kenji Uchiyama, Masanori Kosuda, Hiroyasu Inoue | 1996-11-19 |
| 5571629 | Optical recording medium | Hideki Hirata, Kenji Uchiyama, Hideki Ishizaki, Suguru Takayama | 1996-11-05 |
| 5552237 | Magnetooptical recording medium | Masanori Kosuda | 1996-09-03 |
| 5430706 | Magneto-optical disk having lands and grooves for recording information | Masanori Shibahara | 1995-07-04 |
| 4902584 | Optical recording medium | Kenji Uchiyama, Hideki Ishizaki, Suguru Takayama | 1990-02-20 |
| 4849304 | Optical recording medium | Kenji Uchiyama, Hideki Ishizaki, Suguru Takayama | 1989-07-18 |