Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4935336 | Optical recording medium | Noboru Yamada, Kenichi Nishiuchi | 1990-06-19 |
| 4916048 | Optical recording medium and method of optical recording and erasing using medium | Noboru Yamada, Kenichi Nishiuchi | 1990-04-10 |
| 4659588 | Method of producing optical recording medium | Noboru Yamada, Kenichi Nishiucki | 1987-04-21 |
| 4624914 | Optical information recording medium of Te, O and Pd and method for making same | Kunio Kimura, Masatoshi Takao, Nobuo Akahira | 1986-11-25 |
| 4569038 | Optical disk, high density optical disk system, and high density recording/reproducing method using the optical disk | Michiyoshi Nagashima | 1986-02-04 |
| 4383029 | Recording medium and recording system | Noboru Yamada, Kenichi Nishiuchi | 1983-05-10 |
| 4322839 | Method and apparatus for recording and reproducing information on and from an optical disk | Tadaoki Yamashita, Takeo Ohta, Nobuo Akahira, Tatsushi Nakamura | 1982-03-30 |
| 4290909 | Process for producing a lithium borate thermoluminescent and fluorescent substance | Osamu Yamamoto | 1981-09-22 |
| 4248731 | Thermoluminescent material | Osamu Yamamoto, Tadaoki Yamashita | 1981-02-03 |