Issued Patents All Time
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5297127 | Optical device | Hideki Ohtsuka | 1994-03-22 |
| 5265087 | Information medium with improved temperature characteristics | Nobuo Inage, Ryoji Yamaguchi | 1993-11-23 |
| 5062099 | Information processing apparatus | Masaru Ishii, Hiroshi Yamamoto | 1991-10-29 |
| 4982399 | Information processing apparatus | Yoshiaki Tago, Nobuo Inage | 1991-01-01 |
| 4916684 | Head drive arrangement for a data reproducing apparatus | Masaru Ishii, Nobuo Inage | 1990-04-10 |
| 4899328 | Data reproducing apparatus and method for locking a reproducing head | Masaru Ishii | 1990-02-06 |
| 4896312 | Cartridge loading apparatus | Ryoji Yamaguchi | 1990-01-23 |
| 4866697 | Information memory medium | Ryoji Yamaguchi, Nobuo Inage | 1989-09-12 |
| 4827468 | Information memory medium | Ryoji Yamaguchi, Nobuo Inage | 1989-05-02 |
| 4827470 | Information memory medium | Nobuo Inage | 1989-05-02 |
| 4731776 | Cartridge loading apparatus | Masara Ishii | 1988-03-15 |
| 4665457 | Information storage disk cartridge | Yoshiaki Tago | 1987-05-12 |
| 4647948 | Radiation-sensitive record utilizing an annular ring and projections on the disc as spacers between two adjacent discs | — | 1987-03-03 |
| 4555716 | Optical disk having elastic deformable spacer | Yoshiaki Tago | 1985-11-26 |
| 4504842 | Radiation-sensitive record disc | — | 1985-03-12 |