Issued Patents All Time
Showing 26–33 of 33 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4962320 | Input protection circuit for MOS device | Yoshio Okada, Sadao IMADA | 1990-10-09 |
| 4908250 | Optical recording medium and production method thereof | Akira Gotoh, Yukinobu Yamazaki, Naoyuki Kikuchi, Shinkichi Horigome, Motoyasu Terao +3 more | 1990-03-13 |
| 4896294 | Semiconductor memory device with row and column word lines and row and column bit lines | Nobuyuki Ikumi | 1990-01-23 |
| 4876133 | Optical data recording system and method of production of recording medium | Toshinori Sugiyama, Tetsurou Ikegaki, Yoshitane Tuburaya | 1989-10-24 |
| 4720826 | Ventilation arrangement for use in an optical recording disc | Toshinori Sugiyama | 1988-01-19 |
| 4710913 | Optical recording disc | Seiichi Matsushima, Toshio Higashihara, Ken Yoshizawa, Masahiro Suzuki, Toshinori Sugiyama | 1987-12-01 |
| 4663584 | Intermediate potential generation circuit | Yoshio Okada | 1987-05-05 |
| 4226933 | Method of manufacturing a decorative panel | Hideo Ishizawa, Akira Niwayama, Takashi Kagami | 1980-10-07 |