Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7361219 | Method for producing silicon wafer and silicon wafer | — | 2008-04-22 |
| 5993948 | Magnetic recording medium | Toshio Yamazaki, Tadashi Itou, Shigeaki Wakana, Satoshi Shimizu | 1999-11-30 |
| 5792258 | High-frequency induction heater and method of producing semiconductor single crystal using the same | Masanori Kimura, Teruaki Fukami, Hirotoshi Yamagishi | 1998-08-11 |
| 5776590 | Magnetic recording medium | Toshio Yamazaki, Tadashi Itou, Shigeaki Wakana, Satoshi Shimizu | 1998-07-07 |
| 5273598 | Optical disc manufacturing method | Toshio Higasihara, Masahiro Suzuki, Akira Gotoh, Yoshitane Tsuburaya | 1993-12-28 |
| 4911968 | Optical disc | Tosio Higasihara, Masahiro Suzuki, Akira Gotoh, Yoshitane Tuburaya | 1990-03-27 |
| 4710913 | Optical recording disc | Seiichi Matsushima, Toshio Higashihara, Mitsuru Shimizu, Masahiro Suzuki, Toshinori Sugiyama | 1987-12-01 |