Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7099754 | Signal safety method, signal safety apparatus and signal safety system | Yoichi Sugita, Dai Watanabe, Takatoshi Miyazaki | 2006-08-29 |
| 6732023 | Train control method and apparatus | Yoichi Sugita, Dai Watanabe, Yasushi Yokosuka | 2004-05-04 |
| 5665468 | Magneto-optical recording medium | Masahiko Sekiya, Tohru Horiguchi | 1997-09-09 |
| 5633746 | Magneto-optical recording medium | Masahiko Sekiya | 1997-05-27 |
| 5626973 | Magneto-optical layer and magneto-optical recording medium | Yoshihiko Takeda, Tomokazu Umezawa | 1997-05-06 |
| 5614287 | Magneto-optical recording medium comprising a specified substrate | Masahiko Sekiya, Utami Yonemura | 1997-03-25 |
| 5560998 | Magneto-optical recording medium | Atsushi Oyamatsu, Kazutomi Suzuki | 1996-10-01 |
| 5512364 | Magneto-optical recording medium | Tetsuo Sato, Masahiko Sekiya, Kazutomi Suzuki | 1996-04-30 |
| 5492773 | Magneto-optical recording medium | Masahiko Sekiya | 1996-02-20 |
| 5433788 | Apparatus for plasma treatment using electron cyclotron resonance | Yasuhiro Mochizuki, Naohiro Momma, Shigeru Takahashi, Takuya Fukuda, Noboru Suzuki +2 more | 1995-07-18 |
| 5192626 | Optical recording medium | Masahiko Sekiya, Takayuki Ishizaki | 1993-03-09 |
| 5093174 | Optical recording medium | Kazutomi Suzuki, Takashi Tomie, Tadanori Nakatani, Kimio Kinoshita | 1992-03-03 |
| 5053288 | Optical recording medium | Eiichi Hashimoto, Tetsuo Sato | 1991-10-01 |
| 4707198 | Amorphous alloy and production method thereof | Hiromitsu Ino, Kazuto Tokumitsu | 1987-11-17 |
| 4345431 | Exhaust gas cleaning system for diesel engines | Yoshinobu Suzuki, Tomoya Tukuhiro, Yoshiyuki Iwasawa, Yasuo Kajioka, Tomio Komine | 1982-08-24 |
| 4215168 | Laminated multilayer sheet structure and its utilization | Utami Yonemura, Kunio Itoh, Yuji Mitani, Shigenobu Sobajima | 1980-07-29 |
| 4206615 | Insulative multi-pane window structure of refrigerator or freezer | Shigenobu Sobajima, Kunio Itoh, Utami Yonemura, Yuji Mitani | 1980-06-10 |