Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9238784 | Grease for electrical contact and slide electricity structure, power switch, vacuum circuit breaker, vacuum insulated switchgear, and vacuum-insulated switchgear assembling method | Takashi Sato, Kazuhiro Sato, Ayumu Morita, Kenji Tsuchiya, Toshio Nitta | 2016-01-19 |
| 8394748 | Grease composition and process for producing the same | Takeshi Hishinuma, Toshio Nitta, Tatsuya Hashimoto | 2013-03-12 |
| 7591908 | Vapor deposition apparatus and vapor deposition method | Koichi Kanaya, Toru Otsuka | 2009-09-22 |
| 7100923 | Magnetic fluid seal device | Hiroshi Anzai, Yoshimi Imamoto | 2006-09-05 |
| 6733143 | Light shielding structure | Hiroshi Anzai, Takemi Namba, Hirokazu Yamamoto, Yoshimi Imamoto | 2004-05-11 |
| 5785882 | Fluorine-based magnetic fluid | Yasushi Yamamoto, Yoshiyuki Takeishi, Yutaka Kouda, Tomoko Minagawa | 1998-07-28 |
| 5738802 | Fluorine-based magnetic fluid | Yasushi Yamamoto, Yoshiyuki Takeishi, Yutaka Kouda, Tomoko Minagawa | 1998-04-14 |
| 5718833 | Fluorine-based magnetic fluid | Yasushi Yamamoto, Yoshiyuki Takeishi, Yutaka Kouda, Tomoko Minagawa | 1998-02-17 |
| 5240628 | Process for producing magnetic fluid | Yutaka Kouda, Yasuki Karita, Hirokazu Nagato, Takahiro Ishizuka | 1993-08-31 |
| 4976883 | Process for preparing a magnetic fluid | Yutaka Koda, Hirokazu Nagato | 1990-12-11 |
| 4956113 | Process for preparing a magnetic fluid | Yutaka Koda, Hirokazu Nagato | 1990-09-11 |
| 4189257 | Sheltering apparatus for use in long wall mining | Shigeo Nakajima, Masao Tanaka, Ken Takahashi, Nobuo Kiyama | 1980-02-19 |