Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6425793 | Impregnated cathode and method of manufacturing same, electron gun and electron tube | Yoji Hasegawa, Shinji Ogawa, Daichi Imabayashi, Makoto Furukawa, Nobuyuki Yoshino +3 more | 2002-07-30 |
| 6270914 | Surface-hardened titanium material, surface hardening method of titanium material, watchcase decoration article, and decoration article | Yasumasa Kusano, Shizue Itoh, Kotaro Ishiyama | 2001-08-07 |
| 6252341 | Impregnated cathode having varying surface porosity | Yoji Hasegawa, Shinji Ogawa, Daichi Imabayashi, Makoto Furukawa, Nobuyuki Yoshino +3 more | 2001-06-26 |
| 5689796 | Method of manufacturing molded copper-chromium family metal alloy article | Takao Kasai, Naoyoshi Akiyoshi, Takeo Hamada | 1997-11-18 |
| 5283031 | Process for producing precision metal part by powder molding wherein the hydrogen reduction loss is controlled | Kenji Kurimura, Ken Yoshioka, Shigeru Saito, Takao Kasai, Masami Hoshi +1 more | 1994-02-01 |