Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6447355 | Impregnated-type cathode substrate with large particle diameter low porosity region and small particle diameter high porosity region | Eiichirou Uda, Osamu Nakamura, Kiyomi Koyama, Sadao Matsumoto, Yoshiaki Ouchi +3 more | 2002-09-10 |
| 6304024 | Impregnated-type cathode substrate with large particle diameter low porosity region and small particle diameter high porosity region | Eiichirou Uda, Osamu Nakamura, Kiyomi Koyama, Sadao Matsumoto, Yoshiaki Ouchi +3 more | 2001-10-16 |
| 6130502 | Cathode assembly, electron gun assembly, electron tube, heater, and method of manufacturing cathode assembly and electron gun assembly | Kazuo Kobayashi, Takashi Sudo, Hideharu Takahashi, Sakae Kimura, Shinpei Koshigoe +1 more | 2000-10-10 |
| 6034469 | Impregnated type cathode assembly, cathode substrate for use in the assembly, electron gun using the assembly, and electron tube using the cathode assembly | Eiichirou Uda, Osamu Nakamura, Kiyomi Koyama, Sadao Matsumoto, Yoshiaki Ouchi +3 more | 2000-03-07 |
| 5762997 | Method of manufacturing a cathode assembly | Akihito Hara, Toru Yakabe, Shigeo Kanda, Eiji Yamamoto | 1998-06-09 |
| 5543682 | Cathode assembly incorporating a black layer formed from particles having a specified average particle size | Akihito Hara, Toru Yakabe, Shigeo Kanda, Eiji Yamamoto | 1996-08-06 |
| 5027029 | Indirectly heated cathode assembly and its associated electron gun structure | Sadao Matsumoto, Toru Yakabe, Sakae Kimura | 1991-06-25 |
| 4524296 | Cathode structure for electron tube | Shouji Nakayama, Yukio Takanashi, Touru Yakabe | 1985-06-18 |
| 4338542 | Directly heated cathode assembly | Yukio Takanashi, Shouji Nakayama | 1982-07-06 |
| 4298814 | Directly heated type cathode assembly | Yukio Takanashi | 1981-11-03 |