Issued Patents All Time
Showing 1–3 of 3 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 | Toshiharu Higuchi, 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 | Toshiharu Higuchi, Osamu Nakamura, Kiyomi Koyama, Sadao Matsumoto, Yoshiaki Ouchi +3 more | 2001-10-16 |
| 6034469 | Impregnated type cathode assembly, cathode substrate for use in the assembly, electron gun using the assembly, and electron tube using the cathode assembly | Toshiharu Higuchi, Osamu Nakamura, Kiyomi Koyama, Sadao Matsumoto, Yoshiaki Ouchi +3 more | 2000-03-07 |