Issued Patents All Time
Showing 1–17 of 17 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, Toshiharu Higuchi, Osamu Nakamura, Kiyomi Koyama, Sadao Matsumoto +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, Toshiharu Higuchi, Osamu Nakamura, Kiyomi Koyama, Sadao Matsumoto +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 | Eiichirou Uda, Toshiharu Higuchi, Osamu Nakamura, Kiyomi Koyama, Sadao Matsumoto +3 more | 2000-03-07 |
| 5506804 | Dynamic Random Access Type Semiconductor Device | Kazumasa Yanagisawa, Tatsuyuki Ohta, Tetsu Udagawa, Kyoko Ishii, Hitoshi Miwa +9 more | 1996-04-09 |
| 5276648 | Testing method for a semiconductor memory device | Kazumasa Yanagisawa, Tatsuyuki Ohta, Tetsu Udagawa, Kyoko Ishii, Hitoshi Miwa +9 more | 1994-01-04 |
| 5177498 | Heat-resistant insulating substrate, thermal printing head, and thermographic apparatus | Katsuhisa Homma, Masaru Nikaido, Mutsuki Yamazaki, Shuji Yoshizawa | 1993-01-05 |
| 5157107 | Heat-resistant insulating coating material and thermal head making use thereof | Masaru Nikaido, Hikaru Okunoyama, Katsumi Yanagibashi | 1992-10-20 |
| 5150325 | Bi-CMOS semiconductor memory device, including improved layout structure and testing method | Kazumasa Yanagisawa, Tatsuyuki Ohta, Tetsu Udagawa, Kyoko Ishii, Hitoshi Miwa +9 more | 1992-09-22 |
| 5119112 | Heat-resistant insulating substrate, thermal printing head, and thermographic apparatus | Katsuhisa Homma, Masaru Nikaido, Mutsuki Yamazaki, Shuji Yoshizawa | 1992-06-02 |
| 4963893 | Heat-resistant insulating substrate, thermal printing head, and thermographic apparatus | Katsuhisa Homma, Masaru Nikaido, Mutsuki Yamazaki, Shuji Yoshizawa | 1990-10-16 |
| 4928034 | Impregnated cathode | Sakae Kimura, Masaru Nikaido, Katumi Yanagibashi, Katsuhisa Homma | 1990-05-22 |
| 4923763 | Perpendicular magnetic recording medium | Hiroki Nakamura, Takashi Yamada | 1990-05-08 |
| 4906893 | X-ray image intensifier and method of manufacturing the same | Katsuhisa Homma, Sakae Kimura, Masaru Nikaido, Yoshiharu Obata, Yoshikazu Uemura +1 more | 1990-03-06 |
| 4868584 | Heat-resistant polyimide insulative coated thermal head | Masaru Nikaido, Hikaru Okunoyama, Katsumi Yanagibashi | 1989-09-19 |
| 4835548 | Thermal head | Masaru Nikadio, Tadayoshi Kinoshita, Reiko Watanabe, Shinzo Sugai | 1989-05-30 |
| 4760370 | Resistor and an electron tube incorporating the same | Masaru Nikaido, Taketoshi Shimoma, Eiji Kamohara, Shigeru Sugawara, Hideki Yamaguchi | 1988-07-26 |
| 4562555 | Semiconductor memory device | Masamichi Ishihara, Tetsuro Matsumoto, Kazuyuki Miyazawa | 1985-12-31 |