Issued Patents All Time
Showing 1–23 of 23 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10154160 | System, processing device, and non-transitory computer readable storage medium for storing and transmitting a data part of a document | Yuji Hikawa, Manabu Hayashi, Keita Sakakura, Masafumi Ono, Hiroyoshi Uejo +2 more | 2018-12-11 |
| 9986124 | Copying apparatus | Takayuki Hashimoto, Yuichi Sugiyama | 2018-05-29 |
| 9870326 | Transfer apparatus, transfer system, and non-transitory computer readable medium | Takayuki Hashimoto, Yuichi Sugiyama | 2018-01-16 |
| 4890481 | System for measuring foreign materials in liquid | Masayoshi Ezawa, Shigeru Wakana, Yoshifumi Tomita, Yutaka Hiratsuka | 1990-01-02 |
| 4872924 | Method of producing shadow mask of color cathode ray tube | Masaharu Kumada | 1989-10-10 |
| 4779451 | System for measuring foreign materials in liquid | Masayoshi Ezawa, Shigeru Wakana, Yoshifumi Tomita, Yutaka Hiratsuka | 1988-10-25 |
| 4754188 | Color picture tube shadow mask material | Rikizo Watanabe, Ryoji Hirai | 1988-06-28 |
| 4723091 | Technique for preventing reflections in a cathode ray tube | Hiromitsu Kawamura, Masayoshi Ezawa, Katsumi Kobara, Yoshiyuki Odaka | 1988-02-02 |
| 4717853 | Projection tube whose coolant contains an ethylene oligomer | Masayoshi Ezawa, Hiroko Wakui, Shigeru Wakana, Toshikazu Morishita | 1988-01-05 |
| 4713576 | Color picture tube with shadow mask | Ryoji Hirai, Rikizo Watanabe | 1987-12-15 |
| 4636681 | Directly heated cathode | — | 1987-01-13 |
| 4543441 | Solar battery using amorphous silicon | Masaharu Kumada, Hideo Tanabe, Katsuo Yuhara, Hiroshi Kawasaki | 1985-09-24 |
| 4481265 | Photovoltaic-storage battery device | Masayoshi Ezawa, Kenkichi Suzuki, Masaharu Kumada | 1984-11-06 |
| 4446404 | Directly heated oxide cathode and production thereof | Masaharu Kumada | 1984-05-01 |
| 4382206 | Directly heated type oxide cathode | Masaharu Kumada | 1983-05-03 |
| 4349766 | Directly heated cathode for electron tube | Hisashi Ando, Ko Soeno, Hiroshi Sakamoto, Hiroshi Fukushima | 1982-09-14 |
| 4313854 | Oxide-coated cathode for electron tube | Kazuo Sunahara | 1982-02-02 |
| 4291252 | Electron tube cathode | Toshiyuki Aida, Shigehiko Yamamoto, Sadanori Taguchi, Isamu Yuito, Yukio Honda +4 more | 1981-09-22 |
| 4279784 | Thermionic emission cathodes | Shunji Saito | 1981-07-21 |
| 4256495 | Sealing glass | Hiromitsu Kawamura, Kozo Odawara | 1981-03-17 |
| 4222775 | Base metal plate materials for directly heated oxide cathodes | Masaharu Kumada | 1980-09-16 |
| 4215180 | Oxide-coated cathodes for electron tubes | Yukio Suzuki, Kazuo Sunahara | 1980-07-29 |
| 4208208 | Nickel alloy base metal plate for directly heated oxide cathodes | Masaharu Kumada | 1980-06-17 |