Issued Patents All Time
Showing 1–20 of 20 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4816696 | Variable-speed pumped-storage power generating system | Akihiro Sakayori, Takao Kuwabara, Akira Brando, Yasuteru Oono, Isao Yokoyama +1 more | 1989-03-28 |
| 4812729 | Protecting apparatus for secondary excitation type variable speed AC generator/motor | Akio Ito, Hidenori Sawa, Hiroshi Sugisaka, Hiroto Nakagawa, Yasuteru Oono +1 more | 1989-03-14 |
| 4743827 | Variable speed pumping-up electrical power system | Junichi Shiozaki, Takao Kuwabara, Akira Bando, Kenichi Ono, Akihiro Sakayori +2 more | 1988-05-10 |
| D287139 | Calculator | — | 1986-12-09 |
| D285566 | Printer | — | 1986-09-09 |
| D284200 | Calculator | — | 1986-06-10 |
| D281886 | Electronic printing calculator | Masaji Sawada, Hiroshi Sakaguchi, Kazuo Yamada | 1985-12-24 |
| D281435 | Printing calculator | Masaji Sawada, Hiroshi Sakaguchi, Kazuo Yamada | 1985-11-19 |
| D280418 | Electronic printing calculator | Masaji Sawada, Hiroshi Sakaguchi, Kazuo Yamada | 1985-09-03 |
| D280209 | Electronic printing calculator | Masaji Sawada, Hiroshi Sakaguchi, Kazuo Yamada | 1985-08-20 |
| D279106 | Desk-top calculator | Masaji Sawada, Hiroshi Sakaguchi, Kazuo Yamada | 1985-06-04 |
| D278156 | Printing calculator | Masaji Sawada, Hiroshi Sakaguchi, Kazuo Yamada | 1985-03-26 |
| D276238 | Document feeder for copying machine | Mikio Kosako, Harumi Sakamoto | 1984-11-06 |
| D276051 | Electronic copying machine | Mikio Kosako | 1984-10-23 |
| D270252 | Electrostatic copying machine | — | 1983-08-23 |
| D267093 | Teller machine | Yoshiaki Kobayashi | 1982-11-30 |
| D261994 | Digital watch | Masafumi Yamagami, Harumi Tatsugami | 1981-11-24 |
| D261731 | Digital watch | Masafumi Yamagami, Harumi Tatsugami | 1981-11-10 |
| D261732 | Digital watch | Masafumi Yamagami, Harumi Tatsugami | 1981-11-10 |
| D258889 | Combined electronic calculating machine, radio and clock | — | 1981-04-14 |