Issued Patents 1989
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4877681 | Heat-sensitive transfer material | Koji Hanada, Masashi Sawamura, Takeshi Yoshikawa, Hiroyuki Nihashi | 1989-10-31 |
| 4823908 | Directional loudspeaker system | Mikio Iwasa, Youichi Kimura, Akira Nakamura | 1989-04-25 |
| 4803242 | Diaphragm for loudspeakers | Kousaku Murata, Satoshi Takayama, Hiroyuki Takewa, Shuji Saiki | 1989-02-07 |
| 4799514 | Rotary servovalve for power-assisted steering system | Katsuhisa Mori | 1989-01-24 |
| 4798050 | Control system for hydraulic tandem pump in motor vehicle | Keiichi Nakamura, Yoshiharu Inaguma, Harunori Shiratori | 1989-01-17 |