Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4403832 | Liquid crystal display device | Masashi Tanaka, Yutaka Nakajima, Yoshimichi Shibuya | 1983-09-13 |
| 4392747 | Display device structure | Akio Kumada, Makoto Homma, Masashi Tanaka | 1983-07-12 |
| 4367426 | Ceramic transparent piezoelectric transducer | Akio Kumada, Masashi Tanaka, Kazuma SUZUKI, Masaru Yokosuka, Shinsuke Miura +1 more | 1983-01-04 |
| 4362400 | Timepiece with alarm function including annular diaphragm to accommodate battery | Masashi Tanaka, Kazuo Kojima, Yutaka Nakajima | 1982-12-07 |