Issued Patents 1989
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4883010 | Thread chain cutting device | — | 1989-11-28 |
| 4879759 | Holding structure for a paging receiver having extra functions | Takashi Oyamada, Sigeki Hayasaka | 1989-11-07 |
| 4833217 | Polycarbonate resin composition | Keishiro Igi, Takayuki Okamura, Shunro Taniguchi, Masao Ishii, Yoshifumi Murata +3 more | 1989-05-23 |
| 4805006 | Light receiving element | Shuichiroh Yamaguchi, Yukio Idaka, Tatsuhiko Irie | 1989-02-14 |
| 4801822 | Semiconductor switching circuit | Yukio Idaka, Shuichiroh Yamaguchi | 1989-01-31 |