Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4869848 | Flame-retardant composition and flame-retardant cable using same | Masatake Hasegawa, Hirotada Kobayashi, Hideo Sunazuka, Takao Matsuda, Yoshioki Shingo | 1989-09-26 |
| 4853015 | High purity nitrogen and oxygen gas production equipment | — | 1989-08-01 |
| 4827112 | System for processing IC card with display function | Masafumi Hino, Nobuhiro Yasue | 1989-05-02 |