Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4603460 | Method for manufacturing a heat exchanger | Nobuyuki Yano, Takashi Inami, Masao Wakai | 1986-08-05 |
| 4291781 | Speaker diaphragm and method of preparation of the same | Hirotoshi Niguchi | 1981-09-29 |
| 4273900 | Diaphragm for acoustic equipment | Kosaku Murata, Satoshi Takayama | 1981-06-16 |