Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4353954 | Flexible printed circuit base board and method for producing the same | Sigenori Yamaoka, Toshinaga Endo | 1982-10-12 |
| 4281223 | Electro-acoustic transducer | Masana Ugaji, Hideo Suyama, Sadaaki Sakurai, Shigenori Yamaoka, Toshinaga Endo | 1981-07-28 |