Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7593540 | Electroacoustic transducer and magnetic circuit unit | — | 2009-09-22 |
| 7557474 | Electromagnetic exciter | Atsushi Kuwabara | 2009-07-07 |
| 6720691 | Vibrating device for transmitting information | Akira Yoneyama | 2004-04-13 |
| 4748408 | Method and apparatus for providing direction-indicative output signals to the integrating amplifier of a device for detecting magnetic direction | — | 1988-05-31 |
| 4337334 | Process for production of phenolic resin from bisphenol-A by-products | Yoshiro Shimizu, Mitsuhiro Iwasa, Kunio Hanauye | 1982-06-29 |