Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4761603 | High frequency oscillation proximity switch | — | 1988-08-02 |
| 4748352 | Power source reset circuit for contactless switch | Fumio Kamiya, Kenji Ueda, Keinosuke Imazu, Hidehiro Tomioka | 1988-05-31 |
| 4644298 | Proximity switch | Fumio Kamiya, Kenji Ueda, Keinosuke Imazu, Hidehiro Tomioka | 1987-02-17 |
| 4613830 | Proximity switch having variable gain oscillator | Fumio Kamiya, Kenji Ueda, Keinosuke Imazu, Hidehiro Tomioka | 1986-09-23 |
| 4486811 | Electrostatic proximity switch | Fumio Kamiya | 1984-12-04 |
| 4328433 | Proximity switch | Hiroyuki Yamasaki, Hiroyuki Miyamoto, Kenji Ueda | 1982-05-04 |
| 4287440 | Proximity switching device | Fumio Kamiya, Kenji Ueda, Hiroyuki Miyamoto | 1981-09-01 |