Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9110106 | Phase difference detector, phase difference detection program, and plasma processing system using the phase difference detector | Yoshinobu Kasai, Yuji Yoshizako | 2015-08-18 |
| 8654831 | Signal detection apparatus | — | 2014-02-18 |
| 7702702 | Signal processing device for computing phase difference between alternating current signals | Ryohei Tanaka | 2010-04-20 |
| 7492817 | Adaptive digital filter | Ryohei Tanaka | 2009-02-17 |