Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8468187 | Digital filter device, phase detection device, position detection device, AD conversion device, zero cross detection device, and digital filter program | Narutoshi Yokokawa | 2013-06-18 |
| 8408254 | Hydrogen filling apparatus | Koichi Shibukawa, Yukio Sato, Yoshinori Kawaharazaki, Yasuhiro Fujita | 2013-04-02 |
| 8401817 | Velocity detection device and servomotor | — | 2013-03-19 |
| 8271221 | Phase detection device and position detection device | — | 2012-09-18 |
| 8019037 | Phase difference detection device and rotation position detection device | — | 2011-09-13 |
| 5915213 | Transmitter apparatus with linearizing circuit to compensate for distortion in power amplifier | Masanori Iwatsuki, Kouichi Hayasaka, Yasuhiro Shibuya | 1999-06-22 |
| 5151676 | Film resistance terminator | — | 1992-09-29 |