Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8459973 | Vane pump having an oil supply passage communicating with a gas passage in the stopping state | Ryuichi Sakakibara, Kiyotaka Ohtahara, Yoshimasa Kuno | 2013-06-11 |
| 8449277 | Vane pump having a passage area ratio between an oil supply passage area and a gas passage area | Ryuichi Sakakibara, Kiyotaka Ohtahara, Yoshimasa Kuno | 2013-05-28 |
| 8382462 | Vane pump with circulating oil supply passage | Yoshinobu Kishi, Kiyotaka Ohtahara | 2013-02-26 |
| 8267678 | Vane type vacuum pump | Kiyotaka Ohtahara, Naoto Noguchi | 2012-09-18 |
| 7896631 | Vane pump | Yoshinobu Kishi, Kiyotaka Ohtahara | 2011-03-01 |
| 7588433 | Vane pump | Yoshinobu Kishi, Kiyotaka Ohtahara | 2009-09-15 |