Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8701473 | End-of-life estimation device for air cleaner | — | 2014-04-22 |
| 8459607 | Control device and control method for control valve | Yuji Sasaki | 2013-06-11 |
| 6926750 | Filter element | Seiichi Tanaka, Akira Terasaki, Tatsuya Sagano, Hiroto Koura, Tsumoru Okada +2 more | 2005-08-09 |