Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10328370 | Non-woven filtration material and air cleaner element | Shota Umemoto | 2019-06-25 |
| 6926750 | Filter element | Seiichi Tanaka, Akira Terasaki, Tatsuya Sagano, Hideyo Uehara, Hiroto Koura +2 more | 2005-08-09 |
| 6818037 | Filter element | Seiichi Tanaka, Kazutaka Yokoyama, Hiroto Koura, Tsumoru Okada | 2004-11-16 |