Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7338599 | Filtration systems and fitting arrangements for filtration systems | Hajime Hiranga, Itoh Hiromichi | 2008-03-04 |
| D465258 | Filter element | Hajime Hiranaga, Hisayuki Kataoka | 2002-11-05 |
| D456485 | Filter element | Hajime Hiranaga, Hisayuki Kataoka | 2002-04-30 |