Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6230900 | Filter assembly and process for producing the same | Toshimi Hara, Hiroshi Morikawa | 2001-05-15 |
| 5538633 | Filter apparatus having a casing with improved structure for holding filter media | Kyoji Kitajima, Shunichi Nogami, Hiroaki Yamashita, Naomi Muramatsu | 1996-07-23 |