Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5637271 | Method of producing non-woven fabrics for use in filters | Makoto Suzuki, Hidetoshi Takeuchi | 1997-06-10 |
| 5609947 | Laminated non-woven fabric filtering medium and method for producing same | Hidetoshi Takeuchi, Makoto Suzuki | 1997-03-11 |