Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4834700 | Method of and apparatus for forming filter element | Naohiko Kondo, Mineo Hanai, Ikuo Mochizuki, Yuji Ito, Takatoshi Iwase | 1989-05-30 |
| 4298643 | Fiber sheet for forming | Takeshi Mitomi | 1981-11-03 |