Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4767394 | Method for making axial-flow filters and apparatus therefor | Yuuji Ito, Tadahiko Shibata, Masahiko Sakai | 1988-08-30 |
| 4659323 | Method for making axial-flow filters and apparatus therefor | Yuuji Ito, Tadahiko Shibata, Masahiko Sakai, Yukio Ota, Naohiko Kondo | 1987-04-21 |