Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5064529 | Apparatus for testing membrane filters | Shigemitsu Hirayama, Akio Ikuta, Isao Sasaki, Hiroshi Fukuda | 1991-11-12 |
| 4872974 | Apparatus for testing membrane filters, and for sterilizing liquids with use of membrane filter | Shigemitsu Hirayama, Akio Ikuta, Isao Sasaki, Hiroshi Fukuda | 1989-10-10 |