Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5064529 | Apparatus for testing membrane filters | Shigemitsu Hirayama, Takamichi Akashi, Isao Sasaki, Hiroshi Fukuda | 1991-11-12 |
| D315290 | Anchor fastener | — | 1991-03-12 |
| 4872974 | Apparatus for testing membrane filters, and for sterilizing liquids with use of membrane filter | Shigemitsu Hirayama, Takamichi Akashi, Isao Sasaki, Hiroshi Fukuda | 1989-10-10 |