Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5417889 | Method for preparing filter aid for analytical use | Masahiro Kida, Shoichi Hamada | 1995-05-23 |
| 5225276 | Filter aid for analytical use and method for preparing the same | Masahiro Kida, Shoichi Hamada | 1993-07-06 |