Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4626420 | Synthetic fraipontite and process for preparation thereof | Koichi Usui, Teiji Sato, Masanori Tanaka, Noriyuki Takahashi | 1986-12-02 |
| 4405371 | Novel clay mineral color developer for pressure sensitive recording paper and process for producing same | Yujiro Sugahara, Koichi Usui, Masahide Ogawa, Teiji Sato, Seiji Kojima | 1983-09-20 |