Issued Patents All Time
Showing 26–32 of 32 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4622166 | Process for preparation of zeolite slurry excellent in static stability and dynamic stability | Tadahisa Nakazawa, Koichi Usui, Kiyoshi Abe, Takashi Tokita | 1986-11-11 |
| 4544604 | Heat-sensitive recording paper and filler therefor | Koichi Usui, Kunio Goto, Teiji Sato, Masanori Tanaka, Seikichi Takahashi +2 more | 1985-10-01 |
| 4509064 | Heat-sensitive recording paper and filler therefor | Koichi Usui, Kunio Goto, Teiji Sato, Masanori Tanaka, Seikichi Takahashi +2 more | 1985-04-02 |
| 4420419 | Abrasion-resistant granular zeolite and process for preparation thereof | Tetsuo Masuko, Kunio Goto, Hideo Sugai, Masao Takahashi | 1983-12-13 |
| 4405371 | Novel clay mineral color developer for pressure sensitive recording paper and process for producing same | Yujiro Sugahara, Koichi Usui, Teiji Sato, Yasuo Mizoguchi, Seiji Kojima | 1983-09-20 |
| 4238346 | Detergent builders and process for preparation thereof | Yujiro Sugahara, Koichi Usui, Hideaki Kurosaki, Shigehisa Imafuku | 1980-12-09 |
| 4219535 | Alkali metal aluminosilicate detergent builder | Yujiro Sugahara, Koichi Usui, Hideaki Kurosaki, Shigehisa Imafuku | 1980-08-26 |