Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4375373 | Method of coating inorganic pigments (ultramarine and bronze powder) with dense amorphous silica | Kiyoshi Kanemaru, Minoru Yokoyama | 1983-03-01 |
| 4334933 | Process for preparing stable inorganic pigment | Syozo Takatsu, Kiyoshi Kanemaru, Minoru Yokoyama | 1982-06-15 |
| 4302396 | Chlorinated 4-methylphthalic anhydrides | Michihiro Tsujimoto, Tsutomu Nishizawa, Kiyoharu Hasegawa | 1981-11-24 |