Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4375373 | Method of coating inorganic pigments (ultramarine and bronze powder) with dense amorphous silica | Nobuyoshi Abe, Minoru Yokoyama | 1983-03-01 |
| 4334933 | Process for preparing stable inorganic pigment | Nobuyoshi Abe, Syozo Takatsu, Minoru Yokoyama | 1982-06-15 |