Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5007964 | Calcium carbonate, calcium carbonate pigment, process for preparing same, coating composition for information recording paper and information recording paper | Ryogo Tsukisaka, Satoshi Kondo, Takashi Deguchi | 1991-04-16 |