Issued Patents All Time
Showing 26–26 of 26 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4824654 | Process of producing needle-shaped calcium carbonate particles | Yoshio Ota, Iwao Motoyama, Tetsushi Iwashita, Kunio Nomura | 1989-04-25 |
Showing 26–26 of 26 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4824654 | Process of producing needle-shaped calcium carbonate particles | Yoshio Ota, Iwao Motoyama, Tetsushi Iwashita, Kunio Nomura | 1989-04-25 |