Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4298386 | Calcium silicate and process for producing same | Kazuhiko Kubo, Akira Takahashi | 1981-11-03 |
| 4295893 | Alumina-containing calcium silicate and process for producing same | Akira Takahashi | 1981-10-20 |