Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4818731 | Colored frit and method for manufacturing of artificial stone | Toyonobu Mizutani, Masao Yoshizawa | 1989-04-04 |
| 4767725 | Crystallized glass-ceramic molded product and method of manufacturing | Toyonobu Mizutani, Masao Yoshizawa | 1988-08-30 |
| 4246009 | Smoke filter material and use thereof | Hideo Sawada, Motoharu Kotani, Koji Sato, Ken-ichiro Sugimori, Akisato Katanosaka | 1981-01-20 |