Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6589475 | Lining material for glass melting furnaces, glass melting furnaces, process for producing glass products, and process for purifying the lining material | Tadakazu Hidai | 2003-07-08 |
| 6401493 | Lining material for glass melting furnaces, glass melting furnaces, process for producing glass products, and process for purifying the lining material | Tadakazu Hidai | 2002-06-11 |
| 6250111 | Lining material for glass melting furnaces, glass melting furnaces, process for producing glass products, and process for purifying the lining material | Tadakazu Hidai | 2001-06-26 |