Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8707738 | Glass-melting furnace, process for producing molten glass, apparatus for producing glass products and process for producing glass products | Osamu Sakamoto, Seiji Miyazaki, Satoru Ohkawa | 2014-04-29 |
| 8573007 | Process for producing molten glass, glass-melting furnace, process for producing glass products and apparatus for producing glass products | Osamu Sakamoto, Seiji Miyazaki, Satoru Ohkawa, Takahiro Murakami | 2013-11-05 |
| 8544298 | Glass-melting furnace, process for producing molten glass, apparatus for producing glass products and process for producing glass products | Osamu Sakamoto, Seiji Miyazaki, Satoru Ohkawa | 2013-10-01 |
| 5851258 | Backup structure for a pipe for feeding a molten substance of high temperature | Hiroshi Ando, Fumiaki Saito, Shinji Takeshita, Koji Hirasawa, Sei Nagano +2 more | 1998-12-22 |
| 5849058 | Refining method for molten glass and an apparatus for refining molten glass | Shinji Takeshita, Kazuhiko Ishimura | 1998-12-15 |
| 4985375 | Glass-ceramic article and method for its production | Setsuro Ito, Yasumasa Nakao, Kei Maeda | 1991-01-15 |