Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6546753 | Method of producing an alkali-free glass | Toshiharu Narita, Shinkichi Miwa, Shigeru Yamamoto | 2003-04-15 |
| 6508083 | Alkali-free glass and method for producing the same | Toshiharu Narita, Shinkichi Miwa, Shigeru Yamamoto | 2003-01-21 |