Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12319615 | Float glass substrate | — | 2025-06-03 |
| 12017953 | Alkali-free glass | Hirofumi TOKUNAGA, Kazutaka Ono | 2024-06-25 |
| 11718553 | Alkali-free glass substrate | Takashi Enomoto | 2023-08-08 |
| 11584680 | Alkali-free glass substrate | Takashi Enomoto | 2023-02-21 |
| 11053160 | Alkali-free glass | Hirofumi TOKUNAGA, Kazutaka Ono | 2021-07-06 |
| 10974986 | Alkali-free glass substrate | Takashi Enomoto | 2021-04-13 |
| 10730786 | Alkali-free glass and method for producing the same | Hirofumi TOKUNAGA, Kazutaka Ono | 2020-08-04 |
| 7008891 | Crystallized glass for optical filter substrate, and optical filter | Tomoyuki Kobayashi, Kei Maeda | 2006-03-07 |