Issued Patents 2022
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11454580 | Method for preform or tube drawing based on its viscosity | Georges Levon FATTAL, Kai Huei Chang, Evan P. Green, Qiulin Ma | 2022-09-27 |
| 11405107 | Upward collapse process and apparatus for making glass preforms | Qiulin Ma, Kai Huei Chang, Evan P. Green, Carl W. Ponader | 2022-08-02 |