Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11840472 | Elongation method and preform for producing an optical glass component | Qiulin Ma, Kai Huei Chang | 2023-12-12 |
| 11811453 | Upward collapse process and apparatus for making glass preforms | Qiulin Ma, Kai Huei Chang, James E. Beavers, Jr., Carl W. Ponader | 2023-11-07 |
| 11618708 | Elongation method and preform for producing an optical glass component | Qiulin Ma, Kai Huei Chang | 2023-04-04 |
| 11454580 | Method for preform or tube drawing based on its viscosity | Georges Levon FATTAL, James E. Beavers, Jr., Kai Huei Chang, Qiulin Ma | 2022-09-27 |
| 11405107 | Upward collapse process and apparatus for making glass preforms | Qiulin Ma, Kai Huei Chang, James E. Beavers, Jr., Carl W. Ponader | 2022-08-02 |
| 10388028 | Apparatus and method for measurement of transparent cylindrical articles | Qiulin Ma, James E. Beavers, Jr. | 2019-08-20 |