Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D1060530 | Toy model | — | 2025-02-04 |
| D1018718 | Toy model | — | 2024-03-19 |
| 11543234 | Measurement method for geometric errors of numerical control turntable based on four-station laser tracer system | Jun Zha, Lin Han | 2023-01-03 |
| 10967475 | Polishing method for optical elements | Chuan Zhang, Xiaoyan Chen, Jun Zha | 2021-04-06 |
| 6733369 | Method and apparatus for polishing or lapping an aspherical surface of a work piece | Siegfried Stacklies | 2004-05-11 |
| 5235959 | Arrangement and method for regenerating rotating precision grinding tools | Heinz Frank, Holger Fiedler | 1993-08-17 |