Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11835466 | Diamond clarity measurement process and system | Ka Wing Cheng, Kong CHAN, Juan CHENG, Wing Chi TANG, Koon Chung HUI | 2023-12-05 |
| 11016033 | Diamond clarity measurement process and system | Ka Wing Cheng, Kong CHAN, Juan CHENG, Wing Chi TANG, Koon Chung HUI | 2021-05-25 |
| 10762666 | Colour grading process and system for diamonds | Ka Wing Cheng, Kong CHAN, Juan CHENG, Wing Chi TANG, Koon Chung HUI | 2020-09-01 |