| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Hong Kong | 4 | |
| #2 | United States | 3 | |
| #3 | China | 2 | |
| #4 | Canada | 1 | |
| #5 | Germany | 1 | |
| #6 | EPO (European Patent Office) | 1 | |
| #7 | WIPO (World Intellectual Property Organization) | 1 |
| # | Industry | |
|---|---|---|
| #1 | Optics | |
| #2 | Machine tools | |
| #3 | Materials and metallurgy |
| # | Technology | |
|---|---|---|
| #1 | Cameras | |
| #2 | Grinding or polishing devices | |
| #3 | Treatment of glass | |
| #4 | Soldering, welding and flame cutting |
| # | Name | Total Patents |
|---|---|---|
| #1 | Yim Wai Lam William | 11 |
| #2 | Yan Huilin | 1 |
| #3 | William Yim Wai Lam | 1 |
| Publication | Filing date | Title |
|---|---|---|
| CN103539343A | Mixed machining method for colored glass | |
| US2011211820A1 | User-configurable waterproof camera case | |
| US2009317069A1 | User-configurable waterproof camera case |