| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Japan | 4 | |
| #2 | United States | 4 | |
| #3 | EPO (European Patent Office) | 3 | |
| #4 | Republic of Korea | 3 | |
| #5 | Taiwan | 3 | |
| #6 | Australia | 2 | |
| #7 | United Kingdom | 2 | |
| #8 | Hong Kong | 2 | |
| #9 | China | 1 | |
| #10 | India | 1 |
| # | Industry | |
|---|---|---|
| #1 | Electrical machinery and energy | |
| #2 | Packaging and shipping | |
| #3 | Consumer goods | |
| #4 | Machines |
| # | Name | Total Patents |
|---|---|---|
| #1 | So Kam Wah | 13 |
| #2 | Wong Michael Pong Kei | 5 |
| #3 | So Kam W | 1 |
| #4 | Wong Pong Kei | 1 |
| #5 | Wong Pong Kei Michael | 1 |
| #6 | So Kam-Wah | 1 |
| #7 | Wah So Kam | 1 |
| Publication | Filing date | Title |
|---|---|---|
| KR20080065248A | Universal power adapter/converter | |
| EP1845590A1 | Universal battery charger and/or power adaptor | |
| US7273384B1 | Universal battery charger and/or power adaptor | |
| GB0300098D0 | Electrical adaptor | |
| GB9820563D0 | Electronic power converter having light dimmer function |