| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Australia | 1 | |
| #2 | Canada | 1 | |
| #3 | Denmark | 1 | |
| #4 | EPO (European Patent Office) | 1 | |
| #5 | Indonesia | 1 | |
| #6 | Israel | 1 | |
| #7 | Norway | 1 | |
| #8 | African Intellectual Property Organization | 1 | |
| #9 | Sweden | 1 | |
| #10 | Singapore | 1 | |
| #11 | United States | 1 | |
| #12 | WIPO (World Intellectual Property Organization) | 1 | |
| #13 | South Africa | 1 |
| # | Industry | |
|---|---|---|
| #1 | Electrical machinery and energy | |
| #2 | Environmental technology | |
| #3 | Transport |
| # | Name | Total Patents |
|---|---|---|
| #1 | Koh Chwee Guan | 11 |
| #2 | Guan Koh Chwee | 1 |
| Publication | Filing date | Title |
|---|---|---|
| ZA200006024B | Improved electrical socket and plug. | |
| AU3341100A | Improved electrical socket and plug | |
| SG72978A1 | Improved electrical socket |