| # | Country | Total Patents | |
|---|---|---|---|
| #1 | WIPO (World Intellectual Property Organization) | 3 | |
| #2 | Australia | 2 | |
| #3 | Singapore | 2 | |
| #4 | United States | 2 | |
| #5 | Brazil | 1 | |
| #6 | EPO (European Patent Office) | 1 | |
| #7 | United Kingdom | 1 | |
| #8 | Republic of Korea | 1 | |
| #9 | Saudi Arabia | 1 | |
| #10 | Taiwan | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Thermal processes |
| # | Technology | |
|---|---|---|
| #1 | Doors and windows | |
| #2 | Air-conditioning | |
| #3 | Fire-fighting |
| # | Name | Total Patents |
|---|---|---|
| #1 | Wong Lok Yung | 14 |
| #2 | Yung Wong Lok | 1 |
| Publication | Filing date | Title |
|---|---|---|
| SG168445A1 | Insulated fire shutter | |
| SG152936A1 | Louvred shutter | |
| BR0318545A | roller shutter enhancements |