| # | Country | Total Patents | |
|---|---|---|---|
| #1 | China | 4 | |
| #2 | United Kingdom | 3 | |
| #3 | WIPO (World Intellectual Property Organization) | 3 | |
| #4 | Taiwan | 2 | |
| #5 | Australia | 1 | |
| #6 | Canada | 1 | |
| #7 | EPO (European Patent Office) | 1 | |
| #8 | Indonesia | 1 | |
| #9 | Malaysia | 1 | |
| #10 | Singapore | 1 | |
| #11 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Engines, pumps and turbines | |
| #2 | Thermal processes | |
| #3 | Chemical engineering | |
| #4 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Non-positive-displacement pumps | |
| #2 | Air-conditioning | |
| #3 | Separation | |
| #4 | Venting or aerating devices |
| # | Name | Total Patents |
|---|---|---|
| #1 | Lee Zong Tang | 13 |
| #2 | Tang Lee Zong | 5 |
| #3 | Zong-Tang Lee | 1 |
| Publication | Filing date | Title |
|---|---|---|
| TW571062B | Fan unit | |
| TW422921B | A fan unit | |
| CN1328620A | Apparatus for minimising noise in fan unit | |
| MY123023A | Apparatus for minimising noise in a fan unit | |
| CN1249406A | Fan wheel | |
| WO0019106A1 | Fan wheels | |
| US6030186A | Method and apparatus for minimizing noise from fan filter unit | |
| CN1160801A | Set of parts | |
| SG45411A1 | A set of parts | |
| GB8601885D0 | Damper for air conditioning |