| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Hong Kong | 3 | |
| #2 | Australia | 1 | |
| #3 | Brazil | 1 | |
| #4 | Canada | 1 | |
| #5 | EPO (European Patent Office) | 1 | |
| #6 | New Zealand | 1 | |
| #7 | Singapore | 1 | |
| #8 | Taiwan | 1 | |
| #9 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Thermal processes |
| # | Technology | |
|---|---|---|
| #1 | Pipes | |
| #2 | Domestic heating systems |
| # | Name | Total Patents |
|---|---|---|
| #1 | Chan Alfred Wing Kin | 7 |
| #2 | Siu Philip Kam Shing | 1 |
| #3 | Sham Man Fai | 1 |
| #4 | Cheung Pak Kin | 1 |
| #5 | Alfred Wing Kin Chan | 1 |
| #6 | Siu Philip K S | 1 |
| Publication | Filing date | Title |
|---|---|---|
| HK1067928A2 | Gas burner. | |
| HK1048728A2 | Dust suction device for handheld power tool | |
| US6761379B1 | Pipe fittings | |
| AU2001100497A4 | Pipe fittings | |
| CA2359498A1 | Pipe fittings | |
| TW473606B | A heating apparatus | |
| HK1031171A2 | Pipe fittings |