| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 11 | |
| #2 | WIPO (World Intellectual Property Organization) | 4 | |
| #3 | China | 3 | |
| #4 | Brazil | 2 | |
| #5 | Canada | 2 | |
| #6 | Hong Kong | 2 | |
| #7 | Israel | 2 | |
| #8 | Australia | 1 | |
| #9 | Costa Rica | 1 | |
| #10 | Mexico | 1 |
| # | Industry | |
|---|---|---|
| #1 | Thermal processes | |
| #2 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Refrigerators | |
| #2 | Venting or aerating devices |
| # | Name | Total Patents |
|---|---|---|
| #1 | Wightman David A | 20 |
| #2 | Wightman D A | 3 |
| #3 | David A Wightman | 2 |
| #4 | Wightsman David A | 1 |
| #5 | Wightman David | 1 |
| Publication | Filing date | Title |
|---|---|---|
| HK1044366A1 | Vapor compression system and method | |
| US6857281B2 | Expansion device for vapor compression system | |
| US6389825B1 | Evaporator coil with multiple orifices | |
| US6393851B1 | Vapor compression system | |
| US6401470B1 | Expansion device for vapor compression system | |
| WO0042364A1 | Vapor compression system and method | |
| US6185958B1 | Vapor compression system and method | |
| US6314747B1 | Vapor compression system and method |