| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 16 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Thermal processes | |
| #3 | Chemical engineering | |
| #4 | Machines | |
| #5 | Environmental technology |
| # | Technology | |
|---|---|---|
| #1 | Air-conditioning | |
| #2 | Doors and windows | |
| #3 | Separation | |
| #4 | Shaping of plastics | |
| #5 | Structural elements | |
| #6 | Climate change mitigation in buildings | |
| #7 | Heat-exchange device details |
| # | Name | Total Patents |
|---|---|---|
| #1 | Crittenden Jerry G | 16 |
| Publication | Filing date | Title |
|---|---|---|
| US10337238B1 | Exterior ventilator door for receiving outdoor air | |
| US10012408B1 | Exterior ventilator door for receiving outdoor air | |
| US10301869B1 | Hollow core door for preventing pressure build up having a prefabricated center panel and method of making the door | |
| US10156091B1 | Margin air flow door for preventing pressure build up | |
| US9085933B1 | Hollow core door with scrubbers for cleaning inner air flow |