| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 12 | |
| #2 | Australia | 6 | |
| #3 | United Kingdom | 5 |
| # | Industry | |
|---|---|---|
| #1 | Environmental technology | |
| #2 | Machines | |
| #3 | Thermal processes | |
| #4 | Mechanical elements | |
| #5 | Civil engineering |
| # | Name | Total Patents |
|---|---|---|
| #1 | Hopper Thomas P | 10 |
| #2 | Barber Jr Everett M | 7 |
| #3 | Barber E M | 2 |
| #4 | Barber Everett M Jr | 2 |
| #5 | Hopper T P | 1 |
| #6 | Clark Peter D | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US4366807A | Natural circulation solar heat collection and storage system | |
| US4278076A | Solar collector of a liquid heat exchange type | |
| US4214575A | Solar energy collector | |
| US4216764A | Solar energy collector system including apparatus for balancing heat-exchange fluid flow | |
| US4270516A | Solar energy collector | |
| US4147156A | Solar energy collector having a convection current inhibiting member | |
| US4131111A | Solar energy collector | |
| US4123883A | Solar energy collector | |
| US4098259A | Solar energy collection system | |
| US4034738A | Solar heating system | |
| US3980071A | Solar energy collector |