Joseph A. Pietsch
9Patents
7h-index
4Co-inventors
56Inventor score
Filing activity: Nov 2, 1977 → Apr 30, 2001
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4336692A | Dual source heat pump | Emerging Cross-Sectional Technologies | 66 | Expired |
| US5964101A | Energy transfer system for refrigerator/freezer components | Emerging Cross-Sectional Technologies | 27 | Expired |
| US4320630A | Heat pump water heater | Mechanical Engineering; Lighting; Heating | 20 | Expired |
| US4138859A | Split heat pump outdoor fan arrangement | Emerging Cross-Sectional Technologies | 11 | Expired |
| US6230514A | Energy transfer system for refrigerator freezer components | Emerging Cross-Sectional Technologies | 10 | Expired |
| US6463755B2 | Energy transfer system for refrigerator/freezer components | Emerging Cross-Sectional Technologies | 10 | Expired |
| US5816063A | Energy transfer system for refrigerator/freezer components | Mechanical Engineering; Lighting; Heating | 9 | Expired |
| US5937662A | Energy transfer system for refrigerator/freezer components | Mechanical Engineering; Lighting; Heating | 6 | Expired |
| US5904051A | Energy transfer system for refrigeration/freezer components | Mechanical Engineering; Lighting; Heating | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.