Daniel J. Dempsey
45Patents
17h-index
29Co-inventors
81Inventor score
Filing activity: Nov 18, 1980 → Jan 18, 2021
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6155341A | Continuous fan adjustment method | Emerging Cross-Sectional Technologies | 74 | Expired |
| US4729207A | Excess air control with dual pressure switches | Mechanical Engineering; Lighting; Heating | 69 | Expired |
| US6851948B2 | System and method for draft safeguard | Mechanical Engineering; Lighting; Heating | 58 | Expired |
| US6390806B1 | Pneumatic system for flame rollout and draft safeguard protection | Mechanical Engineering; Lighting; Heating | 55 | Expired |
| US4603680A | Furnace inducer outlet box assembly | Emerging Cross-Sectional Technologies | 41 | Expired |
| US6283115A | Modulating furnace having improved low stage characteristics | Mechanical Engineering; Lighting; Heating | 41 | Expired |
| US4703747A | Excess air control | Mechanical Engineering; Lighting; Heating | 38 | Expired |
| US6321744A | Modulating furnace having a low stage with an improved fuel utilization efficiency | Emerging Cross-Sectional Technologies | 35 | Expired |
| US4789330A | Gas furnace control system | Mechanical Engineering; Lighting; Heating | 29 | Expired |
| US4962749A | Method of operating a natural gas furnace with propane | Mechanical Engineering; Lighting; Heating | 28 | Expired |
| US5379752A | Low speed interlock for a two stage two speed furnace | Mechanical Engineering; Lighting; Heating | 26 | Expired |
| US4815524A | Control system for a furnace operating in the continuous blower mode | Emerging Cross-Sectional Technologies | 25 | Expired |
| US4891004A | Control of energy use in a furnace | Mechanical Engineering; Lighting; Heating | 24 | Expired |
| US5024379A | Variable capacity heating appliance | Physics | 23 | Expired |
| US6161535A | Method and apparatus for preventing cold spot corrosion in induced-draft gas-fired furnaces | Mechanical Engineering; Lighting; Heating | 20 | Expired |
| US4896411A | Method of making a multiple cell condensing heat exchanger | Emerging Cross-Sectional Technologies | 17 | Expired |
| US4401425A | Safety switch for a combustion system | Mechanical Engineering; Lighting; Heating | 17 | Expired |
| US6021775A | Mobile home furnace | Mechanical Engineering; Lighting; Heating | 16 | Expired |
| US5522541A | Method for proving furnace high-heat pressure switch | Mechanical Engineering; Lighting; Heating | 14 | Expired |
| US5326025A | Warm up method for two stage furnace | Emerging Cross-Sectional Technologies | 14 | Expired |
| US5878741A | Differential pressure modulated gas valve for single stage combustion control | Mechanical Engineering; Lighting; Heating | 11 | Expired |
| US10215438B2 | System and method of determining a limit fault in an HVAC unit | Mechanical Engineering; Lighting; Heating | 3 | Active |
| US9103560B2 | Furnace vent with water-permeable inner pipe | Mechanical Engineering; Lighting; Heating | 3 | Active |
| US11134146B2 | User preference utilization in remote applications | Electricity | 3 | Active |
| US10222085B2 | Energy recovery ventilator with reduced power consumption | Mechanical Engineering; Lighting; Heating | 2 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.