Douglas D. Bird
25Patents
11h-index
23Co-inventors
75Inventor score
Filing activity: Mar 27, 1990 → Sep 27, 2019
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4991770A | Thermostat with means for disabling PID control | Physics | 117 | Expired |
| US6261087A | Pilot flame powered burner controller with remote control operation | Emerging Cross-Sectional Technologies | 70 | Expired |
| US6959876B2 | Method and apparatus for safety switch | Mechanical Engineering; Lighting; Heating | 47 | Expired |
| US6881055B2 | Temperature controlled burner apparatus | Mechanical Engineering; Lighting; Heating | 31 | Expired |
| US5025984A | Setback thermostat with recovery start time selected non-linearly | Physics | 30 | Expired |
| US7804047B2 | Temperature sensor diagnostic for determining water heater health status | Electricity | 29 | Expired |
| US7170762B2 | Low voltage DC-DC converter | Electricity | 22 | Expired |
| US8245987B2 | Mounting bracket for use with a water heater | Mechanical Engineering; Lighting; Heating | 21 | Active |
| US8123518B2 | Burner firing rate determination for modulating furnace | Mechanical Engineering; Lighting; Heating | 18 | Active |
| US7485153B2 | Fluid free interface for a fluidic analyzer | Physics | 17 | Active |
| US5361983A | Method of maximizing the efficiency of an environmental control system including a programmable thermostat | Physics | 12 | Expired |
| US9494320B2 | Method and system for starting an intermittent flame-powered pilot combustion system | Mechanical Engineering; Lighting; Heating | 9 | Active |
| US5744973A | Resistance to frequency circuit for measuring ambient temperature on a thermostat | Physics | 7 | Expired |
| US6346789B1 | Motor step-less speed control with active feedback of phase detector | Emerging Cross-Sectional Technologies | 6 | Expired |
| US8764435B2 | Burner firing rate determination for modulating furnace | Mechanical Engineering; Lighting; Heating | 6 | Active |
| US10208954B2 | Method and system for controlling an ignition sequence for an intermittent flame-powered pilot combustion system | Mechanical Engineering; Lighting; Heating | 5 | Active |
| US6428308B1 | Electronic fuel convertibility selection | Mechanical Engineering; Lighting; Heating | 5 | Expired |
| US5757195A | Humidity sensing circuit | Physics | 5 | Expired |
| US7741941B2 | Dual armature solenoid valve assembly | Electricity | 4 | Active |
| US9316413B2 | Selectable efficiency versus comfort for modulating furnace | Emerging Cross-Sectional Technologies | 4 | Active |
| US10429068B2 | Method and system for starting an intermittent flame-powered pilot combustion system | Mechanical Engineering; Lighting; Heating | 2 | Active |
| US10337747B2 | Selectable efficiency versus comfort for modulating furnace | Emerging Cross-Sectional Technologies | 2 | Active |
| US6280179A | Over temperature limiting scheme by reducing gas pressure | Mechanical Engineering; Lighting; Heating | 1 | Expired |
| US11268695B2 | Method and system for starting an intermittent flame-powered pilot combustion system | Mechanical Engineering; Lighting; Heating | 0 | Active |
| US11719436B2 | Method and system for controlling an ignition sequence for an intermittent flame-powered pilot combustion system | Mechanical Engineering; Lighting; Heating | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.