Richard S. Davis
23Patents
10h-index
21Co-inventors
75Inventor score
Filing activity: Sep 10, 1975 → Feb 2, 2017
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5557887A | Yieldable gearing and safety mechanisms for garage door operators | Electricity | 51 | Expired |
| US5471099A | Modular enclosure apparatus | Electricity | 50 | Expired |
| US5973591A | Electronic signaling system | Physics | 43 | Expired |
| US5251856A | Model train controller for reversing unit | Human Necessities | 33 | Expired |
| US5105784A | Rotary valve and system for duration and phase control | Emerging Cross-Sectional Technologies | 32 | Expired |
| US4991547A | Intake port pressure control system for engine induction system | Emerging Cross-Sectional Technologies | 19 | Expired |
| US4986225A | Intake reservoir system for an engine having a check valve | Emerging Cross-Sectional Technologies | 16 | Expired |
| US7805343B1 | Method and apparatus for managing tax return preparation | Physics | 12 | Active |
| US5138874A | Diagnostic system for detecting faults in engine air intake check valves | Emerging Cross-Sectional Technologies | 11 | Expired |
| US7386507B2 | Loan program and process for transacting the same | Physics | 10 | Active |
| US5018486A | Pressure relief system for a check valve | Emerging Cross-Sectional Technologies | 9 | Expired |
| US4751414A | Dynamic braking circuit for universal motor | Electricity | 9 | Expired |
| US4383813A | Pasta extruder apparatus | Human Necessities | 8 | Expired |
| US5129367A | Intermittent bypass system for a check valve | Emerging Cross-Sectional Technologies | 6 | Expired |
| US4131949A | Word processor apparatus having means for recording a tab function as a signal indicative of the number of spaces tabbed | Physics | 6 | Expired |
| US7975663B2 | Dual-equal cam phasing with variable overlap | Mechanical Engineering; Lighting; Heating | 2 | Active |
| US8550051B2 | Engine combustion chamber features for camshaft with differential valve lift | Emerging Cross-Sectional Technologies | 2 | Active |
| US9127604B2 | Control system and method for preventing stochastic pre-ignition in an engine | Emerging Cross-Sectional Technologies | 1 | Active |
| US8397686B2 | Engine intake port arrangement for camshaft with differential valve lift | Mechanical Engineering; Lighting; Heating | 1 | Active |
| US10626812B2 | Internal combustion engine employing a dedicated-cylinder EGR system | Emerging Cross-Sectional Technologies | 1 | Active |
| US7530337B1 | High overlap camshaft for improved engine efficiency | Emerging Cross-Sectional Technologies | 0 | Active |
| US8781710B2 | Compression ratio determination and control systems and methods | Mechanical Engineering; Lighting; Heating | 0 | Active |
| US8235019B2 | Engine having concentric camshaft with differential valve lift | Mechanical Engineering; Lighting; Heating | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.