Gregory E. Sparks
14Patents
8h-index
24Co-inventors
72Inventor score
Filing activity: Feb 8, 1978 → Jul 13, 2021
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5012415A | Control system calibration | Human Necessities | 35 | Expired |
| US4931967A | Control system calibration | Human Necessities | 32 | Expired |
| US4799645A | Pilot operated hydraulic control valve | Mechanical Engineering; Lighting; Heating | 24 | Expired |
| US4419642A | Solenoid with saturable element | Electricity | 13 | Expired |
| US6504474B1 | Method and apparatus for detecting a restricted or bypassed transmission oil filter | Emerging Cross-Sectional Technologies | 13 | Expired |
| US4177723A | Compactor device for large round bales | Human Necessities | 12 | Expired |
| US4523494A | Steering pressure responsive differential lock control system | Performing Operations; Transporting | 10 | Expired |
| US7401465B2 | Dual pump dual pressure hydraulic circuit | Mechanical Engineering; Lighting; Heating | 9 | Active |
| US7707912B1 | Disposable oil filter wrench | Performing Operations; Transporting | 7 | Active |
| US5201174A | Auxiliary hydraulic pump system | Performing Operations; Transporting | 7 | Expired |
| USD1020752S1 | Modular biometric station | General | 2 | Active |
| USD1020750S1 | Modular biometric station | General | 0 | Active |
| USD1020751S1 | Modular biometric station | General | 0 | Active |
| US11868456B2 | Modular biometric station with cohesive form factor | Electricity | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.