James E. Stangroom
17Patents
10h-index
6Co-inventors
65Inventor score
Filing activity: Jul 7, 1975 → Dec 17, 1998
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4444298A | Viscous shear clutch | Mechanical Engineering; Lighting; Heating | 48 | Expired |
| US5626768A | Sterilization of opaque liquids with ultraviolet radiation | Chemistry; Metallurgy | 30 | Expired |
| US4129513A | Electric field responsive fluids | Chemistry; Metallurgy | 30 | Expired |
| US4033892A | Electric field responsive fluids | Chemistry; Metallurgy | 28 | Expired |
| US4812251A | Electro-rheological fluids/electric field responsive fluids | Chemistry; Metallurgy | 17 | Expired |
| US4532853A | Fluid-powered actuators | Emerging Cross-Sectional Technologies | 16 | Expired |
| US4664236A | Electrically controlled, progressive, frictional, torque transmitting device | Mechanical Engineering; Lighting; Heating | 16 | Expired |
| US4502973A | Electroviscous fluids | Chemistry; Metallurgy | 14 | Expired |
| US5516235A | Method and apparatus of raising objects from the sea bed | Performing Operations; Transporting | 10 | Expired |
| US4483788A | Electric field responsive fluids | Chemistry; Metallurgy | 10 | Expired |
| US5409354A | Variable displacement pump | Emerging Cross-Sectional Technologies | 7 | Expired |
| US4493615A | Electro-rheological transducer | Mechanical Engineering; Lighting; Heating | 7 | Expired |
| US4342334A | Hydraulic servo valve | Emerging Cross-Sectional Technologies | 6 | Expired |
| US5356269A | Variable displacement pump | Emerging Cross-Sectional Technologies | 3 | Expired |
| US5826533A | Twin-hulled boat | Performing Operations; Transporting | 2 | Expired |
| US6272852A | High speed actuators and vibrators based on electro-rheological fluids | Mechanical Engineering; Lighting; Heating | 0 | Expired |
| US5106522A | Fluid compositions | Electricity | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.