James B. Stephens
28Patents
14h-index
11Co-inventors
78Inventor score
Filing activity: Jun 20, 1974 → Nov 16, 1999
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4952046A | Optical lenses with selective transmissivity functions | Physics | 65 | Expired |
| US4226475A | Underground mineral extraction | Fixed Constructions | 47 | Expired |
| US4242201A | By-pass water softener system and installation | Chemistry; Metallurgy | 30 | Expired |
| USRE38402E1 | Optical lenses with selective transmissivity functions | General | 26 | Expired |
| US3995333A | Drain stopper | Human Necessities | 24 | Expired |
| US4523808A | Welding helmets with auxiliary optical vision systems | Human Necessities | 23 | Expired |
| US4858063A | Spiral configuration of electrodes and dielectric material for sensing an environmental property | Physics | 20 | Expired |
| US4586692A | Flushometer valve integrable with a structure | Emerging Cross-Sectional Technologies | 20 | Expired |
| US4164701A | Portable device for testing electrical wiring circuits and power tools and equipment | Physics | 20 | Expired |
| US4149521A | Solar energy collection system | Emerging Cross-Sectional Technologies | 18 | Expired |
| US4218892A | Low cost cryostat | Mechanical Engineering; Lighting; Heating | 17 | Expired |
| US4234098A | Fuel tank fill port extension | Performing Operations; Transporting | 16 | Expired |
| US4091800A | Solar pond | Emerging Cross-Sectional Technologies | 16 | Expired |
| US4065053A | Low cost solar energy collection system | Emerging Cross-Sectional Technologies | 15 | Expired |
| US4131336A | Primary reflector for solar energy collection systems | Emerging Cross-Sectional Technologies | 14 | Expired |
| US3938367A | Sampler of gas borne particles | Physics | 14 | Expired |
| US3948289A | Flow regulators | Emerging Cross-Sectional Technologies | 10 | Expired |
| US4494562A | Float valve system flow proportioning device | Emerging Cross-Sectional Technologies | 9 | Expired |
| US4330177A | Curtain for shrouding welding operations | Human Necessities | 8 | Expired |
| US4480894A | Curtain for shrouding welding operations | Physics | 7 | Expired |
| US4596269A | Differential pressure-actuated valve with clean bias chamber | Emerging Cross-Sectional Technologies | 6 | Expired |
| US4400191A | Sphere forming method and apparatus | Emerging Cross-Sectional Technologies | 6 | Expired |
| US3983714A | Cryostat system for temperatures on the order of 2.degree.K or less | Mechanical Engineering; Lighting; Heating | 5 | Expired |
| US4149817A | Primary reflector for solar energy collection systems and method of making same | Emerging Cross-Sectional Technologies | 4 | Expired |
| US4514278A | Trace water sensor | Physics | 4 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.