John Gray
13Patents
7h-index
15Co-inventors
63Inventor score
Filing activity: Mar 25, 1980 → Nov 13, 2007
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4914732A | Electronic key with interactive graphic user interface | Emerging Cross-Sectional Technologies | 216 | Expired |
| US4766746A | Electronic real estate lockbox system | Emerging Cross-Sectional Technologies | 137 | Expired |
| US4947163A | Electronic security system with configurable key | Emerging Cross-Sectional Technologies | 70 | Expired |
| US4794248A | Detection device having energy transmitters located at vertically spaced apart points along movable doors | Fixed Constructions | 59 | Expired |
| USRE33668E | Detection device having energy transmitters located at vertically spaced apart points along movable doors | General | 36 | Expired |
| US4896246A | Electronic lock with energy conservation features | Physics | 29 | Expired |
| US7884754B1 | Method of distributed estimation using multiple asynchronous sensors | Physics | 10 | Active |
| US7891953B2 | Rotating wedge leveler | Emerging Cross-Sectional Technologies | 5 | Active |
| US8303241B2 | Turbine yaw control | Emerging Cross-Sectional Technologies | 4 | Active |
| US4394889A | Modified slowdown and braking of an elevator car | Physics | 3 | Expired |
| US7973240B2 | Cable jacket sealing, pressurization, and monitoring | Electricity | 2 | Active |
| US8147201B2 | Kinetic hydro power triangular blade hub | Emerging Cross-Sectional Technologies | 1 | Active |
| US7597532B2 | Single sided power generator support frame | Emerging Cross-Sectional Technologies | 1 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.