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Inventor

GRAY JOHN E

US8 patents
⚠️ This page may combine multiple inventors who share the name “GRAY JOHN E”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

SUPRA PROD INC

4 patents
US4914732AApr 3, 1990

Electronic key with interactive graphic user interface

SUPRA PROD INC267 citations97
US4766746AAug 30, 1988

Electronic real estate lockbox system

SUPRA PROD INC195 citations97
US4947163AAug 7, 1990

Electronic security system with configurable key

SUPRA PROD INC94 citations93
US4896246AJan 23, 1990

Electronic lock with energy conservation features

SUPRA PROD INC44 citations91

OTIS ELEVATOR CO

2 patents
US4794248ADec 27, 1988

Detection device having energy transmitters located at vertically spaced apart points along movable doors

OTIS ELEVATOR CO96 citations95
US4394889AJul 26, 1983

Modified slowdown and braking of an elevator car

OTIS ELEVATOR CO7 citations72

US NAVY

1 patent
US7884754B1Feb 8, 2011

Method of distributed estimation using multiple asynchronous sensors

US NAVY36 citations88

VERDANT POWER INC

1 patent
US7597532B2Oct 6, 2009

Single sided power generator support frame

VERDANT POWER INC1 citations43