Inventor
PINNOW DOUGLAS A
US20 patents
⚠️ This page may combine multiple inventors who share the name “PINNOW DOUGLAS A”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
UNIVERSAL PHOTONICS INC
7 patentsUS4931789AJun 5, 1990
Apparatus and method for a universal electronic locking system
UNIVERSAL PHOTONICS INC193 citations98
US5132661AJul 21, 1992
Security system employing optical key shape reader
UNIVERSAL PHOTONICS INC67 citations96
US4868559ASep 19, 1989
Security system employing optical key shape reader
UNIVERSAL PHOTONICS INC70 citations96
US4665397AMay 12, 1987
Apparatus and method for a universal electronic locking system
UNIVERSAL PHOTONICS INC117 citations96
US4573046AFeb 25, 1986
Watch apparatus and method for a universal electronic locking system
UNIVERSAL PHOTONICS INC100 citations96
US4942747AJul 24, 1990
Operator lockout prevention device
UNIVERSAL PHOTONICS INC13 citations73
US4912525AMar 27, 1990
Apparatus for transmitting optical signals into a protected environment
UNIVERSAL PHOTONICS INC6 citations62
HUGHES AIRCRAFT CO
5 patentsUS4289381ASep 15, 1981
High selectivity thin film polarizer
HUGHES AIRCRAFT CO150 citations97
US4170997AOct 16, 1979
Medical laser instrument for transmitting infrared laser energy to a selected part of the body
HUGHES AIRCRAFT CO128 citations95
US4139936AFeb 20, 1979
Method of making hermetic coaxial cable
HUGHES AIRCRAFT CO51 citations92
US4197008AApr 8, 1980
Electro-optic tunable optical filter
HUGHES AIRCRAFT CO53 citations91
US4451116AMay 29, 1984
Infrared transmitting fiber optical waveguide extruded from halides of the metal thallium and the method of preparation
HUGHES AIRCRAFT CO23 citations78
ELECTRONIC MONITORING SYSTEMS
3 patentsUS5537102AJul 16, 1996
Apparatus and method for a system capable of remotely validating the identity of individual and their location
ELECTRONIC MONITORING SYSTEMS120 citations97
US6130620AOct 10, 2000
Remote monitoring system
ELECTRONIC MONITORING SYSTEMS85 citations92
US6275159B1Aug 14, 2001
Remote monitoring system
ELECTRONIC MONITORING SYSTEMS14 citations70