Assignee
CKD PRAHA
CS21 patents
Top patents by PatentIndex Score
US4188996AFeb 19, 1980
Liquid cooler for semiconductor power elements
CKD PRAHA52 citations88
US4129881ADec 12, 1978
Heat sink cooled, semiconductor device assembly having liquid metal interface
CKD PRAHA31 citations80
US3952797AApr 27, 1976
Semi conductor cooling system
CKD PRAHA22 citations78
US4067042AJan 3, 1978
Heat sink mechanism hydraulically propelled into contact with semiconductor devices
CKD PRAHA11 citations71
US4459850AJul 17, 1984
Apparatus for picking-up and analyzing emitted accoustic and ultrasonic signals in hollow bodies
CKD PRAHA8 citations70
US4009969AMar 1, 1977
Supporting ring for stator vanes in an axial compressor
CKD PRAHA20 citations69
US3989095ANov 2, 1976
Semi conductor cooling system
CKD PRAHA8 citations69
US4321663AMar 23, 1982
Process of pulse duration modulation of a multi-phase converter
CKD PRAHA11 citations67
US3942049AMar 2, 1976
Piezoelectric pick-up device for measuring pressures within hollow bodies
CKD PRAHA15 citations67
US4317166AFeb 23, 1982
Circuit arrangement for self-commutated inverters
CKD PRAHA7 citations65
US4252013AFeb 24, 1981
Arrangement for complex diagnosis of internal combustion engines
CKD PRAHA10 citations62
US4976226ADec 11, 1990
Method for increasing the heat efficiency of a piston combustion engine
CKD PRAHA17 citations60
US4075557AFeb 21, 1978
Contactless facilities for determining the specific resistance of a test sample
CKD PRAHA8 citations58
US4057999ANov 15, 1977
Apparatus for testing engine oil
CKD PRAHA9 citations58
US4037246AJul 19, 1977
High-power semiconductive devices
CKD PRAHA6 citations58
US4104677AAug 1, 1978
Arrangement for adjustably urging a semi-conductive element against a heat sink
CKD PRAHA4 citations57
US4318171AMar 2, 1982
Method of three commutation on rectifiers and of inverted electric current converters
CKD PRAHA2 citations56
US4298882ANov 3, 1981
Multilayer semiconductor element
CKD PRAHA4 citations48
US4259622AMar 31, 1981
Circuit arrangement for driving and for independent recuperation braking of a vehicle
CKD PRAHA3 citations45
US4326246AApr 20, 1982
Circuit arrangement of an inverted current rectifier with self commutation
CKD PRAHA1 citations42
US4139788AFeb 13, 1979
Test circuit for indication of deviation of source voltages from their set points
CKD PRAHA0 citations36