Inventor
ZIERHUT HERMANN
DE24 patents
⚠️ This page may combine multiple inventors who share the name “ZIERHUT HERMANN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SIEMENS AG
15 patentsUS5020154AMay 28, 1991
Transmission link
SIEMENS AG105 citations96
US6046516AApr 4, 2000
Electronic switch for use with inductive loads
SIEMENS AG27 citations92
US5808327ASep 15, 1998
AC controller
SIEMENS AG22 citations92
US5081440AJan 14, 1992
Bus coupler
SIEMENS AG30 citations92
US6049447AApr 11, 2000
Current limiting device
SIEMENS AG30 citations89
US5153448AOct 6, 1992
Information separation device
SIEMENS AG10 citations74
US5999387ADec 7, 1999
Current limiting device
SIEMENS AG14 citations70
US6445239B1Sep 3, 2002
Bus coupling with amplitude-controlled transmission circuit
SIEMENS AG5 citations63
US6172515B1Jan 9, 2001
Bus coupler with transformer-free transmission
SIEMENS AG3 citations63
US5801583ASep 1, 1998
Coilless bus coupler for an on-board power supply
SIEMENS AG5 citations63
US5621344AApr 15, 1997
Circuit arrangement for coupling a first electric signal into a second electric signal
SIEMENS AG3 citations63
US5019730AMay 28, 1991
Information separation device
SIEMENS AG4 citations63
US5880506AMar 9, 1999
Solid-state switching element with two source electrodes and solid-state switch with such an element
SIEMENS AG2 citations58
US5943366AAug 24, 1999
Method of generating A.C. information for a bus system, and transmission unit for carrying out the method
SIEMENS AG1 citations52
US5459429AOct 17, 1995
Drive for a symmetrical bipolar transistor
SIEMENS AG1 citations52
HIRSCHMANN RADIOTECHNIK
8 patentsUS4795905AJan 3, 1989
Circuit layout for an infrared room surveillance detector
HIRSCHMANN RADIOTECHNIK91 citations96
US4479056AOct 23, 1984
Motion detector for space surveillance
HIRSCHMANN RADIOTECHNIK30 citations92
US4645930AFeb 24, 1987
Motion detector
HIRSCHMANN RADIOTECHNIK24 citations82
US4827133AMay 2, 1989
Infrared space surveillance detector circuit
HIRSCHMANN RADIOTECHNIK11 citations73
US4625113ANov 25, 1986
Motion detector having sensing means which determine the shape of the field of sensitivity
HIRSCHMANN RADIOTECHNIK7 citations73
US4529874AJul 16, 1985
Motion detector for space surveillance
HIRSCHMANN RADIOTECHNIK12 citations73
US4702449AOct 27, 1987
Cardan ball suspension for motion sensor
HIRSCHMANN RADIOTECHNIK6 citations62
US4670655AJun 2, 1987
Alarm apparatus for spatial surveillance
HIRSCHMANN RADIOTECHNIK6 citations62