Inventor
ROTHKEGEL BERNHARD
DE13 patents
⚠️ This page may combine multiple inventors who share the name “ROTHKEGEL BERNHARD”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SIEMENS AG
12 patentsUS3954459AMay 4, 1976
Method for making sintered silver-metal oxide electric contact material
SIEMENS AG39 citations92
US4609525ASep 2, 1986
Cadmium-free silver and metal oxide composite useful for electrical contacts and a method for its manufacture
SIEMENS AG22 citations81
US4681702AJul 21, 1987
Sintered, electrical contact material for low voltage power switching
SIEMENS AG11 citations73
US4153755AMay 8, 1979
Impregnated sintered material for electrical contacts and method for its production
SIEMENS AG17 citations73
US5246480ASep 21, 1993
Sintered contact material based on silver for use in power engineering switch-gear, in particular for contact pieces in low-voltage switches
SIEMENS AG12 citations72
US4855104AAug 8, 1989
Method for the production of sintered electrical contact material for low voltage power switching
SIEMENS AG9 citations72
US4764227AAug 16, 1988
Sintered electrical contact material for low voltage power switching
SIEMENS AG10 citations72
US4980125ADec 25, 1990
Sinter contact material for low voltage switching apparatus of the energy technology, in particular for motor contactors
SIEMENS AG7 citations70
US4362494ADec 7, 1982
Automatic press
SIEMENS AG3 citations62
US4008520AFeb 22, 1977
Contact member and method of manufacture
SIEMENS AG3 citations62
US4185968AJan 29, 1980
Method for generating a solderable surface on a contact piece of silver and finely distributed graphite particles
SIEMENS AG2 citations56
US4543223ASep 24, 1985
Method for the dry molding of formed parts
SIEMENS AG0 citations41