Inventor
FREUDENBERG HELLMUT
DE34 patents
⚠️ This page may combine multiple inventors who share the name “FREUDENBERG HELLMUT”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SIEMENS AG
26 patentsUS6271618B1Aug 7, 2001
Method and configuration for driving a capacitive actuator
SIEMENS AG23 citations92
US6236190B1May 22, 2001
Method and device for driving a capacitive actuator
SIEMENS AG30 citations92
US6198199B1Mar 6, 2001
Method for diagnosing a short circuit at a capacitive actuator
SIEMENS AG20 citations92
US6133714AOct 17, 2000
Method of driving at least one capacitive actuator
SIEMENS AG39 citations92
US6121715ASep 19, 2000
Method and device for driving a capacitive control element
SIEMENS AG21 citations92
US6060814AMay 9, 2000
Device and method for driving at least one capacitive actuator
SIEMENS AG31 citations92
US6016040AJan 18, 2000
Device and method for driving at least one capacitive actuator
SIEMENS AG39 citations92
US5986360ANov 16, 1999
Device and method for controlling at least one capacitive actuator
SIEMENS AG21 citations92
US6109245AAug 29, 2000
Apparatus and method for driving a piezoelectrically controlled fuel injection valve
SIEMENS AG24 citations90
US6472796B1Oct 29, 2002
Method and apparatus for controlling a capacitive actuator
SIEMENS AG17 citations84
US6441535B2Aug 27, 2002
Method and apparatus for driving at least one capacitive control element
SIEMENS AG18 citations84
US6137208AOct 24, 2000
Device and method for driving a capacitive actuator
SIEMENS AG16 citations84
US6491027B1Dec 10, 2002
Method of driving a capacitive actuator of a fuel injection valve of an internal combustion engine
SIEMENS AG13 citations74
US6333585B1Dec 25, 2001
Discharge circuit for a capacitive actuator
SIEMENS AG8 citations74
US6212053B1Apr 3, 2001
Device and method for driving at least one capacitive actuator
SIEMENS AG11 citations74
US6081062AJun 27, 2000
Method and device for driving at least one capacitive actuator
SIEMENS AG12 citations74
US7406952B2Aug 5, 2008
Method and device for controllling an injector
SIEMENS AG7 citations73
US6078198AJun 20, 2000
Device and method for driving a capacitive actuator
SIEMENS AG14 citations73
USRE38470EMar 23, 2004
Method and device for driving at least one capacitive actuator
SIEMENS AG2 citations63
US5279275AJan 18, 1994
Process for operating an internal combustion engine
SIEMENS AG4 citations63
US7851978B2Dec 14, 2010
Piezo actuator comprising a multilayer encapsulation, and method for the production thereof
SIEMENS AG4 citations62
US6917141B2Jul 12, 2005
Device with a piezoelectric actuator
SIEMENS AG2 citations62
US5967117AOct 19, 1999
Method for determining a rotational speed for an idling control of an internal combustion engine
SIEMENS AG5 citations61
US7040297B2May 9, 2006
Method for controlling a piezo-actuated fuel-injection valve
SIEMENS AG6 citations60
US5301649AApr 12, 1994
Ignition device for internal combustion engines
SIEMENS AG5 citations58
US5261377ANov 16, 1993
Process for the transition correction of the mixture control of an internal combustion engine during dynamic transition states
SIEMENS AG1 citations41