HF

Hellmut Freudenberg

SA Siemens Aktiengesellschaft: 28 patents #142 of 22,248Top 1%
CG Continental Automotive Gmbh: 6 patents #160 of 2,324Top 7%
CK Carl Freudenberg Kg: 1 patents #276 of 679Top 45%
Overall (All Time): #103,526 of 4,157,543Top 3%
34
Patents All Time

Issued Patents All Time

Showing 25 most recent of 34 patents

Patent #TitleCo-InventorsDate
9500169 Lever device and a fuel injection valve Stefan Lehmann, Stefan Kohn, Robert Kuchler, Manuel Hannich, Roland Feigl +2 more 2016-11-22
9447760 Drive device for an injection valve, and injection valve Maximilian Kronberger, Jürgen Dick, Wolfgang Wechler 2016-09-20
9376993 Lever device and a fuel injection valve Stefan Lehmann, Stefan Kohn, Robert Kuchler, Manuel Hannich, Roland Feigl +2 more 2016-06-28
9371807 Method and device for setting an idle stroke of an actuating drive of an injection valve, and injector assembly Maximilian Kronberger, Robert Schäpers, Matthias Wicke, Stefan Mindl, Wolfgang Wechler 2016-06-21
8368288 Actuator unit for an injection system of an internal combustion engine Jürgen Dick, Richard Pirkl 2013-02-05
8198783 Piezoelectric actuator with encapsulation layer having a thickness-varying property gradient Heiner Bayer, Axel Ganster, Christoph Hamann, Oliver HENNING, Jens Dahl Jensen +3 more 2012-06-12
7851978 Piezo actuator comprising a multilayer encapsulation, and method for the production thereof Heiner Bayer, Axel Ganster, Christoph Hamann, Oliver Hennig, Jens Dahl Jensen +4 more 2010-12-14
7726625 Device, method for producing the device, chamber device and transfer device Hans-Peter Arnold, Patrick Delp, Achim Löll, Willibald Schurz, Martin Simmet +2 more 2010-06-01
7406952 Method and device for controllling an injector Joachim H. Frank, Manfred Weigl 2008-08-05
7040297 Method for controlling a piezo-actuated fuel-injection valve Dirk Baranowski, Lorand D'Ouvenou, Christian Hoffmann, Wolfgang Lingl, Richard Pirkl 2006-05-09
6917141 Device with a piezoelectric actuator Wendelin Klugl, Marcus Unruh, Andreas Voigt, Claus Zumstrull 2005-07-12
RE38470 Method and device for driving at least one capacitive actuator Christian Hoffmann, Hartmut Gerken, Martin Hecker, Richard Pirkl 2004-03-23
6491027 Method of driving a capacitive actuator of a fuel injection valve of an internal combustion engine Hartmut Gerken, Martin Hecker, Christian Hoffmann, Richard Pirkl 2002-12-10
6472796 Method and apparatus for controlling a capacitive actuator Christian Hoffmann, Hartmut Gerken, Martin Hecker, Richard Pirkl 2002-10-29
6441535 Method and apparatus for driving at least one capacitive control element Hartmut Gerken, Martin Hecker, Christian Hoffmann, Richard Pirkl, Gunther Riedel 2002-08-27
6366868 Method and configuration for diagnosis of a capacitive actuator Hartmut Gerken, Martin Hecker, Christian Hoffmann, Richard Pirkl, Walter Schrod 2002-04-02
6333585 Discharge circuit for a capacitive actuator Christian Hoffmann, Hartmut Gerken, Martin Hecker, Richard Pirkl 2001-12-25
6271618 Method and configuration for driving a capacitive actuator Christian Hoffmann, Hartmut Gerken 2001-08-07
6236190 Method and device for driving a capacitive actuator Christian Hoffmann, Hartmut Gerken 2001-05-22
6212053 Device and method for driving at least one capacitive actuator Christian Hoffmann, Hartmut Gerken, Martin Hecker, Richard Pirkl 2001-04-03
6198199 Method for diagnosing a short circuit at a capacitive actuator Christian Hoffmann, Hartmut Gerken, Martin Hecker, Richard Pirkl 2001-03-06
6137208 Device and method for driving a capacitive actuator Christian Hoffmann, Georg Brasseur, Hartmut Gerken, Richard Pirkl 2000-10-24
6133714 Method of driving at least one capacitive actuator Christian Hoffmann, Manfred Weigl, Hartmut Gerken, Martin Hecker, Richard Pirkl 2000-10-17
6121715 Method and device for driving a capacitive control element Christian Hoffmann, Hartmut Gerken, Martin Hecker, Richard Pirkl 2000-09-19
6109245 Apparatus and method for driving a piezoelectrically controlled fuel injection valve Klaus Egger, Christian Hoffmann, Wendelin Klugl, Detlev Schöppe 2000-08-29