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Zilek Liberfarb
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Morton Grove, IL, US
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Patents Grants
last 30 patents
Information
Patent Grant
Method and system for improving stability of hydraulic systems with...
Patent number
7,261,030
Issue date
Aug 28, 2007
HydraForce, Inc.
Zilek Liberfarb
F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Information
Patent Grant
Flow regulator with pressure relief combination valve
Patent number
7,063,100
Issue date
Jun 20, 2006
HydraForce Inc.
Zilek Liberfarb
G05 - CONTROLLING REGULATING
Information
Patent Grant
Proportional pilot-operated flow control valve
Patent number
6,966,329
Issue date
Nov 22, 2005
HydraForce, Inc.
Zilek Liberfarb
G05 - CONTROLLING REGULATING
Information
Patent Grant
Proportional pressure control valve
Patent number
6,926,033
Issue date
Aug 9, 2005
Parker-Hannifin Corp.
Louis C. Harms
F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Information
Patent Grant
Proportional pressure control valve
Patent number
6,571,828
Issue date
Jun 3, 2003
Parker-Hannifin Corporation
Louis C. Harms
F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Information
Patent Grant
Proportional pressure control valve
Patent number
6,405,746
Issue date
Jun 18, 2002
Parker-Hannifin Corporation
Louis C. Harms
G05 - CONTROLLING REGULATING
Information
Patent Grant
Proportional pressure control valve
Patent number
6,286,535
Issue date
Sep 11, 2001
Parker-Hannifin Corporation
Louis C. Harms
G05 - CONTROLLING REGULATING
Information
Patent Grant
Bi-directional flow control valve
Patent number
6,167,906
Issue date
Jan 2, 2001
HydraForce, Inc.
Zilek Liberfarb
G05 - CONTROLLING REGULATING
Information
Patent Grant
Proportional priority flow regulator with reverse flow control
Patent number
6,116,263
Issue date
Sep 12, 2000
HydraForce, Inc.
Zilek Liberfarb
G05 - CONTROLLING REGULATING
Information
Patent Grant
Proportional pressure control valve
Patent number
5,836,335
Issue date
Nov 17, 1998
Fluid Power Industries, Inc.
Louis C. Harms
G05 - CONTROLLING REGULATING
Information
Patent Grant
Solenoid valve assembly
Patent number
5,564,676
Issue date
Oct 15, 1996
Fluid Power Industries, Inc.
C. Nickolas Goloff
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Patents Applications
last 30 patents
Information
Patent Application
Proportional pressure control valve
Publication number
20080017261
Publication date
Jan 24, 2008
Parker-Hannifin Corporation, an Ohio Corporation
Louis C. Harms
G05 - CONTROLLING REGULATING
Information
Patent Application
Method and system for improving stability of hydraulic systems with...
Publication number
20060086244
Publication date
Apr 27, 2006
HydraForce, Inc.
Zilek Liberfarb
F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Information
Patent Application
Proportional pressure control valve
Publication number
20050173008
Publication date
Aug 11, 2005
Parker-Hannifin Corporation, an Ohio Corporation
Louis C. Harms
G05 - CONTROLLING REGULATING
Information
Patent Application
PROPORTIONAL PRESSURE CONTROL VALVE
Publication number
20050087242
Publication date
Apr 28, 2005
Parker-Hannifin Corporation an Ohio Corporation
Louis C. Harms
G05 - CONTROLLING REGULATING
Information
Patent Application
Flow regulator with pressure relief combination valve
Publication number
20040206397
Publication date
Oct 21, 2004
HydraForce, Inc.
Zilek Liberfarb
G05 - CONTROLLING REGULATING
Information
Patent Application
Proportional pilot-operated flow control valve
Publication number
20040154672
Publication date
Aug 12, 2004
HydraForce, Inc.
Zilek Liberfarb
G05 - CONTROLLING REGULATING
Information
Patent Application
Proportional pressure control valve
Publication number
20030188788
Publication date
Oct 9, 2003
Louis C. Harms
G05 - CONTROLLING REGULATING
Information
Patent Application
Proportional pressure control valve
Publication number
20020092573
Publication date
Jul 18, 2002
Louis C. Harms
G05 - CONTROLLING REGULATING
Information
Patent Application
Proportional pressure control valve
Publication number
20010052368
Publication date
Dec 20, 2001
Louis C. Harms
G05 - CONTROLLING REGULATING