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Inventor

Zilek Liberfarb

Inventor
Morton Grove, IL, US

Overview

12→
Patents
1981–2007
Patent span
Mechanical engineering
Primary field (CPC F)

Patents· 12 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

G05Dprimary
G05DSystems for controlling or regulating non-electric variables26%
Y10TTechnical subjects covered by former us classification26%
F15BSystems acting by means of fluids in general23%
F16HGearing14%
F16KValves9%
B62DMotor vehicles3%
PatentTitleYear
7,261,030'Method and system for improving stability of hydraulic systems with load sense'20077,063,100'Flow regulator with pressure relief combination valve'20066,966,329'Proportional pilot-operated flow control valve'20056,926,033'Proportional pressure control valve'20056,571,828'Proportional pressure control valve'20036,405,746'Proportional pressure control valve'20026,286,535'Proportional pressure control valve'20016,167,906'Bi-directional flow control valve'20016,116,263'Proportional priority flow regulator with reverse flow control'20005,836,335'Proportional pressure control valve'19985,564,676'Solenoid valve assembly'19964,270,349'Distributing device of vehicle hydraulic control system'1981

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1981Patents assigned to CHERVYAKOV EVGENY N (1)· patent assignee history
1981Patents assigned to KANDRUSEV IGOR I (1)· patent assignee history
1981Based in Minsk, SU· patent location history
1996–1998Patents assigned to FLUID POWER IND INC (2)· patent assignee history
1996–2006Based in Morton Grove, IL, US· patent location history
2000–2007Patents assigned to HYDRAFORCE INC (5)· patent assignee history
2001–2005Patents assigned to PARKER HANNIFIN CORP (4)· patent assignee history
2005–2007Based in Buffalo Grove, IL, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
HYDRAFORCE INC52000–2007
PARKER HANNIFIN CORP42001–2005
FLUID POWER IND INC21996–1998
CHERVYAKOV EVGENY N11981
KANDRUSEV IGOR I11981
Locations
LocationPatentsSpan
Morton Grove, Illinois, US91996–2006
Buffalo Grove, Illinois, US22005–2007
Minsk, SU11981