Inventor
Thomas J. Hajek, Jr.
Inventor
Lockport, IL, US
Overview
Patents· 27 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
F15Bprimary
F15BSystems acting by means of fluids in general38%
Y10TTechnical subjects covered by former us classification19%
E02FDredging13%
F16KValves13%
B65DContainers for storage or transport of articles or materials, e.g. bags, barrels, bottles, boxes, cans, cartons, crates, drums, jars, tanks, hoppers, forwarding containers4%
B01DSeparation2%
B60GVehicle suspension arrangements2%
F02NStarting of combustion engines2%
F03CPositive-displacement engines driven by liquids2%
F04BPositive-displacement machines for liquids2%
PatentTitleYear
9,651,067'Hydraulic system with a dynamic seal'20177,472,638'Hydraulic system with an actuator having independent meter-in meter-out control'20097,210,585'Edge filter assembly'20076,976,418'Hydraulic system with an actuator having independent meter-in meter-out control'20056,935,114'System and method for starting an engine'20056,722,258'Dual cylinder circuit having a joystick with intuitive control'20046,715,403'Independent and regenerative mode fluid control system'20046,701,822'Independent and regenerative mode fluid control system'20046,691,604'Hydraulic system with an actuator having independent meter-in meter-out control'20046,631,653'System for definable single lever control shift pattern joint'20036,572,344'Compact pump or motor with internal swash plate'20036,546,957'Dual cylinder circuit having a joystick with intuitive control'20036,357,230'Hydraulic ride control system'20026,321,534'Ride control'20016,293,181'Control system providing a float condition for a hydraulic cylinder'20016,199,378'Off-setting rate of pressure rise in a fluid system'20016,186,044'Fluid control system with float capability'20016,173,639'Fluid control system having float control'20016,161,467'Fluid control system with regeneration'20006,089,528'Poppet valve control with sealing element providing improved load drift control'20006,047,944'Poppet with a flow increasing element for limiting movement thereof in a poppet valve'20005,950,989'Valve interface having mismatched radii'19995,906,351'Integrated electrohydraulic actuator'19995,709,368'Hydraulic control valve for fluid metering and cylinder protection'19984,334,553'Resettable valve spool with kick-out member'19824,183,498'Draining apparatus for a fluid reservoir'19804,155,534'Draining apparatus for a fluid reservoir'1979Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1979–1982Patents assigned to CATERPILLAR TRACTOR CO (3)· patent assignee history
1979–1980Based in Joliet, IL, US· patent location history
1982–2017Based in Lockport, IL, US· patent location history
1998–2017Patents assigned to CATERPILLAR INC (24)· patent assignee history
2004Patents assigned to CATERPILLAR MITSUBISHI LTD (2)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| CATERPILLAR INC | 24 | 1998–2017 |
| CATERPILLAR TRACTOR CO | 3 | 1979–1982 |
| CATERPILLAR MITSUBISHI LTD | 2 | 2004 |
Locations
| Location | Patents | Span |
|---|---|---|
| Lockport, Illinois, US | 25 | 1982–2017 |
| Joliet, Illinois, US | 2 | 1979–1980 |