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• 15 United States
• 10 France
• 8 Japan
• 7 China
• 5 Korea
• 2 Other

Patent Owner(s)

Patent Owner	Address
BWI COMPANY LIMITED S A	1628 LUXEMBOURG

International Classification(s)

• F16F:SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRAT....

• 2008 Application Filing Year
• F16F Class
• 397 Applications Filed
• 229 Patents Issued To-Date
• 57.69 % Issued To-Date

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Alexandridis, Alexander A	Orchard Lake Village, US	6	83
# of filed Patents : 6 Total Citations : 83
Deng, Fang	Novi, US	48	332
# of filed Patents : 48 Total Citations : 332
Foister, Robert T	Rochester Hills, US	17	165
# of filed Patents : 17 Total Citations : 165
Kruckemeyer, William C	Beavercreek, US	40	797
# of filed Patents : 40 Total Citations : 797
Nehl, Thomas Wolfgang	Shelby Township, US	46	653
# of filed Patents : 46 Total Citations : 653

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Patent Citation Ranking

• 3 Citation Count
• F16F Class

• 6.34 % this patent is cited more than
• 13 Age

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Maintenance Fees

Fee	Large entity fee	small entity fee	micro entity fee	due date

Fee	Large entity fee	small entity fee	micro entity fee
Surcharge after expiration - Late payment is unavoidable	$700.00	$350.00	$175.00
Surcharge after expiration - Late payment is unintentional	$1,640.00	$820.00	$410.00

DATE PUBLISHED	PUBLICATION/PATENT NO.	PUBLICATION TYPE
October 16, 2012	US,8286763,B2   US8286763B2	GRANTED PATENT AS SECOND PUBLICATION
July 30, 2009	US,20090188763,A1   US20090188763A1	FIRST PUBLISHED PATENT APPLICATION

Full Text

US Patent No: 8286763

Magnetorheological fluid-based device having a magnetorheological piston assembly

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Abstract

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A magnetorheological (MR) fluid-based device including an MR piston assembly. The MR piston assembly includes a ferromagnetic MR piston core and an electric coil. The MR piston core has a central longitudinal axis and has an outer circumferential surface substantially coaxially aligned with the central longitudinal axis. The electric coil is positioned in the MR piston core and is substantially coaxially aligned with the central longitudinal axis. A portion, or at least a portion, of the electric coil is buried in the MR piston core under the outer circumferential surface.

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Description

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Claims

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Legal Events

 

• STCH2016
• FP2016
• LAPS2016
• REMI2016
• I2012
• AS2009
• P2009
• F2008
• PD2008
• AS2008

Date	Code	Event	Description
Nov 14, 2016	STCH	INFORMATION ON STATUS: PATENT DISCONTINUATION	free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362
Oct 16, 2016	FP	LAPSED DUE TO FAILURE TO PAY MAINTENANCE FEE	Effective Date: Oct 16, 2016
Oct 16, 2016	LAPS	LAPSE FOR FAILURE TO PAY MAINTENANCE FEES
May 27, 2016	REMI	MAINTENANCE FEE REMINDER MAILED
Oct 16, 2012	I	Issuance
Nov 01, 2009	AS	ASSIGNMENT	free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:DELPHI AUTOMOTIVE SYSTEMS, LLC;REEL/FRAME:024892/0813 Owner name: BWI COMPANY LIMITED S.A., LUXEMBOURG Effective Date: Nov 01, 2009
Jul 30, 2009	P	Published
Jan 29, 2008	F	Filing
Jan 29, 2008	PD	Priority Date
Jan 11, 2008	AS	ASSIGNMENT	free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:NEHL, THOMAS WOLFGANG;ALEXANDRIDIS, ALEXANDER A.;FOISTER, ROBERT T.;AND OTHERS;REEL/FRAME:020634/0726 Owner name: DELPHI TECHNOLOGIES, INC., MICHIGAN Effective Date: Jan 11, 2008