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

Patent Owner(s)

Patent Owner	Address
NORTHROP GRUMMAN SYSTEMS CORPORATION	2980 FAIRVIEW PARK DRIVE FALLS CHURCH VA 22042-4511

International Classification(s)

• G05F:SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIAB....

• 2005 Application Filing Year
• G05F Class
• 1100 Applications Filed
• 716 Patents Issued To-Date
• 65.10 % Issued To-Date

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
O'Meara, Kevin Thomas	Chatsworth , US	1	6
# of filed Patents : 1 Total Citations : 6

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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 06, 2009	US,7598717,B2   US7598717B2	GRANTED PATENT AS SECOND PUBLICATION
October 12, 2006	US,20060226823,A1   US20060226823A1	FIRST PUBLISHED PATENT APPLICATION

Full Text

US Patent No: 7598717

Current-sourced power supplies

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Abstract

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A method for providing stable dc-to-dc power conversion from high impedance or pure current input sources by inverting the duty cycle control with respect to the duty cycle control used with low impedance or pure voltage input sources.

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Description

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Claims

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Claims data not available

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Legal Events

 

• LAPS2017
• STCH2017
• FP2017
• REMI2017
• FPAY2013
• AS2011
• I2009
• FEPP2008
• P2006
• AS2006
• F2005
• PD2005
• AS2005

Date	Code	Event	Description
Nov 06, 2017	LAPS	LAPSE FOR FAILURE TO PAY MAINTENANCE FEES	free format text: PATENT EXPIRED FOR FAILURE TO PAY MAINTENANCE FEES (ORIGINAL EVENT CODE: EXP.)
Nov 06, 2017	STCH	INFORMATION ON STATUS: PATENT DISCONTINUATION	free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362
Oct 06, 2017	FP	LAPSED DUE TO FAILURE TO PAY MAINTENANCE FEE	Effective Date: Oct 06, 2017
May 19, 2017	REMI	MAINTENANCE FEE REMINDER MAILED
Mar 14, 2013	FPAY	FEE PAYMENT	year of fee payment: 4
Jan 04, 2011	AS	ASSIGNMENT	free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:NORTHROP GRUMMAN CORPORATION;REEL/FRAME:025597/0505 Owner name: NORTHROP GRUMMAN SYSTEMS CORPORATION, CALIFORNIA Effective Date: Jan 04, 2011
Oct 06, 2009	I	Issuance
Oct 31, 2008	FEPP	FEE PAYMENT PROCEDURE	free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY
Oct 12, 2006	P	Published
Jun 21, 2006	AS	ASSIGNMENT	free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:NORTHROP GRUMMAN CORPORATION;REEL/FRAME:018148/0388 Owner name: LITTON SYSTEMS, INC., CALIFORNIA Effective Date: Jun 21, 2006
Apr 08, 2005	F	Filing
Apr 08, 2005	PD	Priority Date
Apr 04, 2005	AS	ASSIGNMENT	free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:O'MEARA, KEVAN THOMAS, MR.;REEL/FRAME:016813/0340 Owner name: NORTHROP GRUMMAN CORPORATION, CALIFORNIA Effective Date: Apr 04, 2005