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Country	kind	publication No.	Filing Date	Type	Sub-Type
JP	B2	JP3917832	Aug 10, 2001	Patent	Grant
Type : Patent Sub-Type : Grant
PUBLISHED GRANTED PATENT (SECOND LEVEL)		VALVE TIMING CONTROL DEVICE OF INTERNAL COMBUSTION ENGINE		May 23, 2007
JP	B2	JP4012386	Oct 12, 2001	Patent	Grant
Type : Patent Sub-Type : Grant
PUBLISHED GRANTED PATENT (SECOND LEVEL)		VALVE TIMING CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE		Nov 21, 2007
DE	B4	DE10236894	Aug 12, 2002	Patent	Grant
Type : Patent Sub-Type : Grant
PATENT (SECOND PUBLICATION)		Ventilzeitensteuersystem für Verbrennungsmotor		Mar 31, 2005

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

Patent Owner(s)

Patent Owner	Address
HITACHI LTD	JAPAN

International Classification(s)

• F01L:CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINE....

• 2002 Application Filing Year
• F01L Class
• 461 Applications Filed
• 189 Patents Issued To-Date
• 41 % Issued To-Date

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Nakura, Naotaka	Kanagawa, JP	6	29
# of filed Patents : 6 Total Citations : 29
Watanabe, Masahiko	Yokohama, JP	119	904
# of filed Patents : 119 Total Citations : 904
Yamamuro, Shigeaki	Kanagawa, JP	26	346
# of filed Patents : 26 Total Citations : 346

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Patent Citation Ranking

• 4 Citation Count
• F01L Class

• 2.99 % this patent is cited more than
• 21 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
May 11, 2004	US,6732688,B2   US6732688B2	GRANTED PATENT AS SECOND PUBLICATION
February 13, 2003	US,20030029399,A1   US20030029399A1	FIRST PUBLISHED PATENT APPLICATION

Full Text

US Patent No: 6732688

Valve timing control system for internal combustion engine

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Abstract

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A valve timing control system includes a driving plate, a lever provided to a camshaft, a radial slot formed in the driving plate, an intermediate rotator arranged rotatable with respect to the driving plate and the camshaft and having a spiral slot, and a link having a base end pivotally coupled to the lever and a front end arranged swingably and including a ball engaged with the spiral slot and a block member engaged with the radial slot. The ball has a center of engagement located on a swinging axis of the front end of the link, producing no moment.

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Description

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Claims

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Claims data not available

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Legal Events

 

• STCH2012
• FP2012
• LAPS2012
• REMI2011
• FPAY2007
• AS2004
• I2004
• P2003
• F2002
• AS2002
• PD2001

Date	Code	Event	Description
Jun 11, 2012	STCH	INFORMATION ON STATUS: PATENT DISCONTINUATION	free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362
May 11, 2012	FP	LAPSED DUE TO FAILURE TO PAY MAINTENANCE FEE	Effective Date: May 11, 2012
May 11, 2012	LAPS	LAPSE FOR FAILURE TO PAY MAINTENANCE FEES
Dec 26, 2011	REMI	MAINTENANCE FEE REMINDER MAILED
Oct 19, 2007	FPAY	FEE PAYMENT	year of fee payment: 4
Sep 27, 2004	AS	ASSIGNMENT	free format text: MERGER;ASSIGNOR:HITACHI UNISIA AUTOMOTIVE, LTD.;REEL/FRAME:016263/0073 Owner name: HITACHI, LTD., JAPAN Effective Date: Sep 27, 2004
May 11, 2004	I	Issuance
Feb 13, 2003	P	Published
Jul 25, 2002	F	Filing
Jun 25, 2002	AS	ASSIGNMENT	free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:YAMAMURO, SHIGEAKI;WATANABE, MASAHIKO;NAKURA, NAOTAKA;REEL/FRAME:013134/0701 Owner name: UNISIA JECS CORPORATION, JAPAN Effective Date: Jun 25, 2002
Aug 10, 2001	PD	Priority Date