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

Patent Owner(s)

Patent Owner	Address
PERGO (EUROPE) AB	STANDRIDAREGATAN 8 TRELLEBORG S-231 25

International Classification(s)

• B32B:LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA....

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Akerman, Kent	Trelleborg, SE	4	13
# of filed Patents : 4 Total Citations : 13
Kornfalt, Sven	Malmo, SE	35	1290
# of filed Patents : 35 Total Citations : 1290
Lindstedt, Anja	Vellinge, SE	4	13
# of filed Patents : 4 Total Citations : 13
Ringo, Peter	Skurup, SE	6	185
# of filed Patents : 6 Total Citations : 185

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Patent Citation Ranking

• 2 Citation Count
• B32B Class

• 5.58 % this patent is cited more than
• 14 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
December 06, 2011	US,8071192,B2   US8071192B2	GRANTED PATENT AS SECOND PUBLICATION
March 15, 2007	US,20070059543,A1   US20070059543A1	FIRST PUBLISHED PATENT APPLICATION

Full Text

US Patent No: 7886830

Downhole safety valve apparatus and method

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Abstract

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The application discloses a safety valve to replace an existing safety valve in order to isolate a production zone from a string of tubing when closed. Preferably, the safety valve includes a flow interruption device displaced by an operating conduit extending from a surface location to the safety valve through the inside of the production tubing. The application also discloses a bypass-conduit which allows communication from a surface location to the production zone through the safety valve without affecting the operation of the safety valve.

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Description

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Claims

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Claims data not available

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Legal Events

 

• MAFP2022
• MAFP2018
• FPAY2014
• I2011
• STCF2011
• P2010
• F2009
• PD2004

Date	Code	Event	Description
Jul 20, 2022	MAFP	MAINTENANCE FEE PAYMENT	free format text: PAYMENT OF MAINTENANCE FEE, 12TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1553); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY year of fee payment: 12
Aug 02, 2018	MAFP	MAINTENANCE FEE PAYMENT	free format text: PAYMENT OF MAINTENANCE FEE, 8TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1552) year of fee payment: 8
Jul 16, 2014	FPAY	FEE PAYMENT	year of fee payment: 4
Feb 15, 2011	I	Issuance
Jan 26, 2011	STCF	INFORMATION ON STATUS: PATENT GRANT	free format text: PATENTED CASE
Apr 22, 2010	P	Published
Dec 23, 2009	F	Filing
Oct 07, 2004	PD	Priority Date