Metal seal for wellheads

United States of America Patent

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Nov 29, 2011
Grant Date
Oct 29, 2009
app pub date
Apr 27, 2009
filing date
Apr 25, 2008

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Abstract

A reusable metal seal for a wellhead provides a metal-to-metal seal and includes upper and lower tapered sealing flanks which may be deflected by tapered wall surfaces on the wellhead engaging the taper sealing flanks, and the seal may have a plurality of annular relief grooves.

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Patent Owner(s)

Patent Owner	Address
STREAM-FLO USA INC	25227 GROGAN'S MILL ROAD SUITE 125 THE WOODLANDS TX 77380

International Classification(s)

E21B:EARTH OR ROCK DRILLING

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[Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Farquharson, Keith D	Edmonton, CA	8	173
Guo, Tianle	Edmonton, CA	9	60
Lam, Tony	Edmonton, CA	26	278
Lang, Heinrich	The Woodlands, US	122	2989
Schneider, Kevin Paul	Nisku, CA	2	21

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Metal seal for wellheads

Number of patents in Portfolio can not be more than 2000

United States of America Patent

12430521

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PATENT NO	8066061
APP PUB NO	20090266558A1
SERIAL NO	12430521
DOCKET NO

US Family Size	Non-US Coverage
Patent Longevity	Forward Citations

DATE PUBLISHED	PUBLICATION/PATENT NO.	PUBLICATION TYPE
November 29, 2011	US,8066061,B2 US8066061B2	GRANTED PATENT AS SECOND PUBLICATION
October 29, 2009	US,20090266558,A1 US20090266558A1	FIRST PUBLISHED PATENT APPLICATION

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12430521

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