Double containment valve system

United States of America Patent

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Mar 20, 2012
Grant Date
Dec 23, 2010
app pub date
Jun 19, 2009
filing date
Jun 19, 2009

priority date (Note)
Expired

status (Latency Note)

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Abstract

A stemmed control valve having a housing containing a first packing assembly that is compressively loaded externally of the housing, and a second packing assembly that is independently compressively loaded in a fixed manner internally of the housing.

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Patent Owner(s)

Patent Owner	Address
EQUISTAR CHEMICALS LP	1221 MCKINNEY STREET SUITE 300 HOUSTON TX 77010

International Classification(s)

F16K:VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR....

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[Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
King, Ralph E	Friendswood, US	3	10

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Double containment valve system

Number of patents in Portfolio can not be more than 2000

United States of America Patent

12456635

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PATENT NO	8136792
APP PUB NO	20100320411A1
SERIAL NO	12456635
DOCKET NO

US Family Size	Non-US Coverage
Patent Longevity Expired	Forward Citations

DATE PUBLISHED	PUBLICATION/PATENT NO.	PUBLICATION TYPE
March 20, 2012	US,8136792,B2 US8136792B2	GRANTED PATENT AS SECOND PUBLICATION
December 23, 2010	US,20100320411,A1 US20100320411A1	FIRST PUBLISHED PATENT APPLICATION

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12456635

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