The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 8381812 B1

PDF
Full Text
Expired
Date of Patent:
Feb. 26, 2013

Filed:

Apr. 22, 2008
Applicants:

Per Hassel Sørensen, Sandnes, NO;

Gunnar Hviding, Stavanger, NO;

Inventors:

Per Hassel Sørensen, Sandnes, NO;

Gunnar Hviding, Stavanger, NO;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B 47/10 (2006.01);
U.S. Cl.
CPC ...
Abstract

A well head barrier assembly () including a termination of an instrument tube () installed in a well and a primary pressure barrier () for the well pressure comprising a tool () arranged for being pushed into a passage () in which the instrument tube () is arranged. The closing of the passage () provides an additional secondary pressure barrier in the well head, thus enabling re-establishment of a double pressure barrier following a breakage of the instrument tube ().


Find Patent Forward Citations

Sørensen, Per. (2013). Barrier for instrumentation piping (U.S. Patent No. 8381812). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8381812

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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