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.:
Date of Patent:
Jan. 12, 2021
Filed:
Dec. 14, 2018
Applicant:
Colt Petroleum Technology, Llc, Spring, TX (US);
Inventor:
Mark B. Nichols, Mineral Wells, TX (US);
Assignee:
COLT PETROLEUM TECHNOLOGY, LLC, The Woodlands, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 34/14 (2006.01); E21B 34/10 (2006.01);
U.S. Cl.
CPC ...
E21B 34/10 (2013.01);
Abstract
A downhole communication valve containing a piston and chamber which allows hydrostatic testing of a casing or tubing string multiple times before permanently opening communication ports to the exterior.