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:
Nov. 16, 2004
Filed:
Dec. 20, 2002
Applicant:
Inventors:
Leland M. Brill, Hughes Spring, TX (US);
Bluford W. Lowery, Linden, TX (US);
Edmond L. Miller, Bowie County, TX (US);
Assignee:
Lone Star Steel Company, Dallas, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16L 3/500 ;
U.S. Cl.
CPC ...
F16L 3/500 ;
Abstract
Oil country tubular goods and other types of tubular members are provided with threaded and coupled connections satisfactory for use in drilling and completing wellbores. The threaded and coupled connections are used to join sections of casing with each other to form a casing string which may be used to drill and complete a wellbore. Each tubular member has first and second pin ends with approximately the same thread form and thread profile with different pitch diameters. Standard API couplings may be used with the casing string.