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. 17, 2017
Filed:
Dec. 10, 2013
Applicants:
Michael A. Masleid, Dyer, IN (US);
Zofia E. Niemczura, Porter, IN (US);
George B. Tsvik, Valparaiso, IN (US);
Inventors:
Michael A. Masleid, Dyer, IN (US);
Zofia E. Niemczura, Porter, IN (US);
George B. Tsvik, Valparaiso, IN (US);
Assignee:
ArcelorMittal, Luxembourg, LU;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N 27/82 (2006.01); G01N 27/83 (2006.01); G01N 27/90 (2006.01);
U.S. Cl.
CPC ...
G01N 27/82 (2013.01); G01N 27/83 (2013.01); G01N 27/9046 (2013.01);
Abstract
Testing methods and apparatus for testing the health of steel tubes used in reformers and other tubes and pipes used in other high temperature applications. The method includes the steps of transmitting two sinusoidal electromagnetic signals, each having a different frequency Fand Finto the reformer tube, receiving a response signal, and analyzing the received response signal's intermodulation frequencies to determine the state of the steel reformer tube.