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:
Feb. 19, 2019
Filed:
Mar. 03, 2015
Applicant:
Jfe Steel Corporation, Tokyo, JP;
Inventors:
Yukinori Iizuka, Tokyo, JP;
Hiroaki Ono, Tokyo, JP;
Toshifumi Kodama, Tokyo, JP;
Akihiro Ogawa, Tokyo, JP;
Assignee:
JFE Steel Corporation, , JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N 21/88 (2006.01); G01J 5/00 (2006.01); G01N 25/72 (2006.01); G01J 5/48 (2006.01); G01N 21/359 (2014.01); G01N 21/93 (2006.01); G01N 21/95 (2006.01);
U.S. Cl.
CPC ...
G01N 21/8806 (2013.01); G01J 5/48 (2013.01); G01N 21/359 (2013.01); G01N 21/93 (2013.01); G01N 21/95 (2013.01); G01N 25/72 (2013.01); G01J 2005/0077 (2013.01);
Abstract
A surface inspection method for a steel pipe detects a surface defect on a hot steel pipe, and includes: an imaging step of imaging a self-luminous image of the hot steel pipe; a correcting step of making more uniform luminance variation in a circumferential direction of the self-luminous image and correcting the self-luminous image; and a detecting step of detecting a surface defect based on the self-luminous image corrected at the correcting step.