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:
Sep. 15, 2015
Filed:
Oct. 02, 2009
Yoshio Hamamoto, Yokohama, JP;
Yuuichi Motora, Tokyo, JP;
Hiromi Kato, Yokohama, JP;
Masahiro Takeuchi, Yokohama, JP;
Masataka Tamura, Yokohama, JP;
Satoshi Okada, Tokyo, JP;
Taiji Kobayashi, Kawasaki, JP;
Masaki Yoda, Yokohama, JP;
Hiroyuki Miyasaka, Yokohama, JP;
Wataru Kono, Yokohama, JP;
Masakazu Abura, Yokohama, JP;
Yoshio Hamamoto, Yokohama, JP;
Yuuichi Motora, Tokyo, JP;
Hiromi Kato, Yokohama, JP;
Masahiro Takeuchi, Yokohama, JP;
Masataka Tamura, Yokohama, JP;
Satoshi Okada, Tokyo, JP;
Taiji Kobayashi, Kawasaki, JP;
Masaki Yoda, Yokohama, JP;
Hiroyuki Miyasaka, Yokohama, JP;
Wataru Kono, Yokohama, JP;
Masakazu Abura, Yokohama, JP;
KABUSHIKI KAISHA TOSHIBA, Tokyo, JP;
Abstract
A heating laser beam is emitted to a cracked portion to remove moisture from the cracked portion, and subsequently, a welding laser beam is emitted to the cracked portion to heat and melt the cracked portion. The heating laser beam and the welding laser beam are emitted to an entire surface of the cylindrical body inside the reactor such as a stub tube penetrating through and fixed to a reactor bottom portion and a crack of the welded portion between the cylindrical body and the reactor bottom portion to thereby prevent a new crack from occurring and reactor water from leaking.