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:
Dec. 31, 2002
Filed:
Oct. 20, 2000
Applicant:
Inventors:
Masayuki Yamada, Yokohama, JP;
Takao Inukai, Yokohama, JP;
Masataka Kikuchi, Chigasaki, JP;
Joji Kaneko, Tokyo, JP;
Satoru Asai, Yokohama, JP;
Yoichi Tsuda, Tokyo, JP;
Ryuichi Ishii, Tokyo, JP;
Yomei Yoshioka, Yokohama, JP;
Assignee:
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F03B 1/04 ;
U.S. Cl.
CPC ...
F03B 1/04 ;
Abstract
A steam turbine rotor having a combination of at least one of a high pressure rotor, an intermediate pressure rotor and a low pressure rotor, which are each formed from a metal material of different chemical composition and welded together by means of welding.