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:
Jun. 13, 2000
Filed:
Sep. 22, 1997
Applicant:
Inventors:
Masao Siga, Hitachiota, JP;
Takeshi Onoda, Hitachi, JP;
Shigeyoshi Nakamura, Hitachinaka, JP;
Ryo Hiraga, Hitachiota, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C22C / ;
U.S. Cl.
CPC ...
4162 / ; 415200 ; 4152161 ;
Abstract
A high and low pressure sides integrating steam turbine having high and low pressure sides integrating steam turbine blades, each made of a martensite steel including 8-13 wt % Cr, and having a blade length of 33 inches or more for 60 Hz power generation and 40 inches for 50 Hz power generation.