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:
Jul. 01, 2003
Filed:
Feb. 25, 2002
Applicant:
Inventors:
Yasuhisa Aono, Hitachi, JP;
Ryo Ishibashi, Hitachi, JP;
Kazutaka Okamoto, Hitachi, JP;
Masayuki Doi, Hitachinaka, JP;
Hisanori Okamura, Tokai, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23K 2/012 ; B23K 3/102 ;
U.S. Cl.
CPC ...
B23K 2/012 ; B23K 3/102 ;
Abstract
Structural components obtained by a process for welding iron-base materials, where the iron-base material is iron-base fine grained materials free from any amorphous phase, which comprises welding two kinds of fine grained materials of chemical and crystallographically same or different kinds from one another, whose average grain sizes d are in a range of 10 nm<d≦5×10 nm, etc., by friction stir welding can maintain distinguished properties of fine grained materials, such as strength and corrosion resistance.