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. 26, 2000
Filed:
Mar. 02, 1998
Applicant:
Inventors:
Kenji Miyazaki, Osaka, JP;
Shinichi Kitamura, Osaka, JP;
Atsushi Yoshida, Osaka, JP;
Shinichiro Yahagi, Aichi, JP;
Takanobu Saito, Aichi, JP;
Assignees:
Sumitomo Electric Industries, Ltd., Osaka, JP;
Daido Steel Co., Ltd., Nagoya, JP;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C22C / ;
U.S. Cl.
CPC ...
428606 ; 428364 ; 428553 ; 428680 ; 148320 ; 148336 ; 148409 ; 148595 ;
Abstract
An INVAR.RTM. or iron nickel alloy or iron nickel cobalt alloy wire has an area ratio of carbide existing at the grain boundaries of the wire in the finished wire of at most 4%, or an average grain size in the transverse direction within a range of 1 to 5 .mu.m. Such a wire has a superior twisting property.