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:
Mar. 12, 2002
Filed:
Sep. 30, 1997
Applicant:
Inventors:
Shuji Ueno, Kyoto, JP;
Kenji Amiya, Kyoto, JP;
Toshiyuki Hirano, Kyoto, JP;
Isamu Ogasawara, Kyoto, JP;
Assignee:
Unitika Ltd., Hyogo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B32B 1/502 ; B32B 1/508 ; H01F 1/00 ; G01N 2/772 ;
U.S. Cl.
CPC ...
B32B 1/502 ; B32B 1/508 ; H01F 1/00 ; G01N 2/772 ;
Abstract
An Fe group-based amorphous alloy ribbon having a cross section having a width of from 100 to 900 &mgr;m and a thickness of from 8 to 50 &mgr;m and a magnetic hysteresis loop which exhibits a large Barkhausen discontinuity. The amorphous alloy ribbon is suitable for preparing magnetic markers for use in an anti-theft system and an article surveillance system, and as a pulse generator. A magnetic marker formed from the amorphous alloy ribbon is also disclosed.