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, 1991
Filed:
Apr. 24, 1990
Applicant:
Inventors:
Katsuyuki Ara, Ibaraki, JP;
Hideyuki Yagi, Ibaraki, JP;
Hideo Ikeda, Amagasaki, JP;
Toshitsugu Ohmura, Amagasaki, JP;
Megumi Ohmine, Amagasaki, JP;
Masaharu Moriyasu, Amagasaki, JP;
Assignees:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01F / ;
U.S. Cl.
CPC ...
148122 ; 148306 ; 148903 ; 428611 ;
Abstract
A method of manufacturing a heat resisting magnetic scale is disclosed which comprises a manufacturing process in which at least a part of a heat resisting base is heated and immediately cooled for the purpose of fusing the heated part to the base and changing both the magnetic characteristics of the part of the base which has been heated and the Curie point of the part which has been heated is raised to 100.degree. C. or higher.