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:
Sep. 08, 1981
Filed:
Feb. 04, 1980
Applicant:
Inventors:
Yoshitaka Hiromae, Kitayushu, JP;
Kazuo Nakamura, Munakata, JP;
Toshiya Wada, Kitakyushu, JP;
Hirotada Katoh, Kitakyushu, JP;
Assignee:
Nippon Steel Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B32B / ; B32B / ;
U.S. Cl.
CPC ...
428336 ; 336219 ; 427 44 ; 427 541 ; 427129 ; 427130 ; 428418 ; 4284255 ; 4284258 ; 428439 ; 428447 ; 428450 ; 428457 ; 428458 ; 260 / ; 260 / ; 260 / ; 260 / ;
Abstract
A coating composition including inorganic compounds dispersed in an organic material capable upon exposure to UV rays or electron beams of producing an adherent insulating film of high dielectric properties on the surfaces of electro-sheets of ferrous material. The coated electro-sheets are annealed after the forming, for example, cutting or punching operation in order to remove thereby imparted stresses without impairing the dielectric properties.