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:
Nov. 09, 1993
Filed:
May. 24, 1991
Applicant:
Inventors:
Hiroyoshi Ishii, Kumagaya, JP;
Misao Kaneko, Kumagaya, JP;
Assignee:
Kabushiki Kaisha Riken, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B32B / ; B32B / ; H05K / ;
U.S. Cl.
CPC ...
428328 ; 174 / ; 428256 ; 428329 ; 428357 ; 428458 ;
Abstract
An electromagnetic shielding sheet comprising a combination of at least one amorphous alloy layer containing Co based amorphous alloy flakes, at least one electrical conductive metal layer, and an insulation layer therebetween. This sheet is effective in shielding instruments from electromagnetic waves of both low and high frequency.