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. 23, 1999
Filed:
Mar. 31, 1997
Applicant:
Inventors:
Yasuo Imashiro, Tokyo, JP;
Shun Hasegawa, Tokyo, JP;
Isao Kato, Tokyo, JP;
Yoshihiko Kawahara, Tokyo, JP;
Assignees:
Nisshinbo Industries, Inc., Tokyo, JP;
Nisshinbo Tempest, Inc., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01Q / ; B32B / ;
U.S. Cl.
CPC ...
428159 ; 342-4 ; 4283166 ; 4283179 ; 4283191 ;
Abstract
A wave absorber comprising a foamed resin and a dielectric loss material dispersed therein, wherein the foamed resin is a foamed melamine resin obtained by foaming a resin composition comprising, as the main components, a melamine-formaldehyde condensate and a foaming agent. The wave absorber alleviates the problems of the prior art, and is lightweight and superior in self-extinguishing property, and shows an excellent wave-absorbing property owing to a uniformly dispersed dielectric loss material.