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. 30, 1976
Filed:
Aug. 04, 1975
Applicant:
Inventors:
Assignee:
Asahi Glasss Co., Ltd., Tokyo, JA;
Primary Examiner:
Int. Cl.
CPC ...
G10K / ;
U.S. Cl.
CPC ...
181 / ;
Abstract
A hard board containing a fiber web and a thermoplastic resin which composite is used as a noise absorption product is improved in that the surface and spaces between the fiber web are covered and filled with the resin, and wherein a plurality of finely formed crevices is formed in the resin covering the surface of the composite.