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:
May. 19, 1992
Filed:
Nov. 20, 1989
Morris A Mendelsohn, Wilkins Twp., Allegheny County, PA (US);
Francis W Navish, Jr, East Pittsburgh, PA (US);
Richard Bolton, Saratoga, CA (US);
Westinghouse Electric Corp., Pittsburgh, PA (US);
Abstract
An acoustic foam composition comprising (a) about 1 equivalent of a polybutadiene based polyol (b) about 2.5 to 7.5 equivalents of a diisocyante (c) or low molecular weight diol which gives a balanced stoichiometry and (d) about 1.5 to 6% by weight based on the total weight of the composition of hollow polymeric microspheres. The composition may be prepared by a one-step system or a prepolymer system. The foam compositions of the present invention has excellent acoustic properties.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile