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:
Dec. 24, 1991
Filed:
Dec. 03, 1990
Applicant:
Inventors:
Fred M Sonnenberg, Merion, PA (US);
Joseph A Verdol, Philadelphia, PA (US);
Assignee:
Arco Chemical Technology, Inc., Wilmington, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08J / ; C08J / ;
U.S. Cl.
CPC ...
521 60 ; 264D / ; 521 56 ; 521 79 ; 521 81 ; 521 88 ; 521114 ; 521143 ; 521146 ; 521150 ; 521910 ;
Abstract
The use of tertiary ethers as blowing agent allows the preparation of lower density foams from many types of polymeric materials.