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:
Aug. 03, 1993
Filed:
Apr. 06, 1992
Applicant:
Inventors:
Alfred B Malmquist, Dallas, TX (US);
Matti Kiik, Dallas, TX (US);
Assignee:
Elk Corporation of Dallas, Dallas, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B32B / ; B32B / ; E04D / ;
U.S. Cl.
CPC ...
156 78 ; 523099 ; 52558 ; 52560 ; 156 79 ; 156182 ; 156250 ;
Abstract
An approved roofing shingle (10) and a method for its manufacture, are disclosed. The shingle incorporates an upper layer (12) of conventional asphaltic composite roofing material and a lower layer (14) of a polymer foam having a thickness between 1/16 inches and one inch. The foam effectively thickens the shingle to give a layered appearance to a roof using the shingle. The polymer foam can be applied by a free blown or froth process, or preformed and adhered to the composite material sheet by adhesive techniques.