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, 1981
Filed:
Nov. 23, 1979
Applicant:
Inventor:
William G Toland, San Rafael, CA (US);
Assignee:
Chevron Research Company, San Francisco, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
B32B / ; D06N / ;
U.S. Cl.
CPC ...
428281 ; 428283 ; 428285 ; 428288 ; 428289 ; 428290 ; 428291 ; 428921 ;
Abstract
Sulfur-based roof shingles which consist essentially of a fibrous base mat coated on at least one surface with a plasticized-sulfur composition were found to have surprising flexibility and fire resistance when compared to similar asphalt shingles.