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:
Mar. 21, 1978
Filed:
Nov. 01, 1976
Applicant:
Inventors:
Murray George Briscoe, Eckington, EN;
Ronald Sidebottom, Cheltenham, EN;
John Edwin Smith, Horsham, EN;
David Brian George, Hatfield, EN;
David Watkin Price, Cheltenham, EN;
Assignee:
Coal Industry (Patents) Limited, London, EN;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08L / ;
U.S. Cl.
CPC ...
260 / ; 260 4247 ;
Abstract
The invention discloses a novel damp proof composition, suitable for making into sheets for roofing purposes, comprising (a) from 5 to 40% of a polychloroprene rubber, (b) pitch in an amount of up to 45%, and (c) at least 5% of a filler. The filler may be particulate or fibrous, and the composition may further include a supplementary polymer, for instance a nitrile rubber.