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. 14, 1990
Filed:
Oct. 06, 1989
Applicant:
Inventors:
Denis M Kelleher, Denver, CO (US);
Robert B Walters, Morrison, CO (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ;
U.S. Cl.
CPC ...
422110 ; 428141 ; 428142 ; 428247 ; 428284 ; 428287 ; 428332 ; 428492 ; 428495 ;
Abstract
An elastomeric composite membrane for use in construction installations wherein the membrane is in contact with an asphaltic component. The membrane comprises upper and lower sheets bonded together. The upper exposed sheet is resistant to weathering such as to moisture and ultraviolet rays, and in some cases to corrosive chemicals as well, while the lower sheet is compatible with asphalt. Preferably, the lower sheet is comprised of nitrile rubber, and the upper sheet is comprised of a rubber compound such as EPDM.