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:
Nov. 21, 2000
Filed:
Feb. 18, 1999
Applicant:
Inventors:
Craig Donald DePorter, Denver, CO (US);
Steven Douglas Dawson, Denver, CO (US);
Mauro Vittorio Battaglioli, Lone Tree, CO (US);
Christopher Paul Sandoval, Littleton, CO (US);
Assignee:
Johns Manville International, Inc., Denver, CO (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D21J / ; D21H / ; E04B / ; C08L / ;
U.S. Cl.
CPC ...
252 62 ; 162171 ; 162145 ; 162175 ; 162147 ; 1621813 ; 1621817 ; 106122 ; 106282 ; 1061645 ; 10616453 ; 1061646 ; 10620401 ; 106D / ; 106D / ; 106283 ; 428403 ; 428407 ;
Abstract
An insulation board suitable for use as a roof insulating board has a density between about 8 and about 15 pounds per cubic foot; a MOR/density ratio of at least 10.5 to 1 and includes, by dry weight, between about 45% and about 76% expanded perlite; between about 15% and about 45% cellulosic fibers; between about 0.1% and about 10% latex binder; between about 2% and about 9% bituminous material; and about 0% to about 3% alum.