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:
Sep. 29, 1981
Filed:
Jun. 01, 1979
Applicant:
Inventors:
Joseph P Barone, Baltimore, MD (US);
Sergio A Loynaz, Baltimore, MD (US);
Frederick W Bauer, Bethesda, MD (US);
Assignee:
Martin Marietta Corporation, Bethesda, MD (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C09K / ;
U.S. Cl.
CPC ...
252 62 ; 162159 ; 252-81 ; 252607 ;
Abstract
Fire retardant properties are provided for cellulose insulation materials by the addition of a fire retardant composition comprising from 60 to 85% of bauxite, from 5 to 30% dolomite, and from 5 to 30% boric acid. Loading factors of from about 20 to about 35% fire retardant are effective to meet applicable federal specifications for flame spread and smoldering.