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. 23, 1994
Filed:
Feb. 26, 1993
Applicant:
Inventors:
Chia-Chih Ou, Lexington, MA (US);
Leon Bablouzian, Framingham, MA (US);
Assignee:
W. R. Grace & Co.-Conn., New York, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
C08K / ; C09D / ; C09K / ; C09K / ;
U.S. Cl.
CPC ...
428283 ; 29890 ; 106122 ; 422177 ; 428289 ; 428290 ; 428331 ; 428446 ; 428457 ; 428920 ; 523138 ; 523179 ;
Abstract
Intumescent sheets are having improved expansion characteristics are disclosed. The intumescent sheets comprise an inorganic fibrous material, a binder, and a heat expandable layer mineral composition containing at least 87.5% by weight of heat expandable interstratified layer minerals comprising interstratified layers of vermiculite and biotite.