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:
Jan. 08, 1991
Filed:
Dec. 30, 1988
Applicant:
Inventors:
Gerhard Holzer, Aachen, DE;
Udo Gelderie, Aachen, DE;
Assignee:
Saint Gobain Vitrage, Courbevoie, FR;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B32B / ;
U.S. Cl.
CPC ...
428442 ; 428412 ; 428426 ; 428913 ; 428921 ; 428436 ;
Abstract
An anti-fire glazing composed of two sheets of glass maintained separated by a sealed intermediate peripheral frame, between which an aqueous solution containing a dissolved salt and a gelling agent has been placed. After filling, the solution is transformed into an aqueous gel, the aqueous phase of which contains the salt in solution, and the solid phase of which is a polymer. The gelling polymer is a cross-linked polyvinyl alcohol. A dialdehyde is used as the cross-linking agent.