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:
Jun. 29, 1993
Filed:
Jan. 22, 1991
Applicant:
Inventors:
Gerhard Holzer, Aachen, DE;
Udo Gelderie, Aachen, DE;
Assignee:
Saint Gobain Vitrage International, Courbevoie, FR;
Primary Examiner:
Int. Cl.
CPC ...
E06B / ;
U.S. Cl.
CPC ...
428 34 ; 428192 ; 428913 ; 428920 ; 52788 ; 52789 ;
Abstract
In a fire-resistant glazing consisting of at least two parallel glass panes held apart from one another, between which is disposed a layer of a hydrogel, the aqueous phase of which contains a dissolved salt, the solid phase of the hydrogel consists of the polymerized compound 2-hydroxy-3methacryloxypropyltrimethylammonium chloride.