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. 16, 2005
Filed:
Aug. 01, 2000
Applicants:
John Richard Holland, Ormskirk, GB;
Karikath Sukumar Varma, Southport, GB;
David William Holden, Wigan, GB;
Inventors:
John Richard Holland, Ormskirk, GB;
Karikath Sukumar Varma, Southport, GB;
David William Holden, Wigan, GB;
Assignee:
Pilkington plc, St. Helens, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C04B012/04 ;
U.S. Cl.
CPC ...
Abstract
Novel waterglass compositions comprise a zirconium containing anionic aggregate, preferably potassium zirconium carbonate or ammonium zirconium carbonate, in a quantity sufficient to provide at least 0.5% as zirconium metal. The compositions can be dried and/or gelled to form optically clear interlayers useful in the production of fire resistant glass laminates. The incorporation of the zirconium containing aggregate improves the fire resistant performance of the laminates.