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:
Oct. 17, 2000
Filed:
May. 07, 1998
Applicant:
Inventors:
Steven N Crichton, Parma, OH (US);
Paolo Bertocchi, Reggio Emilia, IT;
Yuan Cao, San Angelo, TX (US);
Assignee:
Ferro Corporation, Cleveland, OH (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B32B / ;
U.S. Cl.
CPC ...
428 49 ; 4284256 ; 4284259 ; 428426 ; 428428 ; 428432 ;
Abstract
The present invention provides a glaze composition for use in forming glossy ceramic tiles which exhibit excellent scratch resistance. The glaze composition comprises a glass component that when fired produces a glaze layer containing oxides having a spinel crystalline structure and residual glass. The glaze displays an opaque or semiopaque finish.