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:
May. 21, 1996
Filed:
Apr. 12, 1995
Applicant:
Inventor:
Randall C Ragan, Rancho Santa fe, CA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C03C / ;
U.S. Cl.
CPC ...
501 32 ; 501 19 ; 264 56 ; 264 60 ; 428432 ; 428433 ; 428688 ;
Abstract
This invention provides a hard, strong ceramic body and method of manufacture whereby the body, after being formed into the desired shape and size can then be fired into a monolithic structure without any shrinkage or distortion during the firing operation. The 'green,' unfired ceramic composition comprises one or more powdered refractories and one or more powdered glasses which have a melting point below the softening point of the selected refractory material. Preferred refractories are alumina and zirconia; preferred glasses are lead borosilicate and barium borosilicate. The composition may also contain a metal powder.