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. 27, 1981
Filed:
Dec. 26, 1979
Applicant:
Inventors:
Glenn W Ledder, Buffalo, NY (US);
Wayne D Pasco, Ballston Spa, NY (US);
Paul S Svec, Scotia, NY (US);
Assignee:
General Electric Company, Schenectady, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
B28B / ;
U.S. Cl.
CPC ...
106 389 ; 106 65 ; 264 65 ;
Abstract
An alumina investment casting mold has a microstructure characterized by the porous nature of the interconnecting alumina grains which is indicative of alumina-silica molds fired in a reducing atmosphere to remove the silica.