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:
Nov. 11, 1980
Filed:
Dec. 18, 1978
Applicant:
Inventors:
Jean-Pierre Blanc, Antony, FR;
Francois Meiller, Palaiseau, FR;
Assignee:
Rhone-Poulenc Industries, Paris, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B28B / ;
U.S. Cl.
CPC ...
106 3835 ; 106 383 ; 106 84 ;
Abstract
Foundry mold and core compositions comprising sand, a silicate binder and a hardening agent include an alumina 'demolding' agent having an average grain size distribution of less than 40.mu., preferably between 0.2 and 5.mu..