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:
Jul. 06, 1993
Filed:
Jul. 17, 1991
Applicant:
Inventors:
Lorenz Dotsch, Vallendar, DE;
Helmut Preyer, Kurtscheid, DE;
Frich Renfordt, Urmitz, DE;
Jean-Louis Retrayt, Neuwied, DE;
Assignee:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B05D / ; B05D / ;
U.S. Cl.
CPC ...
427294 ; 264 291 ; 264-4 ; 427300 ; 427314 ;
Abstract
A process for producing a plug with increased resistance to infiltration and oriented porosity for use in metallurgical melting crucibles, in which the matrix material of the plug is subjected to an impregnating treatment.