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:
Dec. 23, 2003
Filed:
Sep. 20, 2002
Applicant:
Inventors:
William Thoru Kobayashi, Sao Paulo, BR;
Elson Longo Da Silva, Sao Carlos, BR;
Carlos Alberto Paskocimas, Sao Carlos, BR;
Assignee:
Praxair Technology, Inc., Danbury, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B05D 3/02 ;
U.S. Cl.
CPC ...
B05D 3/02 ;
Abstract
Silica-based refractories are impregnated with protective material that is more resistant towards attack by corrosive species. The protective material coats the surface of the refractory matrix and fills some of the cavity volume of its pores, crevices, surfaces imperfections and irregularities. The protective material is positioned by impregnating the refractory with a precursor which, under the input of energy, is converted into the corrosion resistant protective material.