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. 12, 2005
Filed:
Oct. 21, 2002
Lawrence Bernard Kool, Clifton Park, NY (US);
Stephen Joseph Ferrigno, Cincinnati, OH (US);
Robert George Zimmerman, Jr., Morrow, OH (US);
Mark Alan Rosenzweig, Hamilton, OH (US);
Curtis Alan Johnson, Schenectady, NY (US);
Lawrence Bernard Kool, Clifton Park, NY (US);
Stephen Joseph Ferrigno, Cincinnati, OH (US);
Robert George Zimmerman, Jr., Morrow, OH (US);
Mark Alan Rosenzweig, Hamilton, OH (US);
Curtis Alan Johnson, Schenectady, NY (US);
General Electric Company, Niskayuna, NY (US);
Abstract
A process for removing aluminosilicate-based material (e.g., 'CMAS') from a substrate is described. The material is treated with an aqueous composition containing at least one acid having the formula HAF, in which A is Si, Ge, Ti, Zr, Al, and Ga; and x is 1-6. Treatment of the substrate is often carried out by immersion in an aqueous bath. The process is also very effective for removing CMAS-type material from cavities in the substrate, e.g., cooling holes in a gas turbine component. Related compositions are also described.