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. 13, 2012
Filed:
Jul. 04, 2010
Betty Mireya Leon Fong, Nigran, ES;
Aldara Pan Cabo, Vigo, ES;
Stefano Chiussi, Vigo, ES;
Esther Rebollar Gonzalez, Vigo, ES;
Julia DE LA Asuncion Serra Rodriguez, Vigo, ES;
Pio Manuel Gonzalez Fernandez, Vigo, ES;
Betty Mireya Leon Fong, Nigran, ES;
Aldara Pan Cabo, Vigo, ES;
Stefano Chiussi, Vigo, ES;
Esther Rebollar Gonzalez, Vigo, ES;
Julia De La Asuncion Serra Rodriguez, Vigo, ES;
Pio Manuel Gonzalez Fernandez, Vigo, ES;
Universidade de Vigo, Vigo, ES;
Abstract
Disclosed embodiments include methods for cleaning wax, substantially equivalent impurities, and other contaminants from porous stones in historical monuments and artworks using nondestructive means. According to one embodiment the method for removal of contaminants from porous stones using laser comprises the following method steps: (a) identifying regions of a contaminant on the porous stone monument; (b) characterizing the contaminant on the porous stone monument; (c) exposing the contaminant on the porous stone monument to irradiation from a laser characterized by a wavelength, a pulse length, a repetition rate, and a laser energy fluence determined and optimized for a given contaminant-porous stone system and the laser characteristics; and (d) adaptively evaluating the cleaning results by quantifying the thickness of the remaining contaminant.