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:
Sep. 09, 2014
Filed:
May. 12, 2010
Francis Baillet, Paladru, FR;
Nicolas Gondrexon, Meylan, FR;
Francis Baillet, Paladru, FR;
Nicolas Gondrexon, Meylan, FR;
Institut Polytechnique de Grenoble, Grenoble Cedex, FR;
Universite Joseph Fourier, Saint Matin d'Heres, FR;
Abstract
The invention relates to a method for etching a structure () including at least one material () to be etched, said method consisting in: selecting at least one chemical species that can react with the material () to be etched; selecting at least one soluble compound that can release this chemical species; producing a solution () containing the compound and a powder of particles or solid grains () in suspension; placing the material to be etched in the presence of the solution; and producing high-frequency ultrasounds in the solution, at at least one frequency, capable of generating active cavitation bubbles such that the chemical species is generated and reacts with the material to be etched, thereby producing a soluble compound or a precipitate.