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. 24, 2009
Filed:
Sep. 13, 2007
Jean-francois Gelly, Mougins, FR;
David Martin Mills, Niskayuna, NY (US);
Frederic Lanteri, Le Cannet, FR;
Charles Edward Baumgartner, Niskayuna, NY (US);
Serge Gerard Calisti, Bouches du Rhone, FR;
Jean-Francois Gelly, Mougins, FR;
David Martin Mills, Niskayuna, NY (US);
Frederic Lanteri, Le Cannet, FR;
Charles Edward Baumgartner, Niskayuna, NY (US);
Serge Gerard Calisti, Bouches du Rhone, FR;
General Electric Company, Schenectady, NY (US);
Abstract
A method for manufacturing an acoustical stack for use within an ultrasound transducer comprises using a user defined center operating frequency of an ultrasound transducer that is at least about 2.9 MHz. A piezoelectric material and a dematching material are joined with an assembly material to form an acoustical connection therebetween. The piezoelectric material has a first acoustical impedance and *at least one of* an associated piezoelectric rugosity (Ra) and piezoelectric waviness (Wa). The dematching material has a second acoustical impedance that is different than the first acoustical impedance and at least one of an associated dematching Ra and dematching Wa. The piezoelectric and dematching materials have an impedance ratio of at least 2. The assembly material has a thickness that is based on the center operating frequency and at least one of the piezoelectric Ra, piezoelectric Wa, dematching Ra and dematching Wa.