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:
Mar. 06, 2012
Filed:
Feb. 29, 2008
Jian Zhong Zhao, Laveen, AZ (US);
Alan Chi-chung Tai, Phoenix, AZ (US);
Dwayne Quatier, Chandler, AZ (US);
Kevin Mahoney, Phoenix, AZ (US);
Jian Zhong Zhao, Laveen, AZ (US);
Alan Chi-Chung Tai, Phoenix, AZ (US);
Dwayne Quatier, Chandler, AZ (US);
Kevin Mahoney, Phoenix, AZ (US);
General Electric Company, Schenectady, NY (US);
Abstract
An acoustical stack for use within an ultrasound transducer that has a center frequency has a poled piezoelectric material layer and at least one impedance matching layer. The poled piezoelectric material layer has top and bottom sides and is formed of poled piezoelectric material that has a first acoustic impedance. The poled piezoelectric material layer has a first thickness and the acoustical stack has an output electrical impedance based on the first thickness. The impedance matching layers are configured to be attached to the top and bottom sides of the poled piezoelectric material layer and have second or third thicknesses. The impedance matching layers are formed of one or more materials that have an acoustic impedance substantially similar to the first acoustic impedance. The poled piezoelectric layer and impedance matching layers form an acoustic resonance thickness. The center frequency of the transducer is based on the acoustic resonance thickness.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile