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:
Aug. 30, 2005
Filed:
Feb. 27, 2001
Venkat Subramaniam Venkataramani, Clifton Park, NY (US);
Lionel Monty Levinson, Niskayuna, NY (US);
Lowell Scott Smith, Niskayuna, NY (US);
Venkat Subramaniam Venkataramani, Clifton Park, NY (US);
Lionel Monty Levinson, Niskayuna, NY (US);
Lowell Scott Smith, Niskayuna, NY (US);
General Electric Company, Niskayuna, NY (US);
Abstract
A matching layer for ultrasound transducers has a gradient in impedance value from one surface to the other surface of the matching layer. The matching layer is composed of a plurality of sublayers made of composite materials and securely attached together and is disposed on the surface of the transducer element. The first sublayer adjacent to the transducer element has an impedance value less than or equal to that of the transducer element. The last sublayer adjacent to the target has an impedance value greater than or equal to that of the target. The impedance values of the sublayers decrease monotonically from the first to the last sublayer.