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. 23, 2010
Filed:
Sep. 20, 2007
Paul A. Wagner, San Carlos, CA (US);
Igal Ladabaum, San Carlos, CA (US);
Kathy J. Jackson, Felton, CA (US);
Paul A. Wagner, San Carlos, CA (US);
Igal Ladabaum, San Carlos, CA (US);
Kathy J. Jackson, Felton, CA (US);
Siemens Medical Solutions USA, Inc., Malvern, PA (US);
Abstract
In a capacitive membrane ultrasound transducer, one or more electrodes include multiple layers of conductive or semiconductive material. The layers may be positioned adjacent an insulator or cavity in an arrangement to reduce electrical degradation. For example, a conductive layer with less work function and less resistivity is spaced from an insulator by a conductive layer with more work function and more resistivity. The different layers of electrode material may provide for less electrical degradation due to the type of material used and relative location.