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:
Jan. 31, 2017
Filed:
May. 15, 2015
Applicant:
Halliburton Energy Services, Inc., Houston, TX (US);
Inventors:
George David Goodman, Phoenixville, PA (US);
Voldi E. Maki, Jr., Austin, TX (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B06B 1/06 (2006.01); G01V 1/02 (2006.01); G10K 11/02 (2006.01); G01V 1/40 (2006.01);
U.S. Cl.
CPC ...
B06B 1/067 (2013.01); B06B 1/0625 (2013.01); B06B 1/0633 (2013.01); G01V 1/159 (2013.01); G10K 11/02 (2013.01); G01V 1/40 (2013.01);
Abstract
A piezoelectric transducer is mounted in a housing. An impedance matching layer is provided between the piezoelectric transducer and the housing. The impedance matching layer includes high-permittivity regions that have a first permittivity, and low-permittivity regions that separate the high-permittivity regions and have a second permittivity. The second permittivity is lower than the first permittivity.