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:
Sep. 01, 2020
Filed:
Aug. 21, 2017
Applicant:
Nihon Dempa Kogyo Co., Ltd., Tokyo, JP;
Inventors:
Assignee:
NIHON DEMPA KOGYO CO., LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03H 3/02 (2006.01); H03H 9/19 (2006.01); H03H 9/13 (2006.01); H03H 9/05 (2006.01); H03H 3/04 (2006.01);
U.S. Cl.
CPC ...
H03H 9/132 (2013.01); H03H 3/02 (2013.01); H03H 9/0514 (2013.01); H03H 9/0528 (2013.01); H03H 9/19 (2013.01); H03H 2003/0428 (2013.01);
Abstract
A crystal resonator vibrates in a thickness-shear mode. The crystal resonator includes excitation electrodes being disposed on a front surface and a back surface of a crystal element. The excitation electrodes are disposed on the crystal element to have a positional relationship, where a displacement distribution at an edge of the excitation electrode on the front surface is identical to a displacement distribution at an edge of the excitation electrode on the back surface.