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. 02, 2007
Filed:
Mar. 18, 2004
Masako Tanaka, Okaya, JP;
Masako Tanaka, Okaya, JP;
Seiko Epson Corporation, , JP;
Abstract
A cut of a piezoelectric resonator uses a quartz plate having an electric axis, mechanical axis, and optic axis on an X axis, Y axis, and Z axis, respectively. An X' axis is set by rotating the X axis with an angle of 3–30 degrees in a clockwise direction about the Z axis. A Z′ axis is set by rotating the Z axis in the clockwise direction with an angle of 33–36 degrees about the X′ axis. The quartz plate has sides parallel to the X′ axis and Z′ axis, respectively. Furthermore, the plate has sides parallel to X″ axis and Z″ axis, respectively, which have been rotated in the clockwise direction with angles of from −35 degrees to −2 degrees about a Y′ axis that is the thickness direction of the cut of the piezoelectric resonator.