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. 06, 2007
Filed:
Mar. 08, 2006
Applicants:
Masayuki Ishikawa, Ebina, JP;
Atsushi Kiyohara, Chigasaki, JP;
Inventors:
Masayuki Ishikawa, Ebina, JP;
Atsushi Kiyohara, Chigasaki, JP;
Assignee:
Epson Toyocom Corporation, , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03L 1/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A temperature compensated piezoelectric oscillator includes: an oscillation circuit that drives a piezoelectric element with a current; a direct-current-stopping fixed capacitor; a frequency-temperature compensated circuit that compensates the deviation of an oscillation frequency caused by a change of temperature; and a piezoelectric transducer which includes a piezoelectric element driven in a prescribed frequency; where the above elements are connected serially.