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:
May. 17, 2022
Filed:
Sep. 30, 2020
Applicant:
Seiko Epson Corporation, Tokyo, JP;
Inventor:
Takayuki Yonemura, Nagano, JP;
Assignee:
SEIKO EPSON CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01F 23/26 (2022.01); G01F 23/263 (2022.01); B01L 3/00 (2006.01);
U.S. Cl.
CPC ...
G01F 23/265 (2013.01); B01L 3/52 (2013.01); G01F 23/268 (2013.01); B01L 2300/0645 (2013.01);
Abstract
A physical quantity detection device including a container that is formed with an accommodation space accommodating a detection object formed of a dielectric, a first electrode and at least one second electrode that face with each other via the accommodation space, and an electrostatic capacitance detector that detects an electrostatic capacitance between the first electrode and the second electrode by applying an alternating current voltage between the first electrode and the second electrode. A frequency of the alternating current voltage applied between the first electrode and the second electrode is 1 kHz or higher.