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. 04, 2021
Filed:
Feb. 21, 2017
Citizen Finedevice Co., Ltd., Yamanashi, JP;
Citizen Watch Co., Ltd., Nishitokyo, JP;
Yuta Kanamori, Minamitsuru-gun, JP;
Masanori Yomoyama, Minamitsuru-gun, JP;
Tetsuya Aiba, Minamitsuru-gun, JP;
Ikuo Takahashi, Minamitsuru-gun, JP;
Hiroshi Nakagawa, Minamitsuru-gun, JP;
Kazuo Takahashi, Minamitsuru-gun, JP;
Yusuke Satoh, Minamitsuru-gun, JP;
CITIZEN FINEDEVICE CO., LTD., Fujikawaguchiko-machi, JP;
CITIZEN WATCH CO., LTD., Nishitokyo, JP;
Abstract
A pressure detection device includes: a piezoelectric element that detects a pressure change via a diaphragm head or the like; a circuit board that is provided with a processing circuit that performs electrical processing with respect to a charge signal outputted from the piezoelectric element; a conductive housing member, which has conductivity and is disposed to cover (house) the circuit board, and which is connected to the ground of the circuit board; and a housing (a leading end side housing, the diaphragm head and a rear end side housing), which houses the piezoelectric element, the circuit board and the housing member, and which is electrically insulated from the piezoelectric element, the circuit board and the housing member.