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. 12, 2013
Filed:
Mar. 25, 2009
Kenji Fukumura, Obu, JP;
Tetsuo Yoshioka, Okazaki, JP;
Tetsuo Fujii, Toyohashi, JP;
Takaaki Kawai, Obu, JP;
Hirofumi Higuchi, Okazaki, JP;
Teruo Oda, Gamagori, JP;
Yasuyuki Okuda, Aichi-gun, JP;
Kenji Fukumura, Obu, JP;
Tetsuo Yoshioka, Okazaki, JP;
Tetsuo Fujii, Toyohashi, JP;
Takaaki Kawai, Obu, JP;
Hirofumi Higuchi, Okazaki, JP;
Teruo Oda, Gamagori, JP;
Yasuyuki Okuda, Aichi-gun, JP;
DENSO CORPORATION, Kariya, JP;
Abstract
A concentration sensor device includes a sensor unit, a substrate, and a sedimentation limit unit. The sensor unit detects a concentration of a specific component contained in liquid. The substrate has a face to which the sensor unit is arranged. The sedimentation limit unit is integrally arranged with the sensor unit or arranged at an upstream side of the sensor unit in a flowing direction of the liquid. The sedimentation limit unit is configured to prevent sedimentation of a foreign object on the sensor unit. The sedimentation limit unit includes a piezoelectric element to vibrate when electricity is supplied so as to promote the foreign object to be separated from the sensor unit. The substrate has a recess recessed in a thickness direction of the substrate.