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, 2012
Filed:
Feb. 08, 2010
Takashi Egami, Tokoname, JP;
Takeshi Sakuma, Nagoya, JP;
Masahiro Tokuda, Nagoya, JP;
Atsuo Kondo, Okazaki, JP;
Takashi Egami, Tokoname, JP;
Takeshi Sakuma, Nagoya, JP;
Masahiro Tokuda, Nagoya, JP;
Atsuo Kondo, Okazaki, JP;
NGK Insulators, Ltd., Nagoya, JP;
Abstract
A particulate matter detection device including a first electrode having one surface covered with a dielectric material; a second electrode which is disposed on the side of the one surface of the first electrode via a space where a gas including particulate matter flows and which performs one or both of the formation of a discharge and an electric field by a voltage applied between the first electrode and the second electrode; a pair of measurement electrodes disposed on the surface of the dielectric material so as to face each other; and a protective film disposed on the surfaces of the pair of measurement electrodes and having a volume resistivity of 10 Ωcm to 10Ωcm, where the variate of the electric properties between the pair of measurement electrodes is measured, and the amount of the collected particulate matter can be obtained.