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. 15, 2012
Filed:
Jun. 29, 2009
Atsuo Kondo, Nagoya, JP;
Takeshi Sakuma, Nagoya, JP;
Takashi Egami, Nagoya, JP;
Tatsuya Okayama, Wako, JP;
Masanobu Miki, Wako, JP;
Keizo Iwama, Wako, JP;
Atsuo Kondo, Nagoya, JP;
Takeshi Sakuma, Nagoya, JP;
Takashi Egami, Nagoya, JP;
Tatsuya Okayama, Wako, JP;
Masanobu Miki, Wako, JP;
Keizo Iwama, Wako, JP;
NGK Insulators, Ltd., Nagoya, JP;
Honda Motor Co., Ltd., Minato-Ku, JP;
Abstract
A particulate matter detection deviceincludes a first electrodewhose one surface is covered with an inter-electrode dielectric material; a second electrodedisposed on the side of the one surface of the first electrode, to perform the discharge of electricity by a voltage applied between the first electrodeand the second electrode; and a pair of measurement electrodesdisposed on the surface of the inter-electrode dielectric materialso as to face each other; characteristic measurement meansfor measuring electric characteristics between the pair of measurement electrodesand; and particulate matter amount calculation meansfor obtaining the amount of the particulate mattercollected by the surface of the inter-electrode dielectric material, based on the change amount of the electric characteristics.