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:
Jun. 26, 2018
Filed:
Jan. 07, 2015
Ngk Spark Plug Co., Ltd., Nagoya-shi, Aichi, JP;
Takeshi Sugiyama, Ichinomiya, JP;
Masayuki Motomura, Komaki, JP;
Norimasa Osawa, Aichi, JP;
Keisuke Tashima, Kasugai, JP;
Hirokazu Murase, Nisshin, JP;
Toshiya Matsuoka, Gifu, JP;
NGK SPARK PLUG CO., LTD., Aichi, JP;
Abstract
A particulate sensor () includes an ion source () and a reference potential member (). The particulate sensor () detects particulates S contained in a gas under measurement EG by means of ions CP. The ion source () includes a ceramic structure () having a ceramic laminate () and a discharge electrode member (). The discharge electrode member () has an inter-layer portion (A,) embedded between the layers of the ceramic laminate () and an exposed portion (B) extending from the inter-layer portion (A,) to a position outside the ceramic laminate (). The discharge electrode member () generates the gaseous discharge between the reference potential member () and the exposed portion (B) including one or more needle-shaped distal end portions () upon application of a constant DC discharge potential PV