The Crittenden Automotive Library

NGK

NGK
Vehicle Parts Manufacturer

External Links
Official Site: ngkntk.co.jp Wikipedia: NGK
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A manufacturer of spark plugs. NGK is an initialism of Nihon Gaishi kabushikigaisha. Founded 26 October 1936 and based in Nagoya, Japan.

History

The following section is an excerpt from Wikipedia's NGK page on 10 March 2021, text available via the Creative Commons Attribution-ShareAlike 3.0 Unported License.

The NGK Spark Plug Co., Ltd. is a public company established in 1936 and based in Nagoya, Japan. NGK manufactures and sells spark plugs and related products for internal combustion engines, along with ceramics and applicable products.

As of March 2007, the company employed 10,407 people, and operated a network of 7 liaison offices, 12 sales offices, 13 production sites and 2 technical centers worldwide. NGK Spark Plugs was founded as a spin-off of the spark plug division of NGK Insulators. Originally, NGK supplied most of its products to Japanese automakers.

In 2018 the company became a shareholder of aftermarket data firm TecAlliance.

NGK stands for Nihon Gaishi kabushikigaisha, the Japanese name of NGK Insulators.

Advertisements

Subject: NGK Advertisement
Source: Motor Trend
Date: August 1965
View 1965 NGK Advertisement - 1,359KB

Documents

Date	Document Name & Details	Documents
3 July 2012	Devices for Detecting Accumulation Amount of Particulates United States Patent US 8,210,033 B2 Jungo Kondo, Keiji Matsuhiro, Kenji Aoki, and Atsuo Kondo for NGK Insulators, Ltd.	PDF - 899KB - 11 pages
16 July 2013	Bonding Agent Comprising Spherical Sintered Metal Oxide Powder United States Patent US 8,486,328 Makoto Ohmori, Toshiyuki Nakamura, and Takashi Ryu for NGK Insulators, Ltd.	PDF - 4.8MB - 20 pages
6 August 2013	Method for Producting Group III Nitride Semiconductor United States Patent US 8,501,141 Takayuki Sato, Seiji Nagai, Makoto Iwai, Shuhei Higashihara, Yusuke Mori, and Yasuo Kitaoka for Toyota Gosei Co., Ltd., NGK Insulators, Ltd., and Osaka University	PDF - 782KB - 12 pages
6 August 2013	Solid Electrolyte Fuel Cell Stack United States Patent US 8,501,365 Hideki Uematsu, Masahiro Shibata, Hiroshi Sumi, Hiroya Ishikawa and Keizo Furusaki for NGK Spark Plug Co., Ltd.	PDF - 1.1MB - 20 pages
3 September 2015 filing date	United States of America v. NGK Insulators, Ltd. Information United States District Court, Eastern District of Michigan	PDF - 210KB - 8 pages

Article Index

Date	Article	Author/Source
19 August 2014	NGK Spark Plug Co. Ltd. Agrees to Plead Guilty to Price Fixing and Bid Rigging on Automobile Parts Installed in U.S. Cars	U.S. Department of Justice
3 September 2015	NGK Insulators Ltd. to Pay $65.3 Million for Fixing Prices on Auto Parts	Department of Justice, Office of Public Affairs
21 May 2015	Current and Former Executives of an Automotive Parts Manufacturer Indicted for Roles in Conspiracy to Fix Prices - Investigation Has Resulted in Charges Against 90 Individuals and Corporations	Department of Justice, Office of Public Affairs