ABOUT

NTKJ President
Koichi Sato

Vision

Overview

Company Name
NTKJ Co., Ltd.
(Nihon Tokushu Kogaku Jushi Co., Ltd.)
Board of Directors
President: Koichi Sato
Location
Headquarters
2-16-10 Hasune, Itabashi-ku, Tokyo 174-0046

Kumagaya Factory
138-6 Miizugahara, Kumagaya-shi, Saitama 360-0844
Capital
10 million yen
Inaugurated
1 April 1974
Established
21 June 1978
Activities
Manufactures and sells plastic lenses
Main Banks
MUFG Bank, Ltd. (Shimura Branch)
Sumitomo Mitsui Banking Corporation (Takashimadaira Branch)
Mizuho Bank (Shimura Branch)
Japan Finance Corporation (Ikebukuro Branch)
THE SUGAMO SHINKIN BANK (Takashimadaira Branch)
Major Clients
ANZEN MOTOR CAR CO., LTD.
Olympus Corporation
JVC KENWOOD Corporation
STANLEY ELECTRIC CO., LTD.
Sony Corporation
SCREEN Graphic Solutions Co., Ltd.
TOSHIBA CORPORATION
TOSHIBA LIGHTING AND TECHNOLOGYCORPORATION
TOPCON CORPORATION
NIKON CORPORATION
Japan Broadcasting Corporation
Panasonic Corporation
Mitsubishi Chemical Corporation
Watanabe Electric Industry Co., Ltd.
KONICA MINOLTA, INC.
Yazaki Corporation
Kyoto Denkiki Co., Ltd.

History

April 1974
Osamu Sato founded the Japan Optical Technology Research Institute in Kawaguchi City, Saitama Prefecture.
June 1978
The institute was reorganized into a limited company named Nihon Tokushu Kogaku Jushi Co., Ltd.
Capital: 3 million yen
The head office and plant were relocated to Itabashi-ku, Tokyo.
February 1982
A new plant was established in Shingashi, Itabashi-ku, Tokyo, and the head office was relocated to the same address.
July 1984
Capital was increased to 9 million yen.
February 1986
The Kumagaya Mold Factory, located in Miizugahara, Kumagaya City, Saitama Prefecture, was established.
July 1992
Capital was increased to 10 million yen.
May 1997
A new molding factory was established in Gyoda City, Saitama Prefecture.
October 2005
The Gyoda Factory was relocated and expanded to become the Kumagaya Molding Factory.
July 2012
NTKJ’s research and development plan for “The large mold manufacturing and molding method development” was approved by Japanese government’s “Act on Enhancement of Small and Medium Sized Enterprises’ Core Manufacturing Technology.”
July 2012
NTKJ’s development plan for a “Germanium Fresnel lens” was approved by the local government of Itabashi-ku for the “Act on New Product and Technology development challenge.”
October 2012
Koichi Sato was appointed as the President. The former President Osamu Sato was named as Chairman.
April 2013
NTKJ was granted the “Eco Action 21” Japanese environmental management system’s certificate.
May 2013
NTKJ’s technology development plan was subsidized by the Japanese government’s “act to support small and medium-sized enterprise manufacturers”
November 2013
NTKJ’s Germanium Fresnel lens received the Judges’ Special Award at the Itabashi’s Product and Technology Competition
February 2014
NTKJ’s headquarters were relocated to 2-16-10 Hasune, Itabashi-ku, Tokyo.
November 2014
NTKJ’s elliptical Fresnel lens received an honorable mention at the Itabashi Product and Technology Competition

Location

NTKJ Headquarters

2-16-10 Hasune, Itabashi-ku, Tokyo 174-0046

Directions from Narita Airport: Take the Keisei Line to Nippori Station. At Nippori Station, change to the Yamanote Line and get off at Sugamo Station. From Sugamo Station, take the Mita Subway Line to Hasune Station.

Directions from Haneda Airport: Take the Keikyu Line (this will eventually become the Asakusa Line) and get off at Mita Station. Then, take the Mita Subway Line to Hasune Station.

Kumagaya Factory

138-6 Miizugahara, Kumagaya-shi, Saitama 360-0844

Directions from Narita Airport: Take the Keisei Line to Keisei Ueno Station. Walk to Ueno Station, and catch the Takasaki Line to Kagohara Station.

Directions from Haneda Airport: Take the Keikyu Line to Shinagawa Station. At Shinagawa Station, take the Tokaido/Takasaki Line to Kagohara Station.