| 1896 |
May |
The first President and company founder, Yoshihira Wada began business in Haramachi, Bunkyo-ku, Tokyo, and commenced manufacturing of pressure gauges and related products (at the first gauge factory in Japan). |
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| 1917 |
May |
The company was reorganized as Tokyo Keiki Seisakusho Co., Ltd. |
| 1948 |
December |
Tokyo Keiki Seisakusho Co., Ltd. was liquidated and divided into Nagano Keiki Seisakusho Co., Ltd. and Tokyo Keiki Seisakusho Co., Ltd. (currently TOKYO KEIKI INC.). Head office and factories were located in Komoro-machi (currently Komoro-shi), Nagano-ken, with 5 million yen in capital. |
| 1951 |
Octorber |
Head office and factories were relocated to Ueda, Ueda-shi. |
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| 1954 |
May |
Granted status as Japanese Industrial Standard Pressure Gauge Factory. |
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August |
Designation as Measurement Control Model Factory. |
| 1957 |
May |
Designation as a First Class Instrument Using Workplace. |
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| 1958 |
January |
The Tokyo Factory was established in Chuo, Ohta-ku, Tokyo. |
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| 1964 |
March |
The first phase of the construction of the Akiwa Factory was completed at Akiwa, Ueda-shi, Nagano-ken. Tokico Instrument Co., Ltd. (currently Hitachi Automotive Systems & Nagano, LTD.) was established through a joint venture with Tokico Co., Ltd. (currently Hitachi Astemo, Ltd.) and the sales of both companies’ products commenced. |
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May |
Nagano Keiki Service Co., Ltd. (currently NAGANO KEISO CO., LTD. was established by spinning off the maintenance division. |
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December |
The second phase of the construction of the Akiwa factory was completed. The Ueda factory (currently Ueda Measuring Instruments factory) was relocated. |
| 1965 |
August |
Authorized as Bourdon Tube Pressure Gauge and Mercury Filled Thermometer Factory. (JIS standard was authorized by the Ministry of International Trade and Industry.) |
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| 1966 |
December |
The third phase of construction of Ueda Measuring Instruments factory was completed. The head office was relocated to Akiwa, Ueda-shi. Nagano Hanyo Keiki Mfg. Co., Ltd. was established. |
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| 1976 |
June |
The Head Office was transferred to Higashimagome, Ohta-ku, Tokyo. |
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| 1978 |
July |
Nagano Co., Ltd. was established by separation from the Tokyo factory. |
| 1988 |
September |
Acquired capital in Mahshin Co., Ltd (currently Yoshitomi-Mahshin Co., Ltd.). |
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November |
An engineering and sales agreement for pressure sensors was made with the Instruments Division of Dresser, Inc., U.S.A. (currently Ashcroft-Nagano Keiki Holdings, Inc.). |
| 1989 |
February |
Acquisition of capital in Nagano-ken Housou Shiza Co., Ltd. (currently Epoch Nagano Co., Ltd.). The production and sales of ceramic products commenced. |
|
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July |
Acquisition of capital in Yoshitomi Co., Ltd (currently Yoshitomi-Mahshin Co., Ltd.). |
|
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November |
The first phase of construction of the Maruko Electronic Instruments Factory was completed at Maruko-machi, Nagano-ken. Full scale production of pressure sensors commenced. |
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| 1991 |
January |
Dresser-Nagano, Inc. (currently Ashcroft-Nagano, Inc.) was established in California, U.S.A., through a joint-venture with Dresser, Inc., U.S.A. |
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| 1995 |
February |
Received the “Sasakawa Special Award for Inventions” from the Japan Society for the Advancement of Inventions Foundation, currently Society for the Advancement of Inventions (Public Interest Incorporated Foundation). Ueda Measuring Instruments factory and Maruko Electronic Instruments Factory obtained ISO 9001 certification. |
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| 1996 |
Octorber |
A technological transfer and license agreement was made and entered into for high-pressure-related sensing technology with Delco Electronics (currently Delphi Automotive Systems), U.S.A. |
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| 1997 |
January |
The second phase of the construction of the Maruko Electronics Instruments Factory was completed. |
 |
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July |
The company name was changed to NAGANO KEIKI CO., LTD. |
| 1998 |
September |
A technological transfer and license agreement was made and entered into with Robert Bosch GmbH, Germany, regarding high-pressure sensing technology. |
|
Octorber |
The new construction of the headquarters building was completed. |
|
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December |
Company Stocks were sold as over-the-counter stocks. Accreditation regarding the official proofreader for calibration of dead weight type pressure gauge was granted by JACSS (The Japan Calibration Service System). |
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| 1999 |
December |
Sensor sub-assembly sales agreement was made and entered with Texas Instruments, U.S.A. |
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| 2000 |
December |
The Ueda Measuring Instruments Factory and the Maruko Electronic Instruments Factory obtained ISO14001 certification. ADZ NAGANO GmbH was established through a joint-venture with ADZ, Germany. |
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| 2003 |
January |
Received the “Nikkei Best Product Service Award in 2002” for KA series “small size pressure sensor for automotive applications”. |
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4月 |
FUKUDA CO., LTD. became a wholly owned subsidiary of NAGANO KEIKI CO., LTD. |
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September |
Establishment of a resident office in Europe in Dresden, Sachsen, Germany. |
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| 2004 |
March |
ZA Co, Ltd. (currently NAGANO KEISO CO., LTD.) became a wholly owned subsidiary of NAGANO KEIKI CO., LTD. |
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| 2005 |
February |
NAGANO KEIKI CO., LTD. was listed on the second section of the Tokyo Stock Exchange. |
 |
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May |
The Nagano Keiki Solutions Support Center (NSSC) was established in Ottendorf-Okrilla, Sachsen, Germany. |
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August |
The Maruko Electronic Instruments Factory obtained ISO/TS 16949: 2002 certification from the Japan Gas Appliances Inspection Association. |
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September |
Sun Cast Co., Ltd. became a wholly owned subsidiary of NAGANO KEIKI CO., LTD. Nagano Keiki Technical Solutions Center was opened in Ikuta, Ueda-shi. |
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| 2006 |
May |
Ashcroft Holdings,Inc.（currently Ashcroft-Nagano Keiki Holdings,Inc.）became a wholly owned subsidiary of Nagano Keiki Co., Ltd. |
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| 2007 |
4月 |
NAGANO KEIKI CO., LTD. was listed on the 1st section of the Tokyo of the Tokyo Stock Exchange |
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| 2008 |
February |
S3C, Inc. (Sunnyvale, California) became a subsidiary of NAGANO KEIKI CO., LTD. |
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April |
New-Era Co., Ltd. became a wholly owned subsidiary of NAGANO KEIKI CO., LTD. |
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| 2009 |
April |
Yoshitomi Co., Ltd. merged with Mahshin Co., Ltd. and changed the company name to Yoshitomi Mahshin Co., Ltd. |
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July |
NAGANO KEISO CO., LTD. merged with ZA Co., Ltd. |
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| 2013 |
November |
An business alliance agreement was signed with Elmos Semiconductor AG, Germany and Silicon Microstructures Inc,, USA for the joint development and provision of ASIC and MEMS type pressure sensor elements. |
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| 2014 |
July |
Establishment of manufacturing joint venture, JADE Sensortechnik GmbH with Intelligente Sensorsysteme Dresden GmbH (i2s). |
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| 2017 |
July |
FUTABA SOKKI CO., LTD. became a wholly owned subsidiary of NAGANO KEIKI CO., LTD. |
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| 2019 |
January |
NAKAMURA-KANAGATA CO., LTD became a wholly owned subsidiary of NAGANO KEIKI CO., LTD. |
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