History
- July 1969
- Founded as ELCO Co., Ltd. (Capital 2.5 million yen)
ELCO stood for "Electronics" and "Control" – our main business being the use of electronics to control devices.
- February 1970
- Opened Tokyo Sales Office
- July 1973
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Built two-story steel-framed Head Office (total floor area 607 m2) in Kami-Akae Machi, Toyama City, Toyama Prefecture (area 3,487 m2)
- August 1977
- Opened Osaka Sales Office
- April 1978
- Introduced QC Circle activities
Began with 16 circles.
- June 1978
- Began to specialize in switching power supply business.
- July 1980
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Acquired 5,502 m2 of land next door to Head Office, and began operations at three-story, steel-framed 2,723 m2 plant.
- May 1982
- Introduced TQC (Total Quality Control)
- June 1983
- Opened Nagoya Sales Office
Introduced Policy Management (definition of Long-term Policy and Annual Policy)
- March 1988
- Introduced TPS（Toyota Production System）
- March 1989
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Completed Tateyama Factory in Tateyama Machi, Toyama Prefecture
- May 1990
- U.S.ELCO., INC. (now COSEL U.S.A., INC.) is founded.
Founded in San Jose, California, a city renowned for its high-tech industry and startups.
- September 1990
- Opened Kyoto Sales Office
- April 1992
-
Company name changed from ELCO Co., Ltd. to COSEL Co., Ltd.
- Co: Co-Organization
- S: System
- E: Electronics
- L: Liveliness
The initials from these four concepts were taken to make the Company name.
- June 1993
- Accredited under International Standard ISO 9001, relating to quality control and quality assurance (the first accreditation in Toyama Prefecture).
- December 1994
- Shares in the Company registered.
Additional financing brought capital to 2.055 billion yen.
- May 1996
- Introduced TPM（Total Productive Maintenance）
- July 1997
- Established COSEL EUROPE GmbH, a sales subsidiary in Germany.
- May 1998
- Established COSEL ASIA LTD., a sales subsidiary in Hong Kong.
- January 1999
- Shares listed on the Tokyo Stock Exchange and Nagoya Stock Exchange Market Division 2.
- November 1999
- Won TPM Excellence 1st Category.
- December 1999
- Acquired accreditation under International Standard ISO 14001, relating to environmental activities.
- May 2000
- Shares listed on the Tokyo Stock Exchange and Nagoya Stock Exchange Market Division 1.
- May 2002
-
Head Office extended to a four-story, steel-framed building (total area 3,842.36 m2).
- November 2002
- Established COSEL Shanghai Electronics Co., Ltd., a sales subsidiary in Shanghai, China.
- December 2004
- Group-wide Quality Control (GWQC) activities begin, to include partner companies.
- March 2005
- Began EMI filter business.
- December 2005
- Won the QC Circle Ishikawa Kaoru Award for the first time.
- February 2006
- Completed compliance with RoHS instructions.
- October 2006
- Won the QC Circle Managers Award.
- May 2007
-
Tateyama Factory extended to a two-story, steel-framed building (total area 5,259.68 m2).
- February 2008
- Won the Gold Award at the JHS All-Japan QC Circle Championships.
- December 2011
- Established WUXI COSEL ELECTRONICS CO., LTD., a manufacturing subsidiary in Jiangsu Province, China.
- July 2018
- Acquired Powerbox International AB.
- August 2018
-
Built R&D Center (five-story steel-framed, total floor area 8,205.67㎡) in KamiAkae Machi, Toyama City.
- April 2022
- Shares transferred from first section to Prime Market of the Tokyo Stock Exchange due to reorganization of TSE market categories.
- August 2022
- Transitioned from a company with a board of auditors to one with an audit and supervisory committee.
- April 2024
- Signed Capital and Business Alliance agreement with LITE-ON TECHNOLOGY CORPORATION.
- July 2024
- Capital increased to 6.04B JPY by additional financing through Capital and Business Alliance with LITE-ON TECHNOLOGY CORPORATION.