| 1925 |
Founded in 1925 (Taisho 14) |
| 1940-06 |
Established: June 1940 |
| 1967-12 |
Established: December 1967 |
| 1984-09 |
Established: September 1984 |
| 1987-12 |
Established: December 1987 |
| 1990-07 |
Established: July 1990 |
| 1995-04 |
Established: April 1995 |
| 2000-09 |
Established: September 2000 |
| 2004-05 |
Established: May 2004 |
| 2007-06 |
Established: June 2007 |
| 2008-12 |
Established: December 2008 |
| 2010-11 |
Established: November 2010 |
| 2012 |
Impact caused by violation of US antitrust law discovered and punished by authorities in 2012 |
| 2012-02 |
Established: February 2012 |
| 2013-08 |
Established: August 2013 |
| 2014-12 |
Established: December 2014 |
| 2016 |
By 2016, in particular due to issues of so-called "capital, funds, and lawsuits," the company was in a state of de facto bankruptcy |
| 2016-06-24 |
On June 24, 2016, at the regular general meeting of shareholders, the company was taken back under the control of close associates through a motion for correction, and the president was reappointed by himself |
| 2016-10 |
In October 2016, the management philosophy was renewed and transitioned to a delegated executive officer system |
| 2017 |
In spring 2017, Project A, the development of ammonia combustion technology, was announced, aiming to deepen and expand this environmentally beneficial technology in collaboration with like-minded companies and organizations |
| 2018 |
In autumn 2018, a pure holding company was established through a share transfer (holding company formation) |
| 2018-06 |
In June 2018, unfortunately, the company filed for business reconstruction ADR, which is a form of bankruptcy |
| 2018-09 |
Diamond Electric Co., Ltd. established the company through a sole share transfer and listed its shares on the Second Section of the Tokyo Stock Exchange (Diamond Electric Co., Ltd. was delisted in September 2018) |
| 2018-10-01 |
Established: October 1, 2018 |
| 2020 |
In summer 2020, the phrase "weakness appears during tough times" reflects the feelings of regret and the hope for voluntary retirement, and the close associates who could not leave are never forgotten |
| 2021 |
We have been advancing through successive battles in the 【DSA2021 Reignition Reversal Offensive Version】 |
| 2021-10-01 |
Established: October 1, 2021 |
| 2023-03 |
Although we fell short of the mid- to long-term management goal of "sales of 100 billion yen for the fiscal year ending March 2023" based on the slogan "Connecting cars and homes through manufacturing" announced at 【DSA2021 Reignition Reversal Offensive Version】, we have clear visibility of the targets such as "No.1 global share of ignition coils in the automotive equipment business," "Maintaining the No.1 domestic share of residential energy storage systems," "No.1 market share for reactors for inverter air conditioners in Japan," and "Top 3 share within major customers," despite some gaps in achievement |
