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1937 |
April |
Inosuke Tomita, founder of Diamond Electric, started manufacturing and marketing automotive ignition coils as a personal business. |
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1940 |
June |
Founded Tokushu Henatsuki K.K. in Nishi-Yodogawa ward (present Yodogawa ward), Osaka city. |
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1948 |
March |
All Diamond coil products were authorized as outstanding automotive parts by the Ministry of International Trade and Industry. |
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1960 |
July |
Started the production of ignition transformers for oil burners. |
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1962 |
May |
Changed the company name to Diamond Electric Mfg. Co., Ltd. |
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1967 |
May |
Founded Tottori Diamond Electric Mfg. Co., Ltd. in Tottori city (current Fuse Plant). |
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1971 |
November |
Developed and started manufacturing electronic ignition devices and combustion control devices for use in central heating systems. |
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1978 |
November |
Capital participation by Osaka Small and Medium Business Investment Consultation Company (SBIC WEST JAPAN). |
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1981 |
January |
Constructed the Tsunoi Plant of Tottori Diamond Electric (current Tottori Plant). |
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1984 |
September |
Founded Niigata Diamond Electric Co., Ltd. in Yoshida-machi, Nishikanbara-gun, Niigata Prefecture, as a joint venture with Uchida Mfg. Co., Ltd. (current Corona Corp.). |
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1985 |
December |
Completed the second expansion engineering work of Tottori Diamond Electric and established the Technical Center. |
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1987 |
December |
Founded Diamond Electric Mfg. Corporation (U.S.) in Michigan. |
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1989 |
September |
Established the Headquarters Technical Center. |
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|
November |
Merged Tottori Diamond Electric Mfg. Co., Ltd. in preparation for listing. |
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1994 |
November |
Awarded "Deming Prize for Medium and Small Companies" for our total quality control (TQC). |
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1996 |
July |
Listed in the Second Section of the Osaka Securities Exchange. |
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|
December |
Acquired ISO 9001 certification. |
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|
December |
Constructed the Second Plant of Diamond Electric Mfg. Corporation (U.S.) in West Virginia. |
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1997 |
July |
Acquired QS 9000 certification. |
| |
|
November |
Shigeji Ikenaga, the president and representative director (current CEO and representative director) awarded the Medal with Blue Ribbon. |
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2000 |
September |
Founded Diamond Electric Hungary Kft. in Esztergom, Hungary. |
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2001 |
January |
Acquired ISO 14001 certification. |
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2002 |
November |
Shigeji Ikenaga, the president and representative director (current CEO and representative director) was awarded the Order of the Sacred Treasure, Gold Rays with Neck Ribbon. |
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2003 |
December |
Awarded "Award for TPM Excellence First Category". |
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2004 |
May |
Founded Diamond Electric Mfg(Suzhou)Co.,Ltd.in Suzhou,China |
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2005 |
October |
Acquired ISO14001 / TS16949 certification. |
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2007 |
June |
Founded DE Diamond Electric India Private Limited in Bawal,Haryana,India |
