| 1946 |
- |
Established Toho Sanken Electric Co., Ltd. at Shiki-machi (present Shiki-shi),
Saitama-ken |
| 1952 |
- |
Transferred the Headquarters and plant to Owada-machi (present Niiza-shi),
Saitama-ken |
| 1954 |
- |
Opened Tokyo Office in Toshima-ku, Tokyo |
| 1961 |
- |
Listed in the Second Section of the Tokyo Stock Exchange |
| 1962 |
- |
Changed its company name to Sanken Electric Co., Ltd. |
| 1963 |
- |
Opened its Osaka Branch in Osaka-shi, Osaka |
| |
- |
Completed Kawagoe Plant in Kawagoe-shi, Saitama-ken |
| 1968 |
- |
Established Sanken-Airpax Co., Ltd., a joint venture company with Airpax Corporation
of the U.S.A. |
| 1969 |
- |
Listed in the Second Section of the Osaka Stock Exchange |
| 1970 |
- |
Established Kashima Sanken Co., Ltd. |
| |
- |
Completed Niiza Plant in Niiza-shi, Saitama-ken |
| |
- |
Listed in the First Sections of the Tokyo and Osaka Stock Exchanges |
| 1973 |
- |
Opened Kyusyu Sales Office in Fukuoka-shi, Fukuoka-ken |
| |
- |
Established Korea Sanken Co., Ltd. in Korea |
| 1974 |
- |
Established Sanken Densetsu Co., Ltd. |
| 1977 |
- |
Opened Hiroshima Sales Office in Hiroshima-shi, Hiroshima-ken |
| 1978 |
- |
Established Ishikawa Sanken Co., Ltd. by merging five affiliates in Ishikawa-ken |
| 1979 |
- |
Opened Sendai Sales Office in Sendai-shi, Miyagi-ken |
| 1981 |
- |
Established Yamagata Sanken Co., Ltd. |
| 1982 |
- |
Established Sanken Kosan Co., Ltd. |
| 1984 |
- |
Issued Swiss francs convertible bonds (50 million Swiss francs) |
| 1985 |
- |
Issued Swiss francs notes with warrants (50 million Swiss francs) |
| 1986 |
- |
Opened Nagoya Sales Office in Nagoya-shi, Aichi-ken |
| |
- |
Issued Swiss francs notes with warrants (80 million Swiss francs) |
1988 |
- |
Issued US dollars bonds with warrants (US$100 million) |
| |
- |
Established Fukushima Sanken Co., Ltd. |
| |
- |
Opend Kanazawa Sales Office in Kanagawa-shi, Ishikawa-ken |
| |
- |
Established Sanken Electric Hong Kong Co., Ltd. in Hong Kong |
| 1989 |
- |
Issued US dollars bonds with warrants (US$150 million) |
| |
- |
Opened Sapporo Sales Office in Sapporo-shi, Hokkaido |
| |
- |
Established Gooding Sanken Limited in the UK (present Sanken Power Systems
(UK) Limited) |
| 1990 |
- |
Established Sanken Electric Singapore Pte. Ltd. in Singapore |
| |
- |
Established Allegro MicroSystems, Inc. in the U.S.A. |
| 1991 |
- |
Issued Swiss francs notes with warrants (100 million Swiss francs) |
| 1992 |
- |
Invested in Shimoda Electric Co., Ltd. (present Sanken Transformer Co., Ltd.),
and made it an affiliate company |
| 1994 |
- |
Opened Seoul Engineering Center in the Seoul Sales Office (present) |
| 1995 |
- |
Issued Swiss franc notes with warrants (130 million Swiss francs) |
| |
- |
Issued the first unsecured convertible bonds (10 billion yen) |
| 1997 |
- |
Established Sanken Techno-Research Co., Ltd. |
| |
- |
Invested in Sanken L.D. Co., Ltd. and made it an affiliate company |
| |
- |
Established P.T. Sanken Indonesia in Indonesia |
| 1998 |
- |
Opened Takamatsu Sales Office in Takamatsu-shi, Kagawa-ken |
| |
- |
Issued the first unsecured bonds (10 billion yen) |
| 1999 |
- |
Established Sanken Logistics Co., Ltd. |
| |
- |
Issued the second unsecured bonds (10 billion yen) |
| 2000 |
- |
Established Sanken Electric Korea Co., Ltd.in Korea |
| 2001 |
- |
Established Taiwan Sanken Electric Co., Ltd.in Taiwan |
| 2003 |
- |
Corporate Officer system introduced |
| |
- |
Sanken Electric (Shanghai) Co., Ltd. Established in Shanghais |
| |
- |
Investment in Sanken L.D. Electric (Jiangyin) Co., Ltd. To make it an affiliate company |
| 2004 |
- |
Taiwan Technology Center opened in Taiwan Sanken Electric Co., Ltd. |
| 2005 |
- |
Sanken Business Service Co., Ltd. (formerly Sanken Kosan, Co., Ltd.) and two other affiliates merged into a single entity |
| |
- |
Polar Semiconductor, Inc. established in U.S.A. |
| |
- |
Sanken Optoproducts Co., Ltd. Established |
| 2007 |
- |
Sanken Logistics Co., Ltd. established after Sanken Business Service Co., Ltd. separated its logistics business. |
