| Feb. 1939- |
Established Imasen Electric Industrial Co., Ltd. |
| Jun. 1954- |
Started the production of lamps. |
| Mar. 1955- |
Started the production of relays. |
| Jun. 1958- |
Started the production of window regulators. |
| Aug. 1958- |
Opened Tokyo Branch Office. |
| Feb. 1960- |
Opened Hiroshima Branch Office. |
| Sep. 1962- |
Established Knight Beam Co., Ltd. |
| Nov. 1962- |
Established Knight Denso Co., Ltd. |
| Sep. 1963- |
Started the production of aircraft wire harness. |
| Dec. 1963- |
Completed Nagoya Plant. |
| Oct. 1964- |
Opened Mizushima Liaison Office. |
| Nov. 1965- |
Started the production of seat reclining adjusters. |
| Nov. 1966- |
Started the production of seat slide adjusters. |
| Jun. 1967- |
Established Toyo Koku Denshi Co., Ltd. |
| Sep. 1968- |
Established Imasen Electric & Machinery Co., Ltd. in Taiwan. |
| Jun. 1970- |
Established Knight Seiki Co., Ltd. |
| Jan. 1971- |
Started the production of electromotive wheelchairs. |
| Aug. 1971- |
Completed Hiroshima Plant. |
| Apr. 1974- |
Established Knight Co., Ltd. |
| Nov. 1977- |
Established Meihoku Mitsubishi Motor Sales Co., Ltd. |
| Dec. 1979- |
Established Gifu Tokoden Co., Ltd. |
| Jan. 1982- |
Merged Knight Seiki Co., Ltd. into Kani Plant. |
| Apr. 1982- |
Established Imasen Engineering Corporation. |
| Aug. 1985- |
Opened Tochigi Branch Office. |
| Nov. 1985- |
Started the production of power seat adjusters. |
| Oct. 1993- |
Merged Knight Denso Co., Ltd. into Okayama Plant. |
| Apr. 1995- |
Completed Yaotsu Plant. |
| Jun. 1996- |
Established Imasen Philippine Manufacturing Corporation in Philippine. |
| Dec. 1996- |
Public offering of stock for over-the-counter dealings. |
| Apr. 1997- |
Established Imasen Bucyrus Technology Inc. in U.S.A. |
| Aug. 1997- |
Acquired the ISO 9001. |
| May. 1999- |
Opened new Okayama Plant at a new location. |
| Oct. 1999- |
Acquired the QS-9000. |
| Sep. 2001- |
Stocks listed on Nagoya Stock Exchange. |
| Dec. 2001- |
Established Guangzhou Imasen Electric Ind. Co., Ltd. in China. |
| Dec. 2002- |
Acquired the ISO 14001 at all domestic plants & head office. |
| Jan. 2003- |
Established Imasen Manufacturing (Thailand) Co., Ltd. in Thailand. |
| Feb. 2003- |
Stocks listed on Tokyo Stock Exchange. |
| Jan. 2004- |
Acquired the ISO/TS 16949. |
| Apr. 2004- |
Merged Knight Beam Co., Ltd. into Harusato Plant. |
| Apr. 2007- |
Established Kyusyu Imasen Co., Ltd. |
| Nov. 2007- |
Established Imasen Manufacturing India Private
Limited in India |
