|1936||Founded at Ohkurayama, Yokohama-Shi with the capital of 500 thousand Yen, in order to manufacture the bright steel bars.|
|1946||Hajime Yamaoka took office the President.|
|1952||Bright Steel Bar Drawing System was developed.(Patent No.20879)|
|1958||Designated as the model plant for the rationalization of the small size companies.(1958-1960)|
|1961||The parts production Dept. was closed in order to expand the ground bar products and the heat treatment as the leading bright steel manufacturer.|
|1964||Started the rationalization plan i.e., re-building of complete plant, installation of peeling machine and bar to bar drawing machine.(completed on 1971)|
|1978||Started the marketing of the wire rod for the cold forming process.|
|1985||Capital of the company was increased to 50 million Yen.|
Moved the head office and plant completely to Kurihama, Yokosuka-shi.
Executed the rationalization taking this moving, i.e., additional installation of combined drawing machine, newly installation of an automatic pickling line, newly installation of heat treatment furnace, additional installation of peeling machine.
|1993||Hiromichi Doi took office the President.|
Hisakazu Sekiya took office the President.
Logistic Dept. started their service as an independent company IKEUCHI KOSAN.
|2010||IKEUTI-SUMMIT(FOSHAN)PRECISION PROCESSING CO.,LTD in Foshan City(China).|
|2012||Keiichiro Yamaoka took office the President.|