| October 1941 |
Established as a metal heat treating company. |
| March 1942 |
Company incorporated; heat treatment of military items begins
under supervision of, and in cooperation with, Kure Naval
Arsenal and Kawasaki Aircraft. |
| August 1945 |
With end of war, operation turns to heat treatment of civilian
items, including heat treatment of iron, steel, and various
types of machinery parts. |
| March 1948 |
Industrial electrical furnaces installed and capitalization
increased to 500,000 yen. |
| March 1955 |
Sales of first domestic industrial-scale gas nitriding processing
begin. |
| March 1961 |
As demand for iron and steel materials increases, plans
are formulated to install large-scale heat treatment furnaces.
Capitalization increased to 3.5 million yen. |
| October 1963 |
Headquarters plant is expanded. |
| April 1964 |
Capitalization increased to 5.5 million yen. |
| March 1967 |
Capitalization increased to 20 million yen. |
| Sept. 1969 |
Observation tour conducted to study metal heat treatment
in Europe and U.S. |
| Oct. 1970 |
Six vacuum heat treatment furnaces of various types purchased
from C. I. Hayes of the U.S. and installed.
Capitalization increased to 45 million yen. |
| May 1974 |
First domestic vacuum cementation furnace and patent acquired.
|
| April 1976 |
Site purchased for plant in Miki City, Hyogo Prefecture.
|
| May 1979 |
Capitalization increased to 70 million yen. |
| May 1980 |
Construction begins on Miki Plant in Miki City, Hyogo Prefecture.
Largest gas-cooled vacuum heat treatment furnace in Japan
purchased from ABAR Co. of the U.S. and installed. |
| April 1982 |
Capitalization increased to 98 million yen. |
| Oct. 1988 |
Manufacturing Division centralized at Miki Plant. |
| August 1989 |
Engineering Development Division created at headquarters
plant. |
| Dec. 1989 |
MIM-related patent acquired from Witec Japan Co. Ltd. |
| Oct. 1990 |
Installation of MIM-related equipment completed at headquarters
plant. |
| April 1991 |
Sales of MIM operations begin. |
| March 1992 |
Company celebrates 50th anniversary. |
| August 1996 |
New MIM building added at Miki Plant. |
| June 1999 |
The vacuum sintering furnace is increased. |
| Sept. 1999 |
Capitalization increased to 163 million yen. |
| May. 2000 |
The homepage is established. |
| Feb. 2001 |
High-speed(pressurize) cooling type vacuum furnace is increased. |
| March 2001 |
The heat-treating building is extended. |
| August 2001 |
A single dormitory is extended. |
| Sept. 2001 |
Company celebrates 60th anniversary. |
| June 2002 |
The MIM building is extended. |
| June 2002 |
The vacuum sintering hip furnace is increased. |
| Nov. 2002 |
The large-scale vacuum furnace is increased. |
