YOTAI had established by investment of Osaka Cement Co.,Ltd.(at present Sumitomo Osaka Cement Co.,Ltd.) and others for the purpose of manufacturing high-glade refractories in 1936. We contribute to the enterprise of "heat and environment" as the top of general maker of refractories.
August 1936
"OSAKA YOGYO FIRE BRICK CO.,LTD." established.
September 1937
"Okayama Clay Plant"(at present, the second branch of Yoshinaga Plant) built.
January 1938
"Hinase Plant" built.
December 1947
"Tokyo Branch Office" established.
September 1949
Listed on the Osaka Stock Exchange.
June 1951
"Mitsuishi Plant"(at present, the third branch of Yoshinaga Plant) built.
April 1955
"Kyushu Branch Office" established.
April 1962
"Yoshinaga Plant" built.
April 1985
"Technical Research Laboratory" established.
June 1987
Changed the company name "YOTAI REFRACTORIES CO., LTD."
October 1993
Merged with "OSAKA YOGYO CO.,LTD."
KAIZUKA Plant
MIZUNAMI Plant
July 2004
Joint venture company "YINGKOU NEW YOTAI REFRACTORY CO., LTD." established in China.
May 2005
Acquired 100% ownership of a joint venture company in China.
July 2013
Listed on the Tokyo Stock Exchange along with the integration of spot markets.
August 2021
The 85th Anniversary.
April 2022
Shifted to the prime market due to the restructuring of the market classification of the Tokyo Stock Exchange.
October 2022
Acquisition the refractory raw material manufacturing business of Shibata Ceramic Raw Materials Co., Ltd. and begins operations as the Toki Factory of Mizunami Plant.
The acquisition ceremony
HISTORY of OSAKA YOGYO CO., LTD
January 1882
"ACID PHIAL MANUFACTURING COMPANY" established.
January 1888
Changed the company name "OSAKA YOGYO Limited."
January 1894
Changed the company name "OSAKA YOGYO CO., LTD."
January 1907
"Kaizuka Plant" built.
August 1961
"Mizunami Plant" built.
April 1992
"Advanced Materials Laboratory” and "Kaizuka Plant" relocated.
October 1993
Merged with "YOTAI REFRACTORIES CO., LTD."
