Oita Tostem Co., Ltd.

Takejiro Ushioda sets up the Myokenya store, the predecessor of Tostem Corporation, to launch a wooden fittings retail business.

Nihon Tategu Kogyo Co., Ltd. (later Tostem Corporation; currently LIXIL Corporation) is founded by Kenjiro Ushioda.

Tostem and Shin Nikkei undertake Japan's first super high-rise curtain wall project for the Kasumigaseki Building.

Tostem launches a new aluminum window sash designed to prevent rainwater seepage and allow easier cleaning.

INAX Corporation and TOSTEM Corporation merged their operations and established Tostem Inax Holding Corporation (currently LIXIL Corporation) as a holding company.

Tostem Inax Holding Corporation is renamed JS Group Corporation.

INAX and Tostem develop a bathroom drainage system designed to significantly increase cleaning functionality.

TOSTEM launches a window featuring significantly increased heat insulation due to expansion of the double-glazed area.

LIXIL was born in 2011 through a merger of five of Japan's most successful building materials and housing companies, TOSTEM, INAX, Shin Nikkei, Sunwave, and TOEX.

Tostem, INAX, Shin Nikkei, SUNWAVE and Toyo Exterior are integrated to establish LIXIL Corporation.