1904 Nippon Toki Partnership founded.
1912 Ceramics laboratory built at Nippon Toki; research begins on producing sanitary ceramics.
1917 Toyo Toki Co., Ltd. founded in the city of Kokura on Kyushu.
1918 Production being of sanitary ceramics.
1937 Chigasaki plant constructed.
1946 Manufacture begins on faucet hardware.
1968 Sale begins of vanity sinks.
1969 Trademark is change from Toyotoki to TOTO.
1970 Company name change from Toyo Toki to TOTO kiki.