|1865||The first president Kosuke Tokunaga builds step kiln at Arita
|1915||Established Tokko Ceramics Factory
Koichi Tokunaga, the second president, started production of braziers
|1930||Kiln changes from step kiln tosingle-room kiln|
|1941||The third president,Tetsuo Tokunaga begins production of household tableware|
|1944||Product tableware for Japanese armed forces as an Army designated factory (No. 80)
|1954||Started restaurant tableware (Hakukourai)|
|1961||Kiln changes from coal-fired to oil-fired|
|1962||Completed a new factory in Maruo, Arita Town.
Relocate head office function.
Build a heavy oil type tunnel kiln (main kiln 50m, unglazed kiln 25m)
|1963||The company name changed of Tokko Ceramics Factory to Tokunaga Porcelain Co., Ltd.
Inaugurated as President Tetsuo Tokunaga / Appointed Managing Director Ryuichi Tokunaga
|1967||Hiroshi Tokunaga became managing director|
|1970||Built a gas-type kiln (main kiln 45m, unglazed kiln 25m)|
|1984||Tetsuo Tokunaga became chairman
Ryuichi Tokunaga became the 4th president
Hiroshi Tokunaga left the company in 1987 and established a new Tokkou kiln.
|1991||Ryuichi Tokunaga introduces Japan’s first lineless glaze|
|1993||Changed the main kiln to a gas-type single kiln (3.5 cubic meters)
|1995||Joined Takanobu Tokunaga|
|1997||Takanobu Tokunaga became managing director
First computer-controlled production system in Arita
Supervised by Takanobu Tokunaga
|2010||Feb Ryuichi Tokunaga became chairman / Takanobu Tokunaga
becames the 5th president
|2012||NHK Saga Broadcasting Station 70th Anniversary Drama “That Person That Day” Main Shooting Cooperation
|2013||Great East Japan Earthquake support activities started|
|2014||Artist in Residence started|
|2015||Foreign Residence Coordinator hired|