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