Establishment as the Special Electric Equipment Research Laboratory and development of Japan’s first circular laminated core
|1939||The Special Electrical Equipment Research Laboratory was established in Osaka.|
|1943||Development of Japan's first circular laminated core used in sliding voltage regulators.|
|1945||War damage forced a move to the current location (Yamashina-ku, Kyoto), where operations continued.|
|1948||Development of voltage regulators with coupled coils that used circular laminated cores; this laid the groundwork for becoming a manufacturer specializing in sliding voltage regulators.|
|1951||Corporate name was changed to Special Electrical Equipment Manufacturing Co., Ltd.|
|1952||Sliding voltage regulators were issued official authorization numbers.|
|1955||Development of cores with ductile coils as well as the No-Cut Winder. These developments helped revolutionize and expand the columnar transformer industry.|
Development and commercialization of Induction Heated Jacket Rolls
|1960||Development and commercialization of U-shaped core transformers and saturable reactors using split ductile wound cores.|
|1961||Corporate name changed to Special Electrical Equipment Co., Ltd.|
|1964||Development and commercialization of the world's first induction heated roll for synthetic fiber heat stretching machines. Development and commercialization of single- and three-phase butt reactors, transformers, saturable reactors and other induction heating devices.|
|1969||Development and commercialization of Induction Heated Jacket Rolls.|
|1970||Developed a triple-frequency power source for blast furnaces (1,500 kW Tripler) and licensed induction heating roll technology to Dienes Co., Ltd. in the former West Germany.|
From Special Electrical Equipment to TOKUDEN
|1980||Corporate name was changed to Tokuden Co., Ltd.
Development and commercialization of a Jacket Roll capable of using three-phase power sources.
|1984||Commmercialized four-meter wide rolls for nonwoven embossing calenders. This represented a serious push into the nonwoven fabrics market. Also developed and commercialized was the high-temperature (400℃) Jacket Rolls.|
|1985||Establishment of wholly-owned subsidiary Tokuden, Inc. in the United States.
Development and commercialization of heat-reaction pots and Univestors by combining induction heating and Jacket Chambers technologies.
|1988||Establishment of the Makino Plant.
Received order for 160 high-temperature rolls (400°C) for carbon fiber production from a company in the United States.
Development and commercialization of high-temperature (600℃) Induction Heated Rolls for steelmaking.
Expansion of Makino Plant and reinforcement of production capacity
|1993||Expanded the Makino Plant and developed an integrated production system for large rolls.
Delivered 3.5-meter high-speed, soft calender rolls to major paper manufacturers. Validated the effects of high-temperature calendering on paper.
|1994||Development and commercialization of involute cores.|
|1995||Completed a large induction heated spin beam.|
|1996||Expanded facilities and strengthened the production system at the Makino Plant.|
|1998||Makino Plant awarded ISO9001 certification.
Pilot Calender Machine completed.
|1999||Received the 1999 Science and Technology Director Award for the development and commercialization of involute cores.|
Further research and development of Jacket Rolls
|2000||Delivered 7.6-meter wide rolls for paper processing to a Swedish paper manufacturer.|
|2004||Development of the Fluid Circulation Jacket Rolls which was awarded the 2003 Energy Conservation Grand Prize.|
|2005||Expanded the Makino Plant to include a third building.
A state-of-the-art Technical Center was commissioned at the Makino Plant.
|2006||Development and commercialization of the High-Precision Induction Heated Jacket Roll.
Development of High-Temperature (700℃) Induction Heated Rolls.
|2007||The Kyoto Plant, Makino Plant and Tokyo Business Office were awarded ISO14001 certification.|
|2009||Completion of sample evaluation and commercialization of high-pressure multi-layer transformer incorporating a multi-layer involute core.
Development and commercialization of the Hybrid Rolls (Induction Heated Jacket Rolls with cooling function).
Start of commercialization of Induction Heated Apparatus
|2010||Start of commercialization of Midfrequency Induction Heated Apparatus.|
|2011||Development of UPSS Superheated Steam Generator.|
|2013||Received the 2013 Oscar Certificate from the Advanced Scientific Technology & Management Research Institute of Kyoto.|
|2014||Received the 2014 Certificate from the Kyoto Genki-jirushi Medium-small Business Certificate Program.|