|Nihon Musen Denshin KK (Japan Wireless Telegraph Company) founded as a national policy company
|Yosami Radio Transmitting Station begins operations
|DKK Co., Ltd. established as a second company of the former national policy company
Starts the design, manufacture, construction, and renovation of telecommunications facilities and equipment
|Beginning the manufacture of applied high-frequency devices and heat treating services using high frequencies
|Beginning of over-the-counter trading on the Tokyo Stock Exchange
|Construction of the Kawagoe Plant (present Kawagoe Office), beginning the manufacturing of radio towers and other steel structures
|Listing on the Second Section of the Tokyo Stock Exchange
|Construction of the Atsugi Plant. Expansion of applied high-frequency equipment manufacturing and heat treating contract work
|Construction of the Kanuma Plant. Beginning of antenna manufacturing operations
|Listing on the First Section of the Tokyo Stock Exchange
|Establishment of DKK Shino- Thai Engineering CO., Ltd., an affiliated company in Thailand specializing in design and construction of communications steel towers
|Opening of the Ebino Techno Center. Beginning of maintenance and operating services for Very Low Frequency/high output transmission facilities
|Closure of the Yosami Radio Transmitting Station, drawing the curtain on 70 years of history
|Ohtakadoya-yama Transmitter: Beginning of maintenance and operating services for Japan Standard Time transmitter
|50th anniversary of DKK’s founding
|Hagane-yama Transmitter: Beginning of maintenance and operating services for Japan Standard Time transmitter
|Installation of digital television broadcasting antenna on Tokyo Tower (broadcasting commencing in 2003)
|Establishment of DKK’s high-frequency device affiliate in North America, DKK of America, Inc.
|Establishment of DKK (THAILAND) Co., Ltd., an affiliated company in Thailand to serve both in the Telecommunication section and the High frequency application section.
Establishment of DKK’s high-frequency device affiliate in China, Denki Kogyo (Changzhou) Heat Treatment Equipment Co., Ltd.
|Establishment of DKK MANUFACTURING (THAILAND) CO., LTD., an affiliated company in Thailand as an overseas manufacturing plant both for the Telecommunication section and the Induction Heating section.
|Establishment of DTHM,S.A.DE C.V.an affiliated company for contract heat treating in the high-frequency division in Mexico
|Establishment of KOREA DENKIKOGYO.CO.,LTD. as overseas production and maintenance base in the high-frequency division in Korea
|Establishment of DKK North America, Inc. as a sales base of antenna in the U.S.A.
Establishment of Wireless R & D center (Yokohama) as a research and development base.
|Established Future Research Center in Yokohama, Kanagawa Prefecture to pursue research and development activities aimed at developing new business areas that will drive the Company’s future.
|Transition to the Prime Market of the Tokyo Stock Exchange.
|Carried out merger by DKK Co., Ltd. as the surviving company and DKC Co., Ltd., Koshuha Co., Ltd as a dissolved companies
|Acquired shares of Cybercore Co., Ltd.
Progress of DKK
The story of DKK’s progress goes back to Nihon Musen Denshin KK (The Japan Wireless Telegraph Company, subsequently the Kokusai...
History of the Yosami Radio Transmitting Station
Since the Meiji Revolution, Japan has depended on submarine cables owned by European and American telegraph companies for its communications...
At the Establishment of DKK
1950- 1950 Establishment of DKK Co., Ltd. : June 1 Established as a second company of national policy firm Kokusai...
The Era of High-Speed Growth
1955- 1955 Establishment of the Kyushu and Osaka sub-branch offices (currently the Seibu and Osaka branches, respectively) 1956 Receives order...
A Time of Rapid Transformation
1995- 1965 Building of the Hamamatsu Plant (currently on lease to the Denko Techno Heat Co., Ltd.) and expansion of...
The Era of Stable Long-Term Growth
1975- 1978 Start of automobile telephone base station antenna manufacturing 1981 Building of the Kawagoe Plant and expanded production of...
The Dawn of the Information Age
1989- 1991 Start of construction and maintenance and operation services of high power very low frequency (VLF) transmitting equipment Building...
Toward a New Era Led by the IT Revolution
2000- 2000 50th anniversary of DKK’s founding The Kanuma Plant obtains ISO14001 certification for its environmental management systems [ Cellular...