History 1940 - 1959

1940

• Establishes Oki Communications Equipment Co., Ltd.

1941

• Completes construction of Takahama Plant
• Pacific War begins

1942

• Constructs Dalian Works

1944

• Senkichi Ozawa appointed president
• Shibaura and Takahama plants designated "munitions" plants

1945

• Buildings in Shibaura Plant destroyed in air raids
• Second World War ends
• Concentrates production in five plants — Fukushima, Shibaura, Shinagawa, Tomioka, and Warabi
• Yuzo Yanai appointed president

1946

• Oki Electric Workers' Union established
• GHQ designates Oki Electric "restricted concern"
• GHQ designates Oki Electric and Oki Electric Securities "olding companies"

1947

• Ryoji Inoue appointed president

1948

• Ryoji Inoue passes away while still president

1949

• Yuzo Yanai reappointed president
• Oki Electric Co., Ltd., dissolved, and Oki Electric Industry Co., Ltd., established; Suteji Kanbe appointed president

1950

• Korean War begins
• Begins mass production of Type-4 telephone

1951

• Lists shares on Tokyo Stock Exchange

1953

• Mito Telegraph Office uses Oki Electric product to complete first automated telegraph repeating
• Markets page teletypewriter
• Resumes production at Shibaura Plant

1954

• Signs technical assistance agreement related to carrier telephones and telegraph equipment with Compagnie Industrielle des Telephones
• Signs technical assistance agreement related to radar technology, especially shipborne radio equipment, with Raytheon

1955

• Develops millimeter wave magnetron

1956

• Produces 100-line Ericsson-type crossbar-switching system for in-house use
• Delivers Ericsson-type crossbar-switching system for use at Ryuo Station in Yamanashi Prefecture
• Begins research into transistors and electronic exchanges

1957

• Establishes Oki Business Machines Sales Co., Ltd.
• Begins research into electronic computers

1958

• Develops millimeter wave klystron
• Adopts new plant system
• Completes construction of Takasaki Plant
• Develops belt line printer, photoelectric tape reader, and general-use I/O device

1959

• Signs patent licensing contract with WE for production of crossbar exchanges
• Completes development of OPC1 computer using parametrons

• 1874 - 1939
• 1960 - 1969

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  • The 120-Year History of Oki Electric
  • 130th Anniversary Column: OKI and the Changing Times
    -130 Years Seen through 20 Episodes-

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