||Tokyo Denki Kagaku Kogyo K.K. established in Tamura-cho, Shiba-ku, Tokyo City for commercial production of ferrite cores.
||Kamata Plant constructed, mass production of ferrite cores begins.
||Hirasawa Plant constructed in Hirasawa-cho, Akita prefecture.
||Production of ceramic capacitors begins at the Hirasawa Plant.
||"Synchro Tape" - magnetic recording tape introduced.
||Ulcon Disc capacitor introduced.
||TDK's Paramister(parametron arithmetic circuit) wins the Grand Prix at the Brussels World Exposition.
||TDK opens its first overseas office in Los Angeles.
TDK shares listed on the Tokyo over-the-counter market.
||Yawata Plant constructed in Ichikawa City, Chiba Prefecture.
||TDK shares listed on the First Section of the Tokyo Stock Exchange.
||TDK establishes a local subsidiary in New York.
||"Synchro Cassette Tapes" introduced.
||Joint venture company established in Taiwan.
||Chikumagawa Plant constructed in Saku City, Nagano Prefecture.
||Chokai Plant constructed in Nikaho-machi, Akita Prefecture.
Shizuoka Plant constructed in Sagara-cho, Shizuoka Prefecture.
||Winchester Heads developed.
Local subsidiary established in Dusseldorf, Germany.
||Headquarters moved to 1-13-1 Nihonbashi, Chuo-ku, Tokyo.
VHS format "Super Avilyn Video Cassettes" introduced.
Narita Plant constructed in Narita City, Chiba Prefecture.
||Magnetic heads using amorphous materials introduced.
||Mikumagawa Plant constructed in Hita City, Oita Prefecture
TDK shares listed on the New York Stock Exchange.
||Company name changed to TDK Corporation.
TDK serves as an official sponsor of the First IAAF World Championships in Athletics (Helsinki).
||TDK has a pavilion at the International Exposition, Tsukuba, Japan.
||Local subsidiaries established in Malaysia and Luxembourg.