The Invention of Ferrites and Their Contribution to the Miniaturization of Radios

  title={The Invention of Ferrites and Their Contribution to the Miniaturization of Radios},
  author={Akira Okamoto},
  journal={2009 IEEE Globecom Workshops},
  • A. Okamoto
  • Published 28 December 2009
  • Materials Science
  • 2009 IEEE Globecom Workshops
Dr. Takeshi Takei, the professor at Tokyo Institute of Technology, discovered that oxides containing zinc and iron have distinguished magnetic properties. In 1930, Prof. Kato and Prof. Takei applied a patent for their discovery of oxide magnetic core materials, which was granted in 1932 in Japan. Tokyo Denki Kagaku Kogyo (now TDK Corporation) was founded in 1935 to commercialize this newly invented ferrite cores as a venture company originated from the university patent of ferrite TDK started… 

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