Patents by Inventor Hisasuke Takeuchi

Hisasuke Takeuchi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Apparatus for production of metal powder according water atomizing method
    Patent number: 3951577
    Abstract: This invention relates to an apparatus for production of metal powders of a low oxygen content, which are preferred as raw material powders for sintered bodies of a high toughness, according to the water atomizing method. More specifically, when a molten metal is sprayed in a limited space with use of a liquid crystal medium and cooled promptly, a metal powder results of a good moldability which has an oxygen content corresponding to 1/2 or less of the oxygen contents of metal powders prepared by conventional apparatuses and which is excellent in the size uniformity.
    Type: Grant
    Filed: February 11, 1974
    Date of Patent: April 20, 1976
    Assignees: Hitachi, Ltd., Hitachi Metals, Ltd.
    Inventors: Akira Okayama, Hisashi Ando, Ko Soeno, Hisasuke Takeuchi, Atsuya Kamada