Patents by Inventor Ikuo Kiatamura

Ikuo Kiatamura 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).

  • Acicular fine particles containing metallic iron, iron carbide and carbon, process thereof, and magnetic coating composition and magnetic recording medium containing the same
    Patent number: 5443666
    Abstract: The present invention provides an acicular fine particles obtained by reducing an iron carbide starting material and containing metal iron, iron carbide and free carbon, the acicular fine particles having a mean particle size (long axis) of 0.1 to 0.5 .mu.m and an average axial ratio of 3 to 15 and containing 15 to 80 wt. % of metal iron, 10 to 75 wt. % of iron carbide and 5 to 13 wt. % of free carbon, process thereof, magnetic coating composition and magnetic recording medium containing the same.
    Type: Grant
    Filed: September 17, 1993
    Date of Patent: August 22, 1995
    Assignee: Daikin Industries, Ltd.
    Inventors: Ikuo Kiatamura, Takuya Arase, Fumihiro Kamiya, Shigeo Daimon