Patents by Inventor Hirotaka Hanaoka

Hirotaka Hanaoka 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).

  • Powder metallurgical binder and powder metallurgical mixed powder
    Patent number: 5525293
    Abstract: Disclosed is a powder metallurgical mixed powder capable of preventing the defective dispersion, that is, the segregation of physical property improving powders and a lubricant powder without reduction in lubricity, and of suppressing the generation of dust upon handling of powders; and a powder metallurgical binder capable of realizing such a mixed powder. The binder including a copolymer containing monomer components of ethylene and propylene, which may be combined with a liquid binder having a specified composition as needed, is added to a powder metallurgical raw powder.
    Type: Grant
    Filed: November 4, 1994
    Date of Patent: June 11, 1996
    Assignee: Kabushiki Kaisha Kobe Seiko Sho
    Inventors: Akihiko Kagawa, Kazuhisa Fujisawa, Hironori Suzuki, Masahiro Murakami, Kunihiro Yoshioka, Hirotaka Hanaoka