Patents by Inventor Keishiro Hanaoka

Keishiro 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).

  • Porous iron ore pellets
    Patent number: 4350523
    Abstract: Porous iron ore pellets and a process for manufacturing same, the pellets having a pore size distribution consisting of more than 30% of pores having a diameter greater than 10 microns and a balance of pores having a diameter smaller than 10 microns, a total porosity greater than 30%, and an FeO content less than 1% by weight.
    Type: Grant
    Filed: April 8, 1980
    Date of Patent: September 21, 1982
    Assignee: Kabushiki Kaisha Kobe Seiko Sho
    Inventors: Kazumasa Taguchi, Hiroshi Isako, Koichi Ikeda, Keisuke Honda, Masaru Kanemoto, Keishiro Hanaoka