Patents by Inventor Eiiji Taketomo

Eiiji Taketomo 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 materials for concentration and separation of hydrogen or helium, and process therewith for the separation of the gas
    Patent number: 4482360
    Abstract: A porous material for use for separation of gases having a molecular weight not larger than 4, such as hydrogen or helium in a high concentration from a mixture gas containing such gases, comprising not less than 50% of pores having a diameter ranging from 110 to 160 .ANG. with respect to the total pore volume, said pore diameter being determined by nitrogen adsorption measurement.
    Type: Grant
    Filed: May 25, 1983
    Date of Patent: November 13, 1984
    Assignee: Nippon Steel Corporation
    Inventors: Eiiji Taketomo, Masami Fujiura