Patents by Inventor Rikio Yokota

Rikio Yokota 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).

  • Liquid oxidizer immersion type hybrid rocket
    Patent number: 5694769
    Abstract: A liquid oxidizer immersion hybrid rocket having a combustion chamber, a porous fuel material placed in the combustion chamber, a liquid oxidizer filled into pores of the porous fuel material, and two holding plates provided in the combustion chamber so as to hold opposite ends of the porous fuel material respectively. The porous fuel material comprises a large number of layers stacked one another in an axial direction of the combustion chamber.
    Type: Grant
    Filed: May 11, 1995
    Date of Patent: December 9, 1997
    Assignee: The Director-General of The Institute of Space and Astronautical Science
    Inventors: Ryojiro Akiba, Nobuhiro Tanatsugu, Masahiro Kohno, Rikio Yokota