Patents by Inventor Minoru Otaguchi

Minoru Otaguchi 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).

  • Method for extruding brittle materials
    Patent number: 3967485
    Abstract: A method for extruding a billet made of brittle metals, alloys, intermetallic compounds, ferrites or ceramics, which comprises embedding the billet in a solid pressure transmitting medium having a configuration and a dimension fitting to those of the inner space of a container of an extruder and being capable of plastic deformation by the actuating pressure of a compressing plunger of the extruder, loading the billet in the container of the extruder, pressurizing the pressure transmitting medium by the compressing plunger, and extruding the billet by actuating the extrusion plunger while the pressure is being maintained.
    Type: Grant
    Filed: January 31, 1975
    Date of Patent: July 6, 1976
    Assignee: National Research Institute for Metals
    Inventors: Atsushi Oguchi, Minoru Otaguchi, Minoru Nobuki, Yoshinari Kaieda