Patents by Inventor Michihiro Nakayama

Michihiro Nakayama 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).

  • Screw-type extrusion granulating apparatus, especially for producing very fine granules
    Patent number: 5240400
    Abstract: A screw-type front extrusion granulating apparatus for forming moistened powdered raw material such as chemicals for use in the agriculture, pharmaceutical, or food industries into granules, has a conveying screw in axial alignment with a semi-spherical die, the die having a plurality of die openings formed therein. The conveying screw has an extrusion blade mounted to its forward end to project into the confines of the semi-spherical die, the contour of the extrusion blade generally conforming to the inner surface of the die. In operation, the moistened powdered material is transported forwardly under pressure by the screw and extruded through the die utilizing the pressure of the screw and the scraping action of the extrusion blade.
    Type: Grant
    Filed: July 27, 1992
    Date of Patent: August 31, 1993
    Assignee: Fuji Paudal Kabushiki Kaisha
    Inventors: Tetsuma Fujimoto, Yuh Ohta, Michihiro Nakayama, Haruo Uesugi
  • Process for producing coated seed
    Patent number: 4250660
    Abstract: Coated seeds, the coating of which has sufficient hardness for machine-seeding and adequate disintegration characteristics in soil, are obtained by surface treating a coating powder and then coating seeds with the surface-treated coating powder.
    Type: Grant
    Filed: June 20, 1979
    Date of Patent: February 17, 1981
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Shuji Kitamura, Masashi Watanabe, Michihiro Nakayama