Patents by Inventor Katsunori Nishijima

Katsunori Nishijima 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).

  • Polylactic acid-based resin foamed particles for in-mold foam-molding and method for producing the same, as well as method for producing polylactic acid-based resin foam-molded article
    Patent number: 8372512
    Abstract: The present invention provides a method for producing polylactic acid-based resin foamed particles for in-mold foam-molding from which a polylactic acid-based resin foam-molded article excellent in heat resistance and mechanical strength can be obtained by in-mold foam-molding. In the method of the present invention for producing polylactic acid-based resin foamed particles for in-mold foam-molding, a rotary blade is rotated at a given rotation speed while being always in contact with the front end surface of a nozzle and a polylactic acid-based resin extrudate extrusion-foamed through a nozzle is cut with the rotary blade, so that it is possible to cut the polylactic acid-based resin extrudate surely to obtain substantially spherical polylactic acid-based resin foamed particles.
    Type: Grant
    Filed: March 27, 2008
    Date of Patent: February 12, 2013
    Assignee: Sekisui Plastics Co., Ltd.
    Inventors: Takaaki Hirai, Katsunori Nishijima, Tetsuya Ochiai
  • POLYLACTIC ACID-BASED RESIN FOAMED PARTICLES FOR IN-MOLD FOAM-MOLDING AND METHOD FOR PRODUCING THE SAME, AS WELL AS METHOD FOR PRODUCING POLYLACTIC ACID-BASED RESIN FOAM-MOLDED ARTICLE
    Publication number: 20100136338
    Abstract: The present invention provides a method for producing polylactic acid-based resin foamed particles for in-mold foam-molding from which a polylactic acid-based resin foam-molded article excellent in heat resistance and mechanical strength can be obtained by in-mold foam-molding. In the method of the present invention for producing polylactic acid-based resin foamed particles for in-mold foam-molding, a rotary blade is rotated at a given rotation speed while being always in contact with the front end surface of a nozzle and a polylactic acid-based resin extrudate extrusion-foamed through a nozzle is cut with the rotary blade, so that it is possible to cut the polylactic acid-based resin extrudate surely to obtain substantially spherical polylactic acid-based resin foamed particles.
    Type: Application
    Filed: March 27, 2008
    Publication date: June 3, 2010
    Inventors: Takaaki Hirai, Katsunori Nishijima, Tetsuya Ochiai