Patents by Inventor Naokuni Inada

Naokuni Inada 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).

  • Patent number: 7683101
    Abstract: A pre-expanded beads of olefin-modified polystyrene-based resin comprising a pie-expanded beads of a polystyrene-based resin modified with a polyolefin-based resin, wherein a styrene-based monomer forming a polystyrene-based resin in the beads is used in the range of 100 to 1,000 parts by weight relative to 100 parts by weight of a polyolefin-based resin, a bulk density of each bead is 0.012 to 0.20 g/cm3, and an absorbance ratio at 698 cm?1 and 2850 cm?1 (D698/D2850) obtained from an infrared absorption spectrum of each bead surface measured by ATR method infrared spectroscopy is in the range of 0.1 to 2.5.
    Type: Grant
    Filed: July 23, 2004
    Date of Patent: March 23, 2010
    Assignee: Sekisui Plastics Co., Ltd.
    Inventors: Naokuni Inada, Hideyasu Matsumura, Yasutaka Tsutsui, Ikuo Morioka
  • Publication number: 20060217452
    Abstract: A pre-expanded beads of olefin-modified polystyrene-based resin comprising a pie-expanded beads of a polystyrene-based resin modified with a polyolefin-based resin, wherein a styrene-based monomer forming a polystyrene-based resin in the beads is used in the range of 100 to 1,000 parts by weight relative to 100 parts by weight of a polyolefin-based resin, a bulk density of each bead is 0.012 to 0.20 g/cm3, and an absorbance ratio at 698 cm?1 and 2850 cm?1 (D698/D2850) obtained from an infrared absorption spectrum of each bead surface measured by ATR method infrared spectroscopy is in the range of 0.1 to 2.5.
    Type: Application
    Filed: July 23, 2004
    Publication date: September 28, 2006
    Applicant: Sekisui Plastics Co., Ltd
    Inventors: Naokuni Inada, Hideyasu Matsumura, Yasutaka Tsutsui, Ikuo Morioka