Patents by Inventor Takumi Izumitani

Takumi Izumitani 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 decomposing thermoset resin and recovering decomposition product
    Patent number: 8653150
    Abstract: The present invention relates to a method for decomposing, in the presence of subcritical water, a thermosetting resin comprising a polyester moiety and a crosslinking moiety therewith to provide a compound comprising an acid residue derived from the polyester moiety and a residue derived from the crosslinking moiety, and collecting the compound in an efficient yield, specifically, which comprises steps of: (I) decomposing the thermosetting resin in the presence of subcritical water to provide a solid comprising a compound comprising an acid residue derived from the polyester moiety and a residue derived from the crosslinking moiety, (II) subjecting the solid to an organic solvent to dissolve the compound into the organic solvent, wherein the organic solvent has a higher solubility which can dissolve the compound than that of water, and (III) collecting, separating or isolating the compound from the organic solvent.
    Type: Grant
    Filed: March 26, 2009
    Date of Patent: February 18, 2014
    Assignees: Panasonic Corporation, International Center for Environmental Technology Transfer
    Inventors: Takumi Izumitani, Takaharu Nakagawa, Masaru Hidaka, Keishi Shibata, Junko Matsui
  • METHOD FOR DECOMPOSING THERMOSET RESIN AND RECOVERING DECOMPOSITION PRODUCT
    Publication number: 20110086930
    Abstract: The present invention relates to a method for decomposing, in the presence of subcritical water, a thermosetting resin comprising a polyester moiety and a crosslinking moiety therewith to provide a compound comprising an acid residue derived from the polyester moiety and a residue derived from the crosslinking moiety, and collecting the compound in an efficient yield, specifically, which comprises steps of: (I) decomposing the thermosetting resin in the presence of subcritical water to provide a solid comprising a compound comprising an acid residue derived from the polyester moiety and a residue derived from the crosslinking moiety, (II) subjecting the solid to an organic solvent to dissolve the compound into the organic solvent, wherein the organic solvent has a higher solubility which can dissolve the compound than that of water, and (III) collecting, separating or isolating the compound from the organic solvent.
    Type: Application
    Filed: March 26, 2009
    Publication date: April 14, 2011
    Applicants: PANASONIC ELECTRIC WORKS CO., LTD., INTERNATIONAL CENTER FOR ENVIRONMENTAL TECHNOLOGY TRANSFER
    Inventors: Takumi Izumitani, Takaharu Nakagawa, Masaru Hidaka, Keishi Shibata, Junko Matsui