Patents by Inventor Toyoyuki Urabe

Toyoyuki Urabe 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).

  • Modified styrene-maleic acid copolymer and use thereof
    Patent number: 8044148
    Abstract: The present invention relates to a modified styrene-maleic acid copolymer obtained by reacting a carboxylic acid group in a styrene-maleic acid copolymer with a halogen and/or epoxy compound. The modified styrene-maleic acid copolymer is useful as a low profile additive for a thermosetting resin, a water-absorbing material, etc.
    Type: Grant
    Filed: November 22, 2005
    Date of Patent: October 25, 2011
    Assignees: Panasonic Electric Works Co., Ltd., International Center For Environmental Technology Transfer
    Inventors: Takeshi Yoshimura, Tetsuya Maekawa, Takaharu Nakagawa, Toyoyuki Urabe
  • MODIFIED STYRENE-MALEIC ACID COPOLYMER AND USE THEREOF
    Publication number: 20100130694
    Abstract: The present invention relates to a modified styrene-maleic acid copolymer obtained by reacting a carboxylic acid group in a styrene-maleic acid copolymer with a halogen and/or epoxy compound. The modified styrene-maleic acid copolymer is useful as a low profile additive for a thermosetting resin, a water-absorbing material, etc.
    Type: Application
    Filed: January 27, 2010
    Publication date: May 27, 2010
    Applicants: International Center for Environ. Tech. Transfer, PANASONIC ELECTRIC WORKS CO., LTD.
    Inventors: Takeshi Yoshimura, Tetsuya Maekawa, Takaharu Nakagawa, Toyoyuki Urabe
  • Depolymerization process
    Patent number: 7696378
    Abstract: The present invention relates to a process for decomposing a polymer into a monomer or oligomer by hydrolysis with sub- or supercritical water. The process of the present invention is characterized in that at least a part of the polymer is a polymer comprising a constitutional unit derived from an organic acid in the molecular structure, and the polymer being contacted with sub- or supercritical water in the presence of a water-insoluble base.
    Type: Grant
    Filed: November 6, 2003
    Date of Patent: April 13, 2010
    Assignee: Panasonic Electric Works Co., Ltd.
    Inventors: Masaru Hidaka, Takaharu Nakagawa, Toyoyuki Urabe, Tetsuya Maekawa, Hiroyuki Yoshida
  • Method of decomposing plastic
    Patent number: 7601760
    Abstract: The present invention provides a method for decomposing a plastic so as to recycle useful substances therefrom as raw materials for a similar plastic. In particular, the present invention provides a method for decomposing a plastic, comprising the step of treating a thermosetting resin comprising a polyester and its crosslinking moiety, with subcritical water of a temperature lower than the thermal decomposition temperature of the thermosetting resin. According to the present invention, the thermosetting resin can be decomposed into a polyhydric alcohol, a polybasic acid and a compound comprising an acid residue derived from the polyester and a residue derived from the crosslinking moiety, without causing a random decomposition of the thermosetting resin.
    Type: Grant
    Filed: March 24, 2005
    Date of Patent: October 13, 2009
    Assignees: Matsushita Electric Works, Ltd., International Center for Environmental Technology Transfer
    Inventors: Masaru Hidaka, Takaharu Nakagawa, Toyoyuki Urabe, Tetsuya Maekawa
  • Modified Styrene-Maleic Acid Copolymer and Use Thereof
    Publication number: 20080021162
    Abstract: The present invent-on relates to a modified styrene-maleic acid copolymer obtained by reacting a carboxylic acid group in a styrene-maleic acid copolymer with a halogen and/or epoxy compound. The modified styrene-maleic acid copolymer is useful as a low profile additive for a thermosetting resin, a water-absorbing material, etc.
    Type: Application
    Filed: November 22, 2005
    Publication date: January 24, 2008
    Applicants: Matsushita Electric Works, Ltd, International Center For Environ Tech
    Inventors: Takeshi Yoshimura, Tetsuya Maekawa, Takaharu Nakagawa, Toyoyuki Urabe
  • Method Of Decomposing Plastic
    Publication number: 20070197669
    Abstract: The present invention provides a method for decomposing a plastic so as to recycle useful substances therefrom as raw materials for a similar plastic. In particular, the present invention provides a method for decomposing a plastic, comprising the step of treating a thermosetting resin comprising a polyester and its crosslinking moiety, with subcritical water of a temperature lower than the thermal decomposition temperature of the thermosetting resin. According to the present invention, the thermosetting resin can be decomposed into a polyhydric alcohol, a polybasic acid and a compound comprising an acid residue derived from the polyester and a residue derived from the crosslinking moiety, without causing a random decomposition of the thermosetting resin.
    Type: Application
    Filed: March 24, 2005
    Publication date: August 23, 2007
    Applicants: Matsushita Electric works, Ltd., International Center for Eviron. Tech. Transfer
    Inventors: Masaru Hidaka, Takaharu Nakagawa, Toyoyuki Urabe, Tetsuya Maekawa
  • Depolymerization process
    Publication number: 20060247465
    Abstract: The present invention relates to a process for decomposing a polymer into a monomer or oligomer by hydrolysis with sub- or supercritical water. The process of the present invention is characterized in that at least a part of the polymer is a polymer comprising a constitutional unit derived from an organic acid in the molecular structure, and the polymer being contacted with sub- or supercritical water in the presence of a water-insoluble base.
    Type: Application
    Filed: November 6, 2003
    Publication date: November 2, 2006
    Inventors: Masaru Hidaka, Takaharu Nakagawa, Toyoyuki Urabe, Tetsuya Maekawa, Hiroyuki Yoshida