Patents by Inventor Takema Yamaguchi

Takema Yamaguchi 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: 10087299
    Abstract: An expanded polyolefin resin particle is obtained by expanding a polyolefin resin particle using water and/or an inorganic gas as a foaming agent. The polyolefin resin particle includes a polyolefin resin, a product obtained by heating and kneading a mixture, and a water absorbing substance, wherein the mixture includes a first polypropylene resin, a polypropylene wax, a polyorganosiloxane including at least one silicon-atom-bound radical polymerizable functional group per molecule, and an organic peroxide.
    Type: Grant
    Filed: August 25, 2017
    Date of Patent: October 2, 2018
    Assignee: Kaneka Corporation
    Inventors: Takema Yamaguchi, Shintaro Miura
  • Publication number: 20170349721
    Abstract: An expanded polyolefin resin particle is obtained by expanding a polyolefin resin particle using water and/or an inorganic gas as a foaming agent. The polyolefin resin particle includes a polyolefin resin, a product obtained by heating and kneading a mixture, and a water absorbing substance, wherein the mixture includes a first polypropylene resin, a polypropylene wax, a polyorganosiloxane including at least one silicon-atom-bound radical polymerizable functional group per molecule, and an organic peroxide.
    Type: Application
    Filed: August 25, 2017
    Publication date: December 7, 2017
    Applicant: Kaneka Corporation
    Inventors: Takema Yamaguchi, Shintaro Miura
  • Patent number: 6822023
    Abstract: Flame retardant polyolefin pre-expanded particles made of a resin composition comprising a polyolefin resin and a sterically hindered amine ether flame retardant, which can be molded with good moldability to give in-mold foamed articles which have an excellent flame resistance and do not generate harmful gas at the time of burning.
    Type: Grant
    Filed: December 3, 2001
    Date of Patent: November 23, 2004
    Assignees: Kaneka Corporation, Kaneka Texas Corporation
    Inventors: John Bready Stuart, Steven Charles Skarke, Tetsuya Ogita, Takema Yamaguchi, Tomonori Iwamoto
  • Patent number: 6607682
    Abstract: Polypropylene resin pre-expanded particles having an expandability of 1.0 to 1.
    Type: Grant
    Filed: March 29, 2000
    Date of Patent: August 19, 2003
    Assignee: Kaneka Corporation
    Inventors: Takema Yamaguchi, Tomonori Iwamoto, Minori Yamaguchi, Kenichi Senda
  • Patent number: 6576693
    Abstract: The present invention aims at preparing polypropylene resin pre-expanded particles capable of providing an inmolded expanded article which prevents pollution of a mold by polypropylene powder at molding, packed products from being damaged by friction due to vibration at transport, and powder generation at the same time. Polypropylene resin pre-expanded particles comprising a resin composition containing a fatty acid amide compound is used.
    Type: Grant
    Filed: August 2, 2001
    Date of Patent: June 10, 2003
    Assignees: Kaneka Corporation, Kaneka Texas Corporation
    Inventors: Tetsuya Ogita, Takema Yamaguchi
  • Publication number: 20030105194
    Abstract: Flame retardant polyolefin pre-expanded particles made of a resin composition comprising a polyolefin resin and a sterically hindered amine ether flame retardant, which can be molded with good moldability to give in-mold foamed articles which have an excellent flame resistance and do not generate harmful gas at the time of burning.
    Type: Application
    Filed: December 3, 2001
    Publication date: June 5, 2003
    Applicant: KANEKA CORPORATION
    Inventors: John Bready Stuart, Steven Charles Skarke, Tetsuya Ogita, Takema Yamaguchi, Tomonori Iwamoto
  • Publication number: 20030060545
    Abstract: The present invention aims at preparing polypropylene resin pre-expanded particles capable of providing an inmolded expanded article which prevents pollution of a mold by polypropylene powder at molding, packed products from being damaged by friction due to vibration at transport, and powder generation at the same time. Polypropylene resin pre-expanded particles comprising a resin composition containing a fatty acid amide compound is used.
    Type: Application
    Filed: August 2, 2001
    Publication date: March 27, 2003
    Inventors: Tetsuya Ogita, Takema Yamaguchi
  • Patent number: 6355696
    Abstract: Polypropylene resin pre-expanded particles having a weight of 0.3 to 1.8 mg per particle and a mean cell diameter of at most 250 &mgr;m and exhibiting two fusion peaks on a DSC curve thereof one of which appearing on a higher temperature side has a specific heat of fusion QH, which can be molded in a mold in a shortened molding time to give cellular molded articles having a low density of 25 g/liter or less after being provided with an inorganic gas pressure of at least 1.5 atms when the heat of fusion QH is 2.8 to 6.0 cal/g, or after being provided with an inorganic gas pressure of 1.18 to 1.5 atms when the heat of fusion QH is from 0.3 to less than 2.8 cal/g.
    Type: Grant
    Filed: January 28, 1999
    Date of Patent: March 12, 2002
    Assignee: Kaneka Corporation
    Inventors: Takema Yamaguchi, Minori Yamaguchi, Kenichi Senda
  • Patent number: 6167892
    Abstract: A method of washing pre-expanded particles having a substantially water insoluble inorganic compound attached thereto by contacting the pre-expanded particles with an aqueous washing solution of a water soluble compound. The water soluble compound has a solubility with water of at least 1 g/100 g of water and has 1-500 surface bonding functional groups and 1-500 hydrophilic functional groups. At least one of the surface bonding functional groups of the water soluble compound attaches to the water insoluble inorganic compound.
    Type: Grant
    Filed: April 16, 1999
    Date of Patent: January 2, 2001
    Assignee: Kaneka Corporation
    Inventors: Tomonori Iwamoto, Takema Yamaguchi, Minori Yamaguchi