Patents by Inventor Houko Kanazawa

Houko Kanazawa 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: 8142605
    Abstract: A circuit-connecting material which is interposed between circuit electrodes facing each other and electrically connects the electrodes in the pressing direction by pressing the facing electrodes against each other; the circuit-connecting material comprising as essential components (1) a curing agent capable of generating free radicals upon heating, (2) a hydroxyl-group-containing resin having a molecular weight of 10,000 or more and (3) a radical-polymerizable substance. Also provided are a circuit terminal connected structure and a circuit terminal connecting method which make use of such a material.
    Type: Grant
    Filed: January 25, 2011
    Date of Patent: March 27, 2012
    Assignee: Hitachi Chemical Company, Ltd.
    Inventors: Itsuo Watanabe, Tohru Fujinawa, Motohiro Arifuku, Houko Kanazawa, Atsushi Kuwano
  • Patent number: 7967943
    Abstract: A circuit-connecting material which is interposed between circuit electrodes facing each other and electrically connects the electrodes in the pressing direction by pressing the facing electrodes against each other; the circuit-connecting material comprising as essential components (1) a curing agent capable of generating free radicals upon heating, (2) a hydroxyl-group-containing resin having a molecular weight of 10,000 or more and (3) a radical-polymerizable substance. Also provided are a circuit terminal connected structure and a circuit terminal connecting method which make use of such a material.
    Type: Grant
    Filed: September 16, 2005
    Date of Patent: June 28, 2011
    Assignee: Hitachi Chemical Company, Ltd.
    Inventors: Itsuo Watanabe, Tohru Fujinawa, Motohiro Arifuku, Houko Kanazawa, Atushi Kuwano
  • Patent number: 7968196
    Abstract: A circuit-connecting material interposed between mutually-facing circuit electrodes, and electrically connecting the electrodes, either by direct contact, or via conductive particles present in the material. The circuit-connecting material features: (1) a curing agent capable of generating free radicals upon heating; (2) a radical-polymerizable substance, and two or more microscopically separated phases. The two or more microscopically separated phases include an elastomer phase of carboxyl-group-containing elastomer and a phenoxy resin phase of a phenoxy resin having a weight average molecular weight of 10,000 or more.
    Type: Grant
    Filed: August 20, 2007
    Date of Patent: June 28, 2011
    Assignee: Hitachi Chemical Company, Ltd.
    Inventors: Itsuo Watanabe, Tohru Fujinawa, Motohiro Arifuku, Houko Kanazawa, Atsushi Kuwano
  • Publication number: 20110114893
    Abstract: A circuit-connecting material which is interposed between circuit electrodes facing each other and electrically connects the electrodes in the pressing direction by pressing the facing electrodes against each other; the circuit-connecting material comprising as essential components (1) a curing agent capable of generating free radicals upon heating, (2) a hydroxyl-group-containing resin having a molecular weight of 10,000 or more and (3) radical-polymerizable substance. Also provided are a circuit terminal connected structure and a circuit terminal connecting method which make use of such a material.
    Type: Application
    Filed: January 25, 2011
    Publication date: May 19, 2011
    Applicant: HITACHI CHEMICAL CO., LTD.
    Inventors: Itsuo Watanabe, Tohru Fujinawa, Motohiro Arifuku, Houko Kanazawa, Atsushi Kuwano
  • Patent number: 7879956
    Abstract: A circuit-connecting material for interposing between circuit electrodes facing each other and electrically connecting the electrodes, after curing by heat and pressure, either by direct contact or via conductive particles present in the material. The circuit-connecting material features the following essential components: (1) a curing agent capable of generating free radicals upon heating, (2) a phenoxy resin having a weight average molecular weight of 10,000 or more, and that is chemically modified by a carboxyl-group-containing elastomer, and (3) a radical-polymerizable substance.
    Type: Grant
    Filed: August 20, 2007
    Date of Patent: February 1, 2011
    Assignee: Hitachi Chemical Company, Ltd.
    Inventors: Itsuo Watanabe, Tohru Fujinawa, Motohiro Arifuku, Houko Kanazawa, Atsushi Kuwano
  • Patent number: 7629050
    Abstract: A circuit-connecting material which is interposed between circuit electrodes facing each other and electrically connects the electrodes in the pressing direction by pressing the facing electrodes against each other; the circuit-connecting material comprising as essential components (1) a curing agent capable of generating free radicals upon heating, (2) a hydroxyl-group-containing resin having a molecular weight of 10,000 or more and (3) a radical-polymerizable substance. Also provided are a circuit terminal connected structure and a circuit terminal connecting method which make use of such a material.
    Type: Grant
    Filed: August 20, 2007
    Date of Patent: December 8, 2009
    Assignee: Hitachi Chemical Company, Ltd.
    Inventors: Itsuo Watanabe, Tohru Fujinawa, Motohiro Arifuku, Houko Kanazawa, Atsushi Kuwano
  • Patent number: 7629056
    Abstract: A circuit terminal connected structure and a circuit terminal connecting method are provided. Both the structure and the method feature a circuit connecting material formulated with the following components: a curing agent capable of generating free radicals upon heating; an acrylate or methacrylate radical polymerizable substance; and either an acrylic rubber or a maleimide radical polymerizable substance having at least two maleimide groups per molecule. In some embodiments, the curing agent features a 10-hour half life temperature of 40° C. or above and a 1-minute half-life temperature of 180° C. or below. In other embodiments, the circuit connecting material includes conductive particles. In additional embodiments, the circuit connecting material includes a hydroxyl-group-containing resin having a weight average molecular weight of 10,000 or more.
    Type: Grant
    Filed: June 4, 2004
    Date of Patent: December 8, 2009
    Assignee: Hitachi Chemical Company, Ltd.
    Inventors: Itsuo Watanabe, Tohru Fujinawa, Motohiro Arifuku, Houko Kanazawa, Atsushi Kuwano
  • Patent number: 7618713
    Abstract: A circuit-connecting material which is interposed between circuit electrodes facing each other and electrically connects the electrodes in the pressing direction by pressing the facing electrodes against each other; the circuit-connecting material comprising as essential components (1) a curing agent capable of generating free radicals upon heating, (2) a hydroxyl-group-containing resin having a molecular weight of 10,000 or more and (3) a radical-polymerizable substance. Also provided are a circuit terminal connected structure and a circuit terminal connecting method which make use of such a material.
    Type: Grant
    Filed: September 16, 2005
    Date of Patent: November 17, 2009
    Assignee: Hitachi Chemical Company, Ltd.
    Inventors: Itsuo Watanabe, Tohru Fujinawa, Motohiro Arifuku, Houko Kanazawa, Atushi Kuwano
  • Patent number: 7604868
    Abstract: A circuit-connecting material which is interposed between circuit electrodes facing each other and electrically connects the electrodes in the pressing direction by pressing the facing electrodes against each other; the circuit-connecting material comprising as essential components (1) a curing agent capable of generating free radicals upon heating, (2) a hydroxyl-group-containing resin having a molecular weight of 10,000 or more and (3) a radical-polymerizable substance. Also provided are a circuit terminal connected structure and a circuit terminal connecting method which make use of such a material.
    Type: Grant
    Filed: September 16, 2005
    Date of Patent: October 20, 2009
    Assignee: Hitachi Chemical Company, Ltd.
    Inventors: Itsuo Watanabe, Tohru Fujinawa, Motohiro Arifuku, Houko Kanazawa, Atushi Kuwano
  • Patent number: 7553890
    Abstract: A circuit-connecting material which is interposed between circuit electrodes facing each other and electrically connects the electrodes in the pressing direction by pressing the facing electrodes against each other; the circuit-connecting material comprising as essential components (1) a curing agent capable of generating free radicals upon heating, (2) a hydroxyl-group-containing resin having a molecular weight of 10,000 or more and (3) a radical-polymerizable substance. Also provided are a circuit terminal connected structure and a circuit terminal connecting method which make use of such a material.
    Type: Grant
    Filed: August 20, 2007
    Date of Patent: June 30, 2009
    Assignee: Hitachi Chemical Company, Ltd.
    Inventors: Itsuo Watanabe, Tohru Fujinawa, Motohiro Arifuku, Houko Kanazawa, Atsushi Kuwano
  • Publication number: 20080064233
    Abstract: A circuit-connecting material which is interposed between circuit electrodes facing each other and electrically connects the electrodes in the pressing direction by pressing the facing electrodes against each other; the circuit-connecting material comprising as essential components (1) a curing agent capable of generating free radicals upon heating, (2) a hydroxyl-group-containing resin having a molecular weight of 10,000 or more and (3) a radical-polymerizable substance. Also provided are a circuit terminal connected structure and a circuit terminal connecting method which make use of such a material.
    Type: Application
    Filed: August 20, 2007
    Publication date: March 13, 2008
    Applicant: HITACHI CHEMICAL CO., LTD.
    Inventors: Itsuo Watanabe, Tohru Fujinawa, Motohiro Arifuku, Houko Kanazawa, Atsushi Kuwano
  • Publication number: 20080057742
    Abstract: A circuit-connecting material which is interposed between circuit electrodes facing each other and electrically connects the electrodes in the pressing direction by pressing the facing electrodes against each other; the circuit-connecting material comprising as essential components (1) a curing agent capable of generating free radicals upon heating, (2) a hydroxyl-group-containing resin having a molecular weight of 10,000 or more and (3) a radical-polymerizable substance. Also provided are a circuit terminal connected structure and a circuit terminal connecting method which make use of such a material.
    Type: Application
    Filed: August 20, 2007
    Publication date: March 6, 2008
    Applicant: HITACHI CHEMICAL CO., LTD.
    Inventors: Itsuo Watanabe, Tohru Fujinawa, Motohiro Arifuku, Houko Kanazawa, Atsushi Kuwano
  • Publication number: 20080054225
    Abstract: A circuit-connecting material which is interposed between circuit electrodes facing each other and electrically connects the electrodes in the pressing direction by pressing the facing electrodes against each other; the circuit-connecting material comprising as essential components (1) a curing agent capable of generating free radicals upon heating, (2) a hydroxyl-group-containing resin having a molecular weight of 10,000 or more and (3) a. radical-polymerizable substance. Also provided are a circuit terminal connected structure and a circuit terminal connecting method which make use of such a material.
    Type: Application
    Filed: August 20, 2007
    Publication date: March 6, 2008
    Applicant: HITACHI CHEMICAL CO., LTD.
    Inventors: Itsuo Watanabe, Tohru Fujinawa, Motohiro Arifuku, Houko Kanazawa, Atsushi Kuwano
  • Publication number: 20070299172
    Abstract: A circuit-connecting material which is interposed between circuit electrodes facing each other and electrically connects the electrodes in the pressing direction by pressing the facing electrodes against each other; the circuit-connecting material comprising as essential components (1) a curing agent capable of generating free radicals upon heating, (2) a hydroxyl-group-containing resin having a molecular weight of 10,000 or more and (3) a radical-polymerizable substance. Also provided are a circuit terminal connected structure and a circuit terminal connecting method which make use of such a material.
    Type: Application
    Filed: August 20, 2007
    Publication date: December 27, 2007
    Applicant: HITACHI CHEMICAL CO., LTD.
    Inventors: Itsuo Watanabe, Tohru Fujinawa, Motohiro Arifuku, Houko Kanazawa, Atsushi Kuwano
  • Publication number: 20060060969
    Abstract: A circuit-connecting material which is interposed between circuit electrodes facing each other and electrically connects the electrodes in the pressing direction by pressing the facing electrodes against each other; the circuit-connecting material comprising as essential components (1) a curing agent capable of generating free radicals upon heating, (2) a hydroxyl-group-containing resin having a molecular weight of 10,000 or more and (3) a radical-polymerizable substance. Also provided are a circuit terminal connected structure and a circuit terminal connecting method which make use of such a material.
    Type: Application
    Filed: September 16, 2005
    Publication date: March 23, 2006
    Applicant: Hitachi Chemical Co., Ltd.
    Inventors: Itsuo Watanabe, Tohru Fujinawa, Motohiro Arifuku, Houko Kanazawa, Atsushi Kuwano
  • Publication number: 20060063366
    Abstract: A circuit-connecting material which is interposed between circuit electrodes facing each other and electrically connects the electrodes in the pressing direction by pressing the facing electrodes against each other; the circuit-connecting material comprising as essential components (1) a curing agent capable of generating free radicals upon heating, (2) a hydroxyl-group-containing resin having a molecular weight of 10,000 or more and (3) a radical-polymerizable substance. Also provided are a circuit terminal connected structure and a circuit terminal connecting method which make use of such a material.
    Type: Application
    Filed: September 16, 2005
    Publication date: March 23, 2006
    Applicant: Hitachi Chemical Co., Ltd.
    Inventors: Itsuo Watanabe, Tohru Fujinawa, Motohiro Arifuku, Houko Kanazawa, Atsushi Kuwano
  • Publication number: 20060014860
    Abstract: A circuit-connecting material which is interposed between circuit electrodes facing each other and electrically connects the electrodes in the pressing direction by pressing the facing electrodes against each other; the circuit-connecting material comprising as essential components (1) a curing agent capable of generating free radicals upon heating, (2) a hydroxyl-group-containing resin having a molecular weight of 10,000 or more and (3) a radical-polymerizable substance. Also provided are a circuit terminal connected structure and a circuit terminal connecting method which make use of such a material.
    Type: Application
    Filed: September 16, 2005
    Publication date: January 19, 2006
    Applicant: Hitachi Chemical Co., Ltd.
    Inventors: Itsuo Watanabe, Tohru Fujinawa, Motohiro Arifuku, Houko Kanazawa, Atsushi Kuwano
  • Publication number: 20040222408
    Abstract: A circuit-connecting material which is interposed between circuit electrodes facing each other and electrically connects the electrodes in the pressing direction by pressing the facing electrodes against each other; the circuit-connecting material comprising as essential components (1) a curing agent capable of generating free radicals upon heating, (2) a hydroxyl-group-containing resin having a molecular weight of 10,000 or more and (3) a radical-polymerizable substance. Also provided are a circuit terminal connected structure and a circuit terminal connecting method which make use of such a material.
    Type: Application
    Filed: June 4, 2004
    Publication date: November 11, 2004
    Applicant: Hitachi Chemical Company, Ltd.
    Inventors: Itsuo Watanabe, Tohru Fujinawa, Motohiro Arifuku, Houko Kanazawa, Atsushi Kuwano
  • Patent number: 6777464
    Abstract: A circuit-connecting material which is interposed between circuit electrodes facing each other and electrically connects the electrodes in the pressing direction by pressing the facing electrodes against each other; the circuit-connecting material comprising as essential components (1) a curing agent capable of generating free radicals upon heating, (2) hydroxyl-group-containing resin having a molecular weight of 10,000 or more and (3) a radical-polymerizable substance. Also provided are a circuit terminal connected structure and a circuit terminal connecting method which make use of such a material.
    Type: Grant
    Filed: December 16, 1999
    Date of Patent: August 17, 2004
    Assignee: Hitachi Chemical Company, Ltd.
    Inventors: Itsuo Watanabe, Tohru Fujinawa, Motohiro Arifuku, Houko Kanazawa, Atsushi Kuwano