Patents by Inventor Kozo Fujimoto

Kozo Fujimoto 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: 9807889
    Abstract: An method of mounting electronic component includes: providing a connecting layer between a wiring and an electronic component, the connecting layer including a conductive layer formed of a solder powder-containing resin composition containing thermosetting resin, solder powder, and a reducing agent and one or two layers of a thermoplastic resin layer formed of thermoplastic resin; and electrically connecting the electronic component to the wiring through the connecting layer.
    Type: Grant
    Filed: July 29, 2013
    Date of Patent: October 31, 2017
    Assignees: OSAKA UNIVERSITY, SENJU METAL INDUSTRY CO., LTD.
    Inventors: Kozo Fujimoto, Shinji Fukumoto, Michiya Matsushima, Satoshi Watanabe, Takeshi Kan, Minoru Ueshima, Takeshi Sakamoto, Shu Inoue
  • Publication number: 20140029224
    Abstract: An method of mounting electronic component includes: providing a connecting layer between a wiring and an electronic component, the connecting layer including a conductive layer formed of a solder powder-containing resin composition containing thermosetting resin, solder powder, and a reducing agent and one or two layers of a thermoplastic resin layer formed of thermoplastic resin; and electrically connecting the electronic component to the wiring through the connecting layer.
    Type: Application
    Filed: July 29, 2013
    Publication date: January 30, 2014
    Applicants: SENJU METAL INDUSTRY CO., LTD., OSAKA UNIVERSITY
    Inventors: Kozo FUJIMOTO, Shinji FUKUMOTO, Michiya MATSUSHIMA, Satoshi WATANABE, Takeshi KAN, Minoru UESHIMA, Takeshi SAKAMOTO, Shu INOUE
  • Patent number: 7670879
    Abstract: The present invention provides a manufacturing method of a semiconductor module which enables the joining at a low temperature within a short time and can obtain more reliable joining portions by performing the joining without using a solder joining medium.
    Type: Grant
    Filed: March 2, 2004
    Date of Patent: March 2, 2010
    Assignee: Fuji Electric Holdings Co., Ltd.
    Inventors: Kozo Fujimoto, Hirohiko Watanabe, Kazutaka Ikemi, Keiichi Matsumura, Masayoshi Shimoda, Katsumi Taniguchi, Tomoaki Goto
  • Patent number: 7524748
    Abstract: A method of interconnecting terminals so as to obtain an excellent electrical connection between terminals such as opposing electrodes and a mounting method for semiconductor devices using this connecting method are provided. Electrode pads 21 of a semiconductor chip 20 and lands 11 which are provided on a substrate 10 so as to correspond with the electrode pads 21 are placed so as to oppose each other with an electrically conductive adhesive therebetween. Then, the electrically conductive adhesive is heated to a temperature which is higher than the melting point of electrically conductive particles contained in the electrically conductive adhesive and at which a resin is not completely cured, and the electrically conductive particles are bonded to each other. Then, the semiconductor chip 20 and the substrate 10 are secured by completely curing the resin in the electrically conductive adhesive.
    Type: Grant
    Filed: February 4, 2004
    Date of Patent: April 28, 2009
    Assignees: Senju Metal Industry Co., Ltd.
    Inventors: Kozo Fujimoto, Kiyokazu Yasuda, Jong-Min Kim
  • Publication number: 20070197017
    Abstract: The present invention provides a manufacturing method of a semiconductor module which enables the joining at a low temperature within a short time and can obtain more reliable joining portions by performing the joining without using a solder joining medium.
    Type: Application
    Filed: March 2, 2004
    Publication date: August 23, 2007
    Applicant: FUJI ELECTRIC HOLDINGS CO., LTD.
    Inventors: Kozo Fujimoto, Hirohiko Watanabe, Kazutaka Ikemi, Keiichi Matsumura, Masayoshi Shimoda, Katsumi Taniguchi, Tomoaki Goto
  • Publication number: 20070152025
    Abstract: The present invention provides an electronic part mounting method which enables joining of electrodes at a low temperature and within a short time, can obtain the high reliability and, further, enables joining at a fine pitch. In an electronic part mounting method which joins circuit electrodes which are formed over a circuit board and die electrodes which are formed over the electronic parts thus mounting the electronic parts on the circuit board, a low-melting-point metal layer is preliminarily formed over the circuit electrode and/or the die electrode and, thereafter, the circuit electrode and the die electrode are arranged to face each other and are heated and pressurized for melting low-melting-point metal thus diffusing the low-melting-point metal into the circuit electrode and the die electrode by solid-liquid diffusion.
    Type: Application
    Filed: March 2, 2004
    Publication date: July 5, 2007
    Applicant: Fuji Electric Holdings Co., Ltd.
    Inventors: Kozo Fujimoto, Kazutaka Ikemi, Hirohiko Watanabe, Keiichi Matsumura, Masayoshi Shimoda, Katsumi Taniguchi, Tomoaki Goto
  • Publication number: 20070001313
    Abstract: A method of interconnecting terminals so as to obtain an excellent electrical connection between terminals such as opposing electrodes and a mounting method for semiconductor devices using this connecting method are provided. Electrode pads 21 of a semiconductor chip 20 and lands 11 which are provided on a substrate 10 so as to correspond with the electrode pads 21 are placed so as to oppose each other with an electrically conductive adhesive therebetween. Then, the electrically conductive adhesive is heated to a temperature which is higher than the melting point of electrically conductive particles contained in the electrically conductive adhesive and at which a resin is not completely cured, and the electrically conductive particles are bonded to each other. Then, the semiconductor chip 20 and the substrate 10 are secured by completely curing the resin in the electrically conductive adhesive.
    Type: Application
    Filed: February 4, 2004
    Publication date: January 4, 2007
    Inventors: Kozo Fujimoto, Kiyokazu Yasuda, Jong-Min Kim