Patents by Inventor Youji Matsuda

Youji Matsuda 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).

  • Transformer
    Patent number: 7471183
    Abstract: There is provided a joint structure of a wound iron core in which iron core characteristics can be enhanced by improving the distribution of magnetic flux within an iron core. A wound iron core is formed to provide a joining structure or a butt joining structure and a lap joining structure disposed in an appropriate arrangement in which the a margin of overlapping is more increased as being closer to an outer periphery from an inner periphery of the iron core, taking a distribution of magnetic flux density within the iron core into consideration.
    Type: Grant
    Filed: October 10, 2007
    Date of Patent: December 30, 2008
    Assignee: Hitachi Industrial Equipment Systems Co., Ltd.
    Inventors: Kouji Yamashita, Youji Matsuda, Kazuo Nishiyama, Masao Hosokawa, Kazuyuki Fukui, Hidemasa Yamaguchi, Tooru Honma, Hiroyuki Endou, Makoto Shinohara
  • Transformer
    Publication number: 20080036565
    Abstract: There is provided a joint structure of a wound iron core in which iron core characteristics can be enhanced by improving the distribution of magnetic flux within an iron core. A wound iron core is formed to provide a joining structure or a butt joining structure and a lap joining structure disposed in an appropriate arrangement in which the a margin of overlapping is more increased as being closer to an outer periphery from an inner periphery of the iron core, taking a distribution of magnetic flux density within the iron core into consideration.
    Type: Application
    Filed: October 10, 2007
    Publication date: February 14, 2008
    Applicant: Hitachi Industrial Equipment Systems Co., Ltd.
    Inventors: Kouji Yamashita, Youji Matsuda, Kazuo Nishiyama, Masao Hosokawa, Kazuyuki Fukui, Hidemasa Yamaguchi, Tooru Honma, Hiroyuki Endou, Makoto Shinohara
  • Transformer
    Patent number: 7292127
    Abstract: There is provided a joint structure of a wound iron core in which iron core characteristics can be enhanced by improving the distribution of magnetic flux within an iron core. A wound iron core is formed to provide a joining structure or a butt joining structure and a lap joining structure disposed in an appropriate arrangement in which the a margin of overlapping is more increased as being closer to an outer periphery from an inner periphery of the iron core, taking a distribution of magnetic flux density within the iron core into consideration.
    Type: Grant
    Filed: May 25, 2005
    Date of Patent: November 6, 2007
    Assignee: Hitachi Industrial Equipment Systems Co., Ltd.
    Inventors: Kouji Yamashita, Youji Matsuda, Kazuo Nishiyama, Masao Hosokawa, Kazuyuki Fukui, Hidemasu Yamaguchi, Tooru Honma, Hiroyuki Endou, Makoto Shinohara
  • Transformer
    Publication number: 20050280491
    Abstract: There is provided a joint structure of a wound iron core in which iron core characteristics can be enhanced by improving the distribution of magnetic flux within an iron core. A wound iron core is formed to provide a joining structure or a butt joining structure and a lap joining structure disposed in an appropriate arrangement in which the a margin of overlapping is more increased as being closer to an outer periphery from an inner periphery of the iron core, taking a distribution of magnetic flux density within the iron core into consideration.
    Type: Application
    Filed: May 25, 2005
    Publication date: December 22, 2005
    Applicant: Hitachi, Ltd.
    Inventors: Kouji Yamashita, Youji Matsuda, Kazuo Nishiyama, Masao Hosokawa, Kazuyuki Fukui, Hidemasa Yamaguchi, Tooru Honma, Hiroyuki Endou, Makoto Shinohara