Patents by Inventor Shirou Takeno

Shirou Takeno 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).

  • Hydrogen absorbing alloy and secondary battery
    Patent number: 7501207
    Abstract: The present invention provides a hydrogen absorbing alloy containing as a principal phase at least one phase selected from the group consisting of a second phase having a rhombohedral crystal structure and a first phase having a crystal structure of a hexagonal system excluding a phase having a CaCu5 type structure, wherein a content of a phase having a crystal structure of AB2 type is not higher than 10% by volume including 0% by volume and the hydrogen absorbing alloy has a composition represented by general formula (1) given below: R1-a-bMgaTbNiZ-X-Y-?M1XM2YMn???(1).
    Type: Grant
    Filed: April 25, 2007
    Date of Patent: March 10, 2009
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Isao Sakai, Tatsuoki Kohno, Shirou Takeno, Takamichi Inaba, Hideki Yoshida, Masaaki Yamamoto, Hirotaka Hayashida, Shusuke Inada, Hiroshi Kitayama, Motoya Kanda, Fumiyuki Kawashima, Takao Sawa
  • Hydrogen absorbing alloy and secondary battery
    Patent number: 7300720
    Abstract: The present invention provides a hydrogen absorbing alloy containing as a principal phase at least one phase selected from the group consisting of a second phase having a rhombohedral crystal structure and a first phase having a crystal structure of a hexagonal system excluding a phase having a CaCu5 type structure, wherein a content of a phase having a crystal structure of AB2 type is not higher than 10% by volume including 0% by volume and the hydrogen absorbing alloy has a composition represented by general formula (1) given below: R1-a-bMgaTbNiZ-X-Y-?M1XM2YMn?.
    Type: Grant
    Filed: December 1, 2005
    Date of Patent: November 27, 2007
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Isao Sakai, Tatsuoki Kohno, Shirou Takeno, Takamichi Inaba, Hideki Yoshida, Masaaki Yamamoto, Hirotaka Hayashida, Shusuke Inada, Hiroshi Kitayama, Motoya Kanda, Fumiyuki Kawashima, Takao Sawa
  • HYDROGEN ABSORBING ALLOY AND SECONDARY BATTERY
    Publication number: 20070259264
    Abstract: The present invention provides a hydrogen absorbing alloy containing as a principal phase at least one phase selected from the group consisting of a second phase having a rhombohedral crystal structure and a first phase having a crystal structure of a hexagonal system excluding a phase having a CaCu5 type structure, wherein a content of a phase having a crystal structure of AB2 type is not higher than 10% by volume including 0% by volume and the hydrogen absorbing alloy has a composition represented by general formula (1) given below: R1-a-bMgaTbNiZ-X-Y-?M1XM2YMn???(1)
    Type: Application
    Filed: April 25, 2007
    Publication date: November 8, 2007
    Inventors: Isao Sakai, Tatsuoki Kohno, Shirou Takeno, Takamichi Inaba, Hideki Yoshida, Masaaki Yamamoto, Hirotaka Hayashida, Shusuke Inada, Hiroshi Kitayama, Motoya Kanda, Fumiyuki Kawashima, Takao Sawa
  • HYDROGEN ABSORBING ALLOY AND SECONDARY BATTERY
    Publication number: 20070190417
    Abstract: The present invention provides a hydrogen absorbing alloy containing as a principal phase at least one phase selected from the group consisting of a second phase having a rhombohedral crystal structure and a first phase having a crystal structure of a hexagonal system excluding a phase having a CaCu5 type structure, wherein a content of a phase having a crystal structure of AB2 type is not higher than 10% by volume including 0% by volume and the hydrogen absorbing alloy has a composition represented by general formula (1) given below: R1-a-bMgaTbNiZ-X-Y-?M1XM2YMn???(1)
    Type: Application
    Filed: April 25, 2007
    Publication date: August 16, 2007
    Inventors: Isao Sakai, Tatsuoki Kohno, Shirou Takeno, Takamichi Inaba, Hideki Yoshida, Masaaki Yamamoto, Hirotaka Hayashida, Shusuke Inada, Hiroshi Kitayama, Motoya Kanda, Fumiyuki Kawashima, Takao Sawa
  • Hydrogen absorbing alloy and secondary battery
    Publication number: 20060254678
    Abstract: The present invention provides a hydrogen absorbing alloy containing as a principal phase at least one phase selected from the group consisting of a second phase having a rhombohedral crystal structure and a first phase having a crystal structure of a hexagonal system excluding a phase having a CaCu5 type structure, wherein a content of a phase having a crystal structure of AB2 type is not higher than 10% by volume including 0% by volume and the hydrogen absorbing alloy has a composition represented by general formula (1) given below: R1-a-bMgaTbNiZ-X-Y-?M1XM2YMn???(1)
    Type: Application
    Filed: December 1, 2005
    Publication date: November 16, 2006
    Inventors: Isao Sakai, Tatsuoki Kohno, Shirou Takeno, Takamichi Inaba, Hideki Yoshida, Masaaki Yamamoto, Hirotaka Hayashida, Shusuke Inada, Hiroshi Kitayama, Motoya Kanda, Fumiyuki Kawashima, Takao Sawa
  • Hydrogen absorbing alloy and secondary battery
    Patent number: 7005212
    Abstract: The present invention provides a hydrogen absorbing alloy containing as a principal phase at least one phase selected from the group consisting of a second phase having a rhombohedral crystal structure and a first phase having a crystal structure of a hexagonal system excluding a phase having a CaCu5 type structure, wherein a content of a phase having a crystal structure of AB2 type is not higher than 10% by volume including 0% by volume and the hydrogen absorbing alloy has a composition represented by general formula (1) given below: R1-a-bMgaTbNiZ-X-Y-?M1XM2YMn?.
    Type: Grant
    Filed: June 27, 2002
    Date of Patent: February 28, 2006
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Isao Sakai, Tatsuoki Kohno, Shirou Takeno, Takamichi Inaba, Hideki Yoshida, Masaaki Yamamoto, Hirotaka Hayashida, Shusuke Inada, Hiroshi Kitayama, Motoya Kanda, Fumiyuki Kawashima, Takao Sawa
  • Hydrogen absorbing alloy and secondary battery
    Publication number: 20030096164
    Abstract: The present invention provides a hydrogen absorbing alloy containing as a principal phase at least one phase selected from the group consisting of a second phase having a rhombohedral crystal structure and a first phase having a crystal structure of a hexagonal system excluding a phase having a CaCu5 type structure, wherein a content of a phase having a crystal structure of AB2 type is not higher than 10% by volume including 0% by volume and the hydrogen absorbing alloy has a composition represented by general formula (1) given below:
    Type: Application
    Filed: June 27, 2002
    Publication date: May 22, 2003
    Inventors: Isao Sakai, Tatsuoki Kohno, Shirou Takeno, Takamichi Inaba, Hideki Yoshida, Masaaki Yamamoto, Hirotaka Hayashida, Shusuke Inada, Hiroshi Kitayama, Motoya Kanda, Fumiyuki Kawashima, Takao Sawa
  • Nonaqueous electrolyte secondary battery
    Patent number: 6495291
    Abstract: The present invention provides a nonaqueous electrolyte secondary battery, comprising a nonaqueous electrolyte, a positive electrode, and a negative electrode containing a negative electrode active material, wherein the negative electrode active material contains a composite material having a microstructure containing a carbon-containing phase and a crystal phase having an average size falling within a range of between 0.01 &mgr;m and 10 &mgr;m.
    Type: Grant
    Filed: August 8, 2000
    Date of Patent: December 17, 2002
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Tatsuoki Kohno, Norio Takami, Hiroki Inagaki, Tomokazu Morita, Shirou Takeno