Patents by Inventor Hiroyuki Takeshita

Hiroyuki Takeshita 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).

  • Hybrid hydrogen storage container and method of storing hydrogen in container
    Patent number: 7681753
    Abstract: A pressure container 1 composed of a reinforcing layer 2 and a liner layer 3, with a hydrogen charging pressure of 30 MPa or higher; and a hydrogen absorbing material and a carrier for holding said hydrogen absorbing material (hydrogen absorbing material portion 4) contained in the pressure container 1 are included, and a volume fraction X of the hydrogen absorbing material with ?m?100 kg/m3 with respect to an internal volume of the pressure container 1 is 5(%)?X?20(%), where ?m denotes a maximum hydrogen absorption amount per unit volume of the hydrogen absorbing material (kg/m3); X=100 ·Vm/Vi (%); Vi is an internal volume of the pressure container (L); and Vm is a volume of the hydrogen absorbing material in the pressure container (L).
    Type: Grant
    Filed: January 31, 2003
    Date of Patent: March 23, 2010
    Assignees: JFE Steel Corporation, National Institute of Advanced Industrial Science and Technology, JFE Container Co., Ltd
    Inventors: Tomoyuki Yokota, Kenjiro Hamada, Hidekazu Tsuruta, Nobuhiro Kuriyama, Hiroyuki Takeshita, Nobuhiko Takeichi, Toshio Takano
  • Switch and manufacturing method thereof
    Patent number: 7365280
    Abstract: A switch provided with a fixed contact and a movable contact coming into contact with each other and separating from each other. The surface of at least one of the fixed contact and the movable contact is provided with a plurality of recesses whose edges are overlapped with each other, and also provided with a plurality of projections. The projections formed on the contact surface have sharp-pointed tips which can break an oxide film or the like if it is formed on the contact surface, thereby achieving stable contact.
    Type: Grant
    Filed: October 19, 2005
    Date of Patent: April 29, 2008
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Hisashi Nishikawa, Hiroyuki Kosaka, Yoshiyuki Nakade, Takao Matsui, Tetsuya Koma, Makoto Nagahara, Hiroyuki Takeshita
  • Switch and manufacturing method thereof
    Publication number: 20060084292
    Abstract: A switch provided with a fixed contact and a movable contact coming into contact with each other and separating from each other. The surface of at least one of the fixed contact and the movable contact is provided with a plurality of recesses whose edges are overlapped with each other, and also provided with a plurality of projections. The projections formed on the contact surface have sharp-pointed tips which can break an oxide film or the like if it is formed on the contact surface, thereby achieving stable contact.
    Type: Application
    Filed: October 19, 2005
    Publication date: April 20, 2006
    Applicant: Matsushita Electric Industrial Co., LTD.
    Inventors: Hisashi Nishikawa, Hiroyuki Kosaka, Yoshiyuki Nakade, Takao Matsui, Tetsuya Koma, Makoto Nagahara, Hiroyuki Takeshita
  • Hybrid hydrogen storage container and method of storing hydrogen in container
    Publication number: 20050166992
    Abstract: A pressure container 1 composed of a reinforcing layer 2 and a liner layer 3, with a hydrogen charging pressure of 30 MPa or higher; and a hydrogen absorbing material and a carrier for holding said hydrogen absorbing material (hydrogen absorbing material portion 4) contained in the pressure container 1 are included, and a volume fraction X of the hydrogen absorbing material with ?m?100 kg/m3 with respect to an internal volume of the pressure container 1 is 5(%)?X?20(%), where am denotes a maximum hydrogen absorption amount per unit volume of the hydrogen absorbing material (kg/m3); X=100 ·Vm/Vi (%); Vi is an internal volume of the pressure container (L); and Vm is a volume of the hydrogen absorbing material in the pressure container (L).
    Type: Application
    Filed: January 31, 2003
    Publication date: August 4, 2005
    Inventors: Tomoyuki Yokota, Kenjiro Hamada, Hidekazu Tsuruta, Nobuhiro Kuriyama, Hiroyuki Takeshita, Nobuhiko Takeichi, Toshio Takano
  • Hydrogen occlusion electrode
    Patent number: 5728277
    Abstract: A hydrogen occlusion electrode comprising a compact of a mixture powder including a titanium-nickel alloy which contains oxygen.
    Type: Grant
    Filed: April 1, 1997
    Date of Patent: March 17, 1998
    Assignee: Agency of Industrial Science & Technology
    Inventors: Tetsuo Sakai, Hiroyuki Takeshita, Hideaki Tanaka, Nobuhiro Kuriyama, Itsuki Uehara