Patents by Inventor Shigeki Arai

Shigeki Arai 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).

  • Apparatus for crystal growth of biomacromolecules
    Patent number: 7819973
    Abstract: A method comprising the steps of continuously changing the concentrations in solution of a biomacromolecule to be crystallized and a precipitant, thereby constructing a crystal phase diagram containing a solubility curve, searching for optimum conditions of crystallization on the basis of the constructed crystal phase diagram, and performing efficient growth of the crystal of the biomacromolecule. Also disclosed is an apparatus for implementing the method.
    Type: Grant
    Filed: June 21, 2006
    Date of Patent: October 26, 2010
    Assignee: Japan Atomic Energy Research Institute
    Inventors: Nobuo Niimura, Yuki Onishi, Shigeki Arai, Toshiyuki Chatake, Mitsuru Maeda, Kazuo Kurihara
  • Apparatus for crystal growth of biomacromolecules
    Publication number: 20060236924
    Abstract: A method comprising the steps of continuously changing the concentrations in solution of a biomacromolecule to be crystallized and a precipitant, thereby constructing a crystal phase diagram containing a solubility curve, searching for optimum conditions of crystallization on the basis of the constructed crystal phase diagram, and performing efficient growth of the crystal of the biomacromolecule. Also disclosed is an apparatus for implementing the method.
    Type: Application
    Filed: June 21, 2006
    Publication date: October 26, 2006
    Applicant: Japan Atomic Energy Research Institute
    Inventors: Nobuo Niimura, Yuki Onishi, Shigeki Arai, Toshiyuki Chatake, Mitsuru Maeda, Kazuo Kurihara
  • Apparatus for crystal growth of biomacromolecules
    Publication number: 20030233978
    Abstract: A method comprising the steps of continuously changing the concentrations in solution of a biomacromolecule to be crystallized and a precipitant, thereby constructing a crystal phase diagram containing a solubility curve, searching for optimum conditions of crystallization on the basis of the constructed crystal phase diagram, and performing efficient growth of the crystal of the biomacromolecule. Also disclosed is an apparatus for implementing the method.
    Type: Application
    Filed: June 20, 2003
    Publication date: December 25, 2003
    Applicant: Japan Atomic Energy Research Institute
    Inventors: Nobuo Niimura, Yuki Onishi, Shigeki Arai, Toshiyuki Chatake, Mitsuru Maeda, Kazuo Kurihara
  • Steam isolation valve
    Patent number: 5280506
    Abstract: A main steam isolation valve of a reactor power plant comprises a valve body provided with inlet and outlet portions through which a steam flows, a cylindrical valve disk accommodated in the valve body to be reciprocatingly movable therein along an inner peripheral surface of the valve body for opening and closing the steam flow inlet portion and a driving mechanism secured to the valve body and operatively connected to the valve disk for reciprocatingly moving the valve disk in the valve body. A coupling member is applied to an end opening of the valve body for holding the valve disk when the valve disk is shifted to a position fully opening the inlet portion. A tubular wall member is integrally formed with the valve body so as to surround the valve disk with a gap therebetween when the valve disk is fully opened. A guide rib is further disposed to the valve body for causing asymmetric steam flow in the inlet portion of the steam flow of the valve body.
    Type: Grant
    Filed: June 12, 1991
    Date of Patent: January 18, 1994
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Katsumi Yamada, Hiroshi Miyano, Noboru Saito, Tetsuzo Yamamoto, Hideaki Takahashi, Takashi Matsunaga, Shigeki Arai
  • Multi-function programmable electronic calculator
    Patent number: D317780
    Type: Grant
    Filed: June 26, 1989
    Date of Patent: June 25, 1991
    Assignee: Casio Computer Co., Ltd.
    Inventor: Shigeki Arai