Patents by Inventor Kotaro Oka

Kotaro Oka 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).

  • Publication number: 20190084209
    Abstract: An extrusion die includes a die and a core, and the core includes a movable core portion that is movable along an extrusion direction and a fixed core portion. The movable core portion has non-similar cross-sectional shapes at front and rear two positions along the extrusion direction. A first portion of the elongated weather strip is molded in a state where the movable core portion is disposed at an advance position, and a second portion of the elongated weather strip is molded in a state where the movable core portion is disposed at a retreat position. During the molding of the second portion, a supply amount per unit time of a material for the sealing portion to a molding space for the hollow sealing portion that is secured between the core and the die is set to be larger than that during the molding of the first portion.
    Type: Application
    Filed: September 1, 2016
    Publication date: March 21, 2019
    Applicant: TOKAI KOGYO CO., LTD.
    Inventors: Keiji HIROE, Kotaro OKA
  • Publication number: 20180370343
    Abstract: The weather strip configured to be attached to the automobile body opening portion is an elongated member having a length configured to correspond to a side portion and a corner portion of the automobile body opening portion and includes a hollow sealing portion. A surface of the sealing portion corresponding to a floor-side side portion and a surface of the sealing portion corresponding to a floor-side corner portion are continuous to each other. A wall thickness of the sealing portion corresponding to the floor-side side portion is set to be smaller than a wall thickness of the sealing portion corresponding to the floor-side corner portion. The sealing portion corresponding to the floor-side side portion includes a portion having a smallest wall thickness among the entire sealing portion.
    Type: Application
    Filed: September 1, 2016
    Publication date: December 27, 2018
    Applicant: TOKAI KOGYO CO., LTD.
    Inventors: Keiji HIROE, Akito UEDA, Kotaro OKA
  • Patent number: 7109043
    Abstract: A fluorescent probe for measuring magnesium ion, which can selectively form a complex with magnesium ion in aqueous system is disclosed. The fluorescent probe for measuring magnesium ion according to the present invention has the structure represented by the following Formula [I]: (wherein R1 represents a hydrogen atom, metal atom or an ester-forming group; A represents a group which forms a ring structure together with carbon atom 1 and carbon atom 2; and X is a fluorescent group which may form a condensed ring together with the ring containing the group A).
    Type: Grant
    Filed: July 25, 2001
    Date of Patent: September 19, 2006
    Assignees: Japan Science and Technology Corporation, The Kanagawa Academy of Science and Technology Foundation, Keio University
    Inventors: Koji Suzuki, Yoshio Suzuki, Kotaro Oka
  • Publication number: 20040044228
    Abstract: A fluorescent probe for measuring magnesium ion, which can selectively form a complex with magnesium ion in aqueous system is disclosed.
    Type: Application
    Filed: July 18, 2003
    Publication date: March 4, 2004
    Inventors: Koji Suzuki, Yoshio Suzuki, Kotaro Oka
  • Patent number: 5362325
    Abstract: A material processing apparatus includes a plurality of syringes provided detachable on a base member and containing fluids that are used for processing a material; A processing chamber is provided detachable on the base member for causing the material processing: An actuation mechanism actuates the plurality of syringes to supply the fluids in the syringes to the processing chamber; An interconnection fixture connects the plurality of syringes to the processing chamber for transporting the fluids in the plurality of syringes to the processing chamber. The plurality of syringes are provided detachable with respect to the interconnection fixture, and the processing chamber is provided detachable with respect to the interconnection fixture.
    Type: Grant
    Filed: December 23, 1993
    Date of Patent: November 8, 1994
    Assignee: Fujitsu Limited
    Inventors: Atsushi Shiraishi, Koji Asano, Makoto Gotoh, Kotaro Oka
  • Patent number: 5214288
    Abstract: A method of making a two-dimensional measurement of the concentration of a biological macromolecule aqueous solution and an apparatus for carrying out this method are disclosed. By charging the biological macromolecule aqueous solution and an aqueous crystallizing agent solution into a crystallizing cell, irradiating the crystallizing cell with an ultraviolet light from an ultraviolet light source, two-dimensionally scanning the ultraviolet light transmitted through the crystallizing cell by a linear image sensor to detect the quantity of the transmitted light, and carrying out a conversion of the detected quantity of the transmitted light to the protein concentration, the process of a crystallization of the biological macromolecule from biological macromolecule aqueous solution can be easily and accurately twodimensionally measured.
    Type: Grant
    Filed: December 18, 1991
    Date of Patent: May 25, 1993
    Assignee: Fujitsu Limited
    Inventors: Kotaro Oka, Koji Asano, Shozo Fujita