Patents by Inventor Tokuji Kitsunai

Tokuji Kitsunai 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: 20090232704
    Abstract: A system completely automates process steps to reduce contamination, enables quantification of products, and reduces the defective ratio. Sample containers are transported on a unit by unit basis, each unit consisting of a predetermined number of containers, and supplied to the individual dispensing/aspiration apparatuses and each reaction bath. In order to ensure quantification and reliability of the reaction/processing of the sample, a reaction monitoring sensor is provided, and the sample containers are affixed with barcodes to identify the samples. Samples determined through monitoring to be defective are returned to a predetermined step site where reaction/processing is performed again.
    Type: Application
    Filed: February 8, 2006
    Publication date: September 17, 2009
    Inventors: Naoshi Dohmae, Hiroshi Nakayama, Tokuji Kitsunai
  • Patent number: 7541195
    Abstract: The substrate for biomolecule microarray has one or more spots for immobilizing a biomolecule. The spot for immobilizing a biomolecule protrudes from the surface of the substrate and has a flat surface for spotting on the top thereof, at least the surface of the substrate around the protruding spot part, the lateral surface of the protruding spot part and the flat surface for spotting are comprised of an electrically conductive substance. Alternatively, the spot for immobilizing a biomolecule protrudes from the surface of the substrate and has a flat surface for spotting on the top thereof, the protruding spot parts adjacent each other border through the lateral surface of the protruding spot part, and at least the lateral surface of the protruding spot part and the flat surface for spotting are comprised of an electrically conductive substance.
    Type: Grant
    Filed: June 9, 2004
    Date of Patent: June 2, 2009
    Assignee: Riken
    Inventors: Hideo Tashiro, Yasumitsu Kondoh, Tokuji Kitsunai, Satoru Hatakeyama
  • Publication number: 20070037155
    Abstract: The substrate for biomolecule microarray has one or more spots for immobilizing a biomolecule. The spot for immobilizing a biomolecule protrudes from the surface of the substrate and has a flat surface for spotting on the top thereof, at least the surface of the substrate around the protruding spot part, the lateral surface of the protruding spot part and the flat surface for spotting are comprised of an electrically conductive substance. Alternatively, the spot for immobilizing a biomolecule protrudes from the surface of the substrate and has a flat surface for spotting on the top thereof, the protruding spot parts adjacent each other border through the lateral surface of the protruding spot part, and at least the lateral surface of the protruding spot part and the flat surface for spotting are comprised of an electrically conductive substance.
    Type: Application
    Filed: June 9, 2004
    Publication date: February 15, 2007
    Applicant: RIKEN
    Inventors: Hideo Tashiro, Yasumitsu Kondoh, Tokuji Kitsunai, Satoru Hatakeyama
  • Publication number: 20060035220
    Abstract: A biomolecular microarray substrate having a spot for fixing a biomolecular probe on a surface thereof. The spot of light-reflecting layer is present between the biomolecular probe-fixing spot and the substrate surface. A method of manufacturing the biomolecular microarray substrate. A biomolecular microarray having a biomolecular probe-fixing spot in which a biomolecular probe is fixed by a biomolecular probe-fixing spot having the biomolecular microarray substrate. A data collection method for biomolecular arrays.
    Type: Application
    Filed: November 21, 2002
    Publication date: February 16, 2006
    Inventors: Hideo Tashiro, Yasumitsu Kondoh, Tokuji Kitsunai, Kaori Honda
  • Patent number: 6855541
    Abstract: This invention provides a kit used for fabricating an integrated biomolecule sensor. The kit includes an optical fiber bundle unit, which holds the proximal ends of the plurality of optical fibers together with the end-face arranged substantially in the same plane and oriented substantially in the same direction, a plate with wells for holding solutions containing probe polymers with different base sequences, and an auxiliary plate having holes, which corresponds to the wells of the plate respectively. According to this invention, researchers and other people can easily fabricate the integrated biomolecule under individual requirements without need of expensive equipment.
    Type: Grant
    Filed: October 1, 2003
    Date of Patent: February 15, 2005
    Assignee: Riken
    Inventors: Hideo Tashiro, Yasumitsu Kondoh, Tokuji Kitsunai, Tomoko Tashiro
  • Patent number: 6844185
    Abstract: An integrated biomolecule sensor comprising a plurality of optical fibers whose proximal ends are held together with the end-faces arranged substantially in the same plane and oriented substantially in the same direction and which have probe polymers with different base sequences bound to the core end-face at their distal ends. The method and apparatus for fabricating the integrated biomolecule sensor, and the method and apparatus for detecting biomolecules using the integrated biomolecule sensor are also disclosed. Researchers can make their own sensors best suited for individual requirements, and detect the presence of target biomolecules quickly, without need of expensive equipment.
    Type: Grant
    Filed: September 25, 2001
    Date of Patent: January 18, 2005
    Assignee: Riken
    Inventors: Hideo Tashiro, Yasumitsu Kondoh, Tokuji Kitsunai, Tomoko Tashiro
  • Publication number: 20040096962
    Abstract: An integrated biomolecule sensor comprising a plurality of optical fibers whose proximal ends are held together with the end-faces arranged substantially in the same plane and oriented substantially in the same direction and which have probe polymers with different base sequences bound to the core end-face at their distal ends. The method and apparatus for fabricating the integrated biomolecule sensor, and the method and apparatus for detecting biomolecules using the integrated biomolecule sensor are also disclosed. Researchers can make their own sensors best suited for individual requirements, and detect the presence of target biomolecules quickly, without need of expensive equipment.
    Type: Application
    Filed: October 1, 2003
    Publication date: May 20, 2004
    Inventors: Hideo Tashiro, Yasumitsu Kondoh, Tokuji Kitsunai, Tomoko Tashiro
  • Patent number: 6605257
    Abstract: A present micro array manufacturing apparatus includes a substrate placement portion 11 on which a plurality of substrates can be arranged, a tighter plate 12 for storing a solution including a living body sample, a solution storing member 52 for taking in the solution from the tighter plate 12 and storing the solution therein, and a needle 51 which can be inserted into the solution storing member 52 to allow the solution stored in the solution storing member 52 to adhere onto each of the substrates by a given quantity, wherein the solution storing member 52 and needle 51 are moved in directions where they approach and part away from the substrates to thereby form spots on the substrates. And, the individual operations of the solution storing member 52 and needle 51 are carried out by single drive means 32.
    Type: Grant
    Filed: August 7, 2000
    Date of Patent: August 12, 2003
    Assignees: THK Co., LTD, Riken
    Inventors: Touji Nakazawa, Akihiro Iimura, Hideo Tashiro, Tokuji Kitsunai, Yoshihide Hayashizaki
  • Publication number: 20030134316
    Abstract: A method of stirring a reaction solution in a micro reaction vessel by imparting magnetic field fluctuation from the exterior of said reaction vessel to magnetic beads contained in said reaction solution. The reaction solution in a micro reaction vessel can be efficiently stirred.
    Type: Application
    Filed: December 18, 2002
    Publication date: July 17, 2003
    Inventors: Hideo Tashiro, Tokuji Kitsunai, Yasumitsu Kondoh, Chikara Koike
  • Publication number: 20020081715
    Abstract: A biomolecule microarray support for spotting solutions containing probe biomolecules on the surface and immobilizing the probe biomolecules in the solutions to the surface, characterized in that a plurality of small-sized probe biomolecule-attachable spots are arrayed in a regular arrangement on the surface of the support. A biomolecule microarray, made by spotting solutions containing probe biomolecules on the biomolecule-attachable spots on the support and immobilizing the biomolecules to the spots, can be used for quantitative analysis because of uniform and unvarying numbers of probe biomolecules bound to the spots. It also makes possible high S/N ratio measurement because of prevented nonspecific adsorption of target biomolecules to the surface of the support other than the detection spots. The biomolecule microarray support is fabricated precisely and efficiently by the method of the present invention using the photolithography and etching technique.
    Type: Application
    Filed: November 21, 2001
    Publication date: June 27, 2002
    Inventors: Hideo Tashiro, Yasumitsu Kondoh, Tokuji Kitsunai, Shigeori Takenaka, Kazuko Matsumoto, Takahiko Nojima
  • Publication number: 20020037526
    Abstract: An integrated biomolecule sensor comprising a plurality of optical fibers whose proximal ends are held together with the end-faces arranged substantially in the same plane and oriented substantially in the same direction and which have probe polymers with different base sequences bound to the core end-face at their distal ends. The method and apparatus for fabricating the integrated biomolecule sensor, and the method and apparatus for detecting biomolecules using the integrated biomolecule sensor are also disclosed. Researchers can make their own sensors best suited for individual requirements, and detect the presence of target biomolecules quickly, without need of expensive equipment.
    Type: Application
    Filed: September 25, 2001
    Publication date: March 28, 2002
    Inventors: Hideo Tashiro, Yasumitsu Kondoh, Tokuji Kitsunai, Tomoko Tashiro
  • Patent number: 4075062
    Abstract: The present invention relates to a throw-in type colorimeter having a defoaming mechanism comprising a double-cylinder whereby it is possible to very easily detect the optical density of the solution to be examined, and more particularly to a thrown-in type colorimeter equipped with a defoaming device in which a downward flow is created in a cylinder by means of the liquid level column difference in the inlet of the cylinder to let the bubbles in the solution escape upwardly therefrom and also equipped with an upward solution flow passage to provide a communicating passage between the outer and inner cylinders to form a down flow in the outer cylinder and drive the remaining bubbles out of the solution in the outer cylinder by the twice reversed flow while removing the bubbles residing in the measuring chamber by the agitated solution flow.
    Type: Grant
    Filed: June 8, 1976
    Date of Patent: February 21, 1978
    Assignee: Rikagaku Kenkyusho
    Inventors: Takehiko Shibata, Tadahiko Ando, Tokuji Kitsunai, Norio Kamiyama, Yoshifumi Oikawa