Patents by Inventor Hiromu Sakurai

Hiromu Sakurai 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: 20180128716
    Abstract: Minute particles in a gas generated in a particle generating unit are charged by a charging unit. A concentrating unit concentrates charged particles in an introduced gas, and a collecting unit absorbs and collects the concentrated charged particles on a sample plate by an electrostatic force. In the concentrating unit, the charged particles are concentrated by decreasing a flow rate of a gas (carrier gas) in which particles are dispersed while maintaining the number of introduced charged particles. When the flow rate of the gas decreases, and spatial density of the particles increases, it is possible to efficiently collect charged particles on the small sample plate in the collecting unit, and to shorten a collection time.
    Type: Application
    Filed: November 9, 2017
    Publication date: May 10, 2018
    Applicant: Shimadzu Corporation
    Inventors: Hiroshi Seki, Yoshihiro Ueno, Hiroshi Okuda, Hiromu Sakurai
  • Publication number: 20180071750
    Abstract: A gas stream containing charged particles is introduced through a first gas inlet port into a first space, while another gas stream containing charged particles is introduced through a second gas inlet port into a second space located below and separated from the first space by a mesh-like filter. Voltages are respectively applied to an upper plate electrode, lower plate electrode 16 and filter to create a DC electric field within a housing. Due to this electric field, the charged particles contained in the gas stream flowing in the first space move toward the second space. The charged particles which have entered the second space through the openings of the filter are extracted through a gas outlet port along with the charged particles originally contained in the gas stream flowing in the second space.
    Type: Application
    Filed: September 7, 2017
    Publication date: March 15, 2018
    Applicant: SHIMADZU CORPORATION
    Inventors: Hiroshi SEKI, Yoshihiro UENO, Hiroshi OKUDA, Hiromu SAKURAI
  • Publication number: 20170138831
    Abstract: In unipolar charging, a discharge current value at which charging efficiency is best and a discharge current dependency of multivalent charging differ depending on the particle size of the particles that are the object of charging. Therefore, for each particle size, a discharge voltage at which univalent charging efficiency is best and a discharge voltage at which the signal-to-noise ratio of a signal when particles of a different size are regarded as noise is best are obtained through experiment and stored in a storage unit (21).
    Type: Application
    Filed: June 26, 2015
    Publication date: May 18, 2017
    Applicants: SHIMADZU CORPORATION, NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
    Inventors: Hiroshi OKUDA, Yoshihiro UENO, Hiroshi SEKI, Hiromu SAKURAI
  • Patent number: 7855868
    Abstract: An aerosol charge neutralizing device simple in structure and easy to maintain, comprising an aerosol passing container that has a conductive material-made tube body constituting an aerosol passing path permitting aerosol to flow therethrough and has an opening pair consisting of openings in pair disposed oppositely across the center line of the tube body and penetrating through the wall surface of the tube body, and insulation tube that has an insulation material-made tube, has a window pair consisting of windows in pair disposed oppositely across the center line of the tube and penetrating through the wall surface of the tube, and is fitted concentrically over the outer surface of the aerosol passing container with the windows coinciding with the openings, a bipolar ionizing element that has a discharge electrode on a dielectric film and is attached to the insulation tube with the windows closed and the discharge electrode exposed to the aerosol passing path, and an outer tube that includes air-tightly the
    Type: Grant
    Filed: November 21, 2006
    Date of Patent: December 21, 2010
    Assignees: Tsukasa Sokken Co., Ltd., National Institute of Advanced Industrial Science and Technology
    Inventors: Tsuyoshi Taishi, Tetsuji Koyama, Soon Bark Kwon, Takafumi Seto, Hiromu Sakurai
  • Publication number: 20090047189
    Abstract: An aerosol charge neutralizing device simple in structure and easy to maintain, comprising an aerosol passing container that has a conductive material-made tube body constituting an aerosol passing path permitting aerosol to flow therethrough and has an opening pair consisting of openings in pair disposed oppositely across the center line of the tube body and penetrating through the wall surface of the tube body, and insulation tube that has an insulation material-made tube, has a window pair consisting of windows in pair disposed oppositely across the center line of the tube and penetrating through the wall surface of the tube, and is fitted concentrically over the outer surface of the aerosol passing container with the windows coinciding with the openings, a bipolar ionizing element that has a discharge electrode on a dielectric film and is attached to the insulation tube with the windows closed and the discharge electrode exposed to the aerosol passing path, and an outer tube that includes air-tightly the
    Type: Application
    Filed: November 21, 2006
    Publication date: February 19, 2009
    Applicants: TSUKASA SOKKEN CO., LTD., National Institute of Advanced Industrial Science and Technology
    Inventors: Tsuyoshi Taishi, Tetsuji Koyama, Soon Bark Kwon, Takafumi Seto, Hiromu Sakurai
  • Publication number: 20070155655
    Abstract: A zinc(II) complex which is lowly toxic, has high insulin-like activity, and is effectively usable as a hypoglycemic agent for the prevention or treatment of diabetes; a hypoglycemic agent containing the complex; a medicinal preparation which contains the complex and is useful as a preventive/remedy for diabetes; and a food containing the complex, such as a health food or supplementary health food. The hypoglycemic agent contains an organic zinc(II) complex having as a ligand a compound selected among aminoalkylpyridines, bis-optically active amino acids, bisaminoalkylcarboxylic acids, oligopeptides, oligopseudopeptides, di-substituted aminocarboxylic acids, ?- and ?-hydroxycarboxylic acids, vitamins, glutamine derivatives, etc.
    Type: Application
    Filed: December 1, 2006
    Publication date: July 5, 2007
    Applicant: Japan Science and Technology Corporation
    Inventors: Yoshitane Kojima, Hiromu Sakurai, Yutaka Yoshikawa
  • Publication number: 20070155656
    Abstract: A zinc(II) complex which is lowly toxic, has high insulin-like activity, and is effectively usable as a hypoglycemic agent for the prevention or treatment of diabetes; a hypoglycemic agent containing the complex; a medicinal preparation which contains the complex and is useful as a preventive/remedy for diabetes; and a food containing the complex, such as a health food or supplementary health food. The hypoglycemic agent contains an organic zinc(II) complex having as a ligand a compound selected among aminoalkylpyridines, bis-optically active amino acids, bisaminoalkylcarboxylic acids, oligopeptides, oligopseudopeptides, di-substituted aminocarboxylic acids, ?- and ?-hydroxycarboxylic acids, vitamins, glutamine derivatives, etc.
    Type: Application
    Filed: December 4, 2006
    Publication date: July 5, 2007
    Applicant: Japan Science and Technology Corporation
    Inventors: Yoshitane Kojima, Hiromu Sakurai, Yutaka Yoshikawa
  • Publication number: 20070155657
    Abstract: A zinc(II) complex which is lowly toxic, has high insulin-like activity, and is effectively usable as a hypoglycemic agent for the prevention or treatment of diabetes; a hypoglycemic agent containing the complex; a medicinal preparation which contains the complex and is useful as a preventive/remedy for diabetes; and a food containing the complex, such as a health food or supplementary health food. The hypoglycemic agent contains an organic zinc(II) complex having as a ligand a compound selected among aminoalkylpyridines, bis-optically active amino acids, bisaminoalkylcarboxylic acids, oligopeptides, oligopseudopeptides, di-substituted aminocarboxylic acids, ?- and ?-hydroxycarboxylic acids, vitamins, glutamine derivatives, etc.
    Type: Application
    Filed: December 4, 2006
    Publication date: July 5, 2007
    Applicant: Japan Science and Technology Corporation
    Inventors: Yoshitane Kojima, Hiromu Sakurai, Yutaka Yoshikawa
  • Patent number: 7226935
    Abstract: A zinc(II) complex which is lowly toxic, has high insulin-like activity, and is effectively usable as a hypoglycemic agent for the prevention or treatment of diabetes; a hypoglycemic agent containing the complex; a medicinal preparation which contains the complex and is useful as a preventive/remedy for diabetes; and a food containing the complex, such as a health food or supplementary health food. The hypoglycemic agent contains an organic zinc(II) complex having as a ligand a compound selected among aminoalkylpyridines, bis-optically active amino acids, bisaminoalkylcarboxylic acids, oligopeptides, oligopseudopeptides, di-substituted aminocarboxylic acids, ?- and ?-hydroxycarboxylic acids, vitamins, glutamine derivatives, etc.
    Type: Grant
    Filed: January 25, 2002
    Date of Patent: June 5, 2007
    Assignee: Japan Science and Technology Corporation
    Inventors: Yoshitane Kojima, Hiromu Sakurai, Yutaka Yoshikawa
  • Publication number: 20060153897
    Abstract: It is intended to provide foods such as health (supplementary) foods, nutrition (supplementary) foods and foods with health claims (foods for specified health uses and foods with nutrient function claims) containing zinc compositions which are less toxic and have a high insulin-like activity. Foods containing organic compounds capable of forming a complex with zinc and zinc sources. More specifically, foods such as health foods, health supplementary foods, nutrition foods nutrition supplementary foods and foods with health claims (foods for specified health uses and foods with nutrient function claims) containing organic compounds such as picolinic acid, L-amino acids, oligopeptides, niacin, maltol, etc. and organic zinc complexes or mineral acid salts of zinc containing these compounds as a ligand and having an effect of lowering blood glucose level.
    Type: Application
    Filed: March 8, 2006
    Publication date: July 13, 2006
    Inventors: Yoshitane Kojima, Hiromu Sakurai, Yutaka Yoshikawa
  • Publication number: 20050130880
    Abstract: A zinc(II) complex which is lowly toxic, has high insulin-like activity, and is effectively usable as a hypoglycemic agent for the prevention or treatment of diabetes; a hypoglycemic agent containing the complex; a medicinal preparation which contains the complex and is useful as a preventive/remedy for diabetes; and a food containing the complex, such as a health food or supplementary health food. The hypoglycemic agent contains an organic zinc(II) complex having as a ligand a compound selected among aminoalkylpyridines, bis-optically active amino acids, bisaminoalkylcarboxylic acids, oligopeptides, oligopseudopeptides, di-substituted aminocarboxylic acids, ?- and ?-hydroxycarboxylic acids, vitamins, glutamine derivatives, etc.
    Type: Application
    Filed: January 28, 2005
    Publication date: June 16, 2005
    Inventors: Yoshitane Kojima, Hiromu Sakurai, Yutaka Yoshikawa
  • Publication number: 20040137036
    Abstract: It is intended to provide foods such as health (supplementary) foods, nutrition (supplementary) foods and foods with health claims (foods for specified health uses and foods with nutrient function claims) containing zinc compositions which are less toxic and have a high insulin-like activity. Foods containing organic compounds capable of forming a complex with zinc and zinc sources. More specifically, foods such as health foods, health supplementary foods, nutrition foods nutrition supplementary foods and foods with health claims (foods for specified health uses and foods with nutrient function claims) containing organic compounds such as picolinic acid, L-amino acids, oligopeptides, niacin, maltol, etc. and organic zinc complexes or mineral acid salts of zinc containing these compounds as a ligand and having an effect of lowering blood glucose level.
    Type: Application
    Filed: October 30, 2003
    Publication date: July 15, 2004
    Inventors: Yoshitane Kojima, Hiromu Sakurai, Yutaka Yoshikawa
  • Publication number: 20040077620
    Abstract: A zinc(II) complex which is lowly toxic, has high insulin-like activity, and is effectively usable as a hypoglycemic agent for the prevention or treatment of diabetes; a hypoglycemic agent containing the complex; a medicinal preparation which contains the complex and is useful as a preventive/remedy for diabetes; and a food containing the complex, such as a health food or supplementary health food. The hypoglycemic agent contains an organic zinc(II) complex having as a ligand a compound selected among aminoalkylpyridines, bis-optically active amino acids, bisaminoalkylcarboxylic acids, oligopeptides, oligopseudopeptides, di-substituted aminocarboxylic acids, &agr;- and &bgr;-hydroxycarboxylic acids, vitamins, glutamine derivatives, etc.
    Type: Application
    Filed: July 29, 2003
    Publication date: April 22, 2004
    Inventors: Yoshitane Kojima, Hiromu Sakurai, Yutaka Yoshikawa