Patents by Inventor Hirokazu Sakaguchi

Hirokazu Sakaguchi 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: 20140256783
    Abstract: The present invention relates to a substrate including a compound having blood anticoagulation activity and a hydrophilic polymer compound, wherein the amount of elution of the compound having blood anticoagulation activity is less than 0.6 ?g/ml, and a manufacturing method of a substrate, wherein after a compound having blood anticoagulation activity and a hydrophilic compound brought in contact with a substrate are irradiated with radiation, unreacted components are washed out.
    Type: Application
    Filed: May 16, 2014
    Publication date: September 11, 2014
    Applicant: Toray Industries, Inc.
    Inventors: Hirokazu SAKAGUCHI, Hiroshi TAKAHASHI, Yoshiyuki UENO, Hiroyuki SUGAYA
  • Patent number: 8733557
    Abstract: The present invention relates to a substrate including a compound having blood anticoagulation activity and a hydrophilic polymer compound, wherein the amount of elution of the compound having blood anticoagulation activity is less than 0.6 ?g/ml, and a manufacturing method of a substrate, wherein after a compound having blood anticoagulation activity and a hydrophilic compound brought in contact with a substrate are irradiated with radiation, unreacted components are washed out.
    Type: Grant
    Filed: September 13, 2007
    Date of Patent: May 27, 2014
    Assignee: TORAY Industries, Inc.
    Inventors: Hirokazu Sakaguchi, Hiroshi Takahashi, Yoshiyuki Ueno, Hiroyuki Sugaya
  • Publication number: 20140142613
    Abstract: An instrument captures free thrombi by inhibiting blood coagulation reaction at the stage of primary hemostasis, in which platelets are involved, and at the stage of coagulation thrombus formation, in which blood coagulation factors are involved, thereby securely capturing free thrombi and extending the available time of the instrument.
    Type: Application
    Filed: June 21, 2012
    Publication date: May 22, 2014
    Applicants: Toray Industries, Inc.
    Inventors: Kanji Inoue, Hirokazu Sakaguchi, Yuka Sakaguchi, Kazuhiro Tanahashi
  • Publication number: 20140121181
    Abstract: A hydrophobic polymer compound is capable of inhibiting the blood coagulation reactions in both the primary hemostasis stage involving platelets and the coagulation thrombus formation stage involving blood coagulation factors, which hydrophobic polymer compound can be firmly immobilized on the surface of a medical device or medical material in a state where the compound retains its anticoagulant activity. A hydrophobic polymer compound in which a polymer compound inhibiting platelet adhesion is bound with a compound inhibiting blood coagulation reaction.
    Type: Application
    Filed: June 22, 2012
    Publication date: May 1, 2014
    Applicant: TORY INDUSTRIES, INC.
    Inventors: Kazuhiro Tanahashi, Hirokazu Sakaguchi, Yuka Sakaguchi
  • Publication number: 20140113091
    Abstract: A medical material has a compound firmly immobilized on the surface thereof, which compound is capable of inhibiting both of the blood coagulation reactions in a primary hemostasis stage in which platelets are involved and in a coagulation thrombus formation stage in which blood coagulation factors are involved in a state retaining the anticoagulant activity. The present invention provides a medical material having a hydrophilic polymer compound immobilized on the surface thereof, in which a compound and a copolymer of monomers selected from the group consisting of ethylene glycol, vinyl acetate, vinyl pyrrolidone, propylene glycol, vinyl alcohol and siloxane are bound.
    Type: Application
    Filed: June 22, 2012
    Publication date: April 24, 2014
    Applicant: Toray Industries, Inc.
    Inventors: Hirokazu Sakaguchi, Yuka Sakaguchi, Kazuhiro Tanahashi
  • Patent number: 8491125
    Abstract: A lighting device configured to efficiently combine light beams emitted from a plurality of light sources, and to emit high output light while minimizing light loss, and a projection type display apparatus including the lighting device. The lighting device includes: a first light source and a second light source; two converging lenses for converging light beams emitted from the first and second light sources; two right-angle prisms for bending the light beams emitted from the first and second light sources; and a composite rod integrator for combining the light beams emitted from the first and second light sources. Between an exit surface of each right-angle prism and an incident surface of the composite rod integrator, a predetermined air gap is provided. The focal point of each converging lens is located on an incident surface of each right-angle prism.
    Type: Grant
    Filed: March 1, 2011
    Date of Patent: July 23, 2013
    Assignee: Panasonic Corporation
    Inventors: Shigekazu Yamagishi, Hiroki Sugiyama, Hiroshi Kitano, Yoshimasa Fushimi, Hirokazu Sakaguchi
  • Publication number: 20120271010
    Abstract: A hydrophilic polymer compound includes a polymer compound which inhibits platelet adhesion, and a compound that inhibits blood coagulation reaction, bound to the polymer compound.
    Type: Application
    Filed: December 22, 2010
    Publication date: October 25, 2012
    Applicant: TORAY INDUSTRIES, INC.
    Inventors: Hirokazu Sakaguchi, Yuka Sakaguchi, Kazuhiro Tanahashi
  • Patent number: 8249716
    Abstract: A sight regeneration assisting device for regenerating the sight of a patient comprises a plurality of needlelike electrodes each having a pointed distal end and being to be inserted in an optic papilla of a patient's eye in use; and a signal generator connected with the electrodes through a conductive wire to generate an electric stimulus pulse signal to be outputted from the electrodes, each of the electrodes, excepting a predetermined portion including the distal end, being coated with a coating layer made of resin exhibiting good biocompatibility and insulation, and the coating layer being formed with a turn-back retaining portion for retaining the electrode.
    Type: Grant
    Filed: December 27, 2007
    Date of Patent: August 21, 2012
    Assignee: Nidek Co., Ltd.
    Inventors: Yasuo Tano, Hirokazu Sakaguchi, Eiji Yonezawa, Ryoko Tano, legal representative, Ryotaro Tano, legal representative, Kojiro Tano, legal representative, Sayaka Nakajima, legal representative
  • Publication number: 20110261271
    Abstract: A lighting device configured to efficiently combine light beams emitted from a plurality of light sources, and to emit high output light while minimizing light loss, and a projection type display apparatus including the lighting device. The lighting device includes: a first light source and a second light source; two converging lenses for converging light beams emitted from the first and second light sources; two right-angle prisms for bending the light beams emitted from the first and second light sources; and a composite rod integrator for combining the light beams emitted from the first and second light sources. Between an exit surface of each right-angle prism and an incident surface of the composite rod integrator, a predetermined air gap is provided. The focal point of each converging lens is located on an incident surface of each right-angle prism.
    Type: Application
    Filed: March 1, 2011
    Publication date: October 27, 2011
    Applicant: PANASONIC CORPORATION
    Inventors: Shigekazu Yamagishi, Hiroki Sugiyama, Hiroshi Kitano, Yoshimasa Fushimi, Hirokazu Sakaguchi
  • Publication number: 20110222025
    Abstract: A light guiding section guides, to a light incident surface of a rod integrator, a portion of light beams incident on a first light incident surface, and emits another portion of the light beams from a second light incident surface. The light guiding section guides, to the light incident surface of the rod integrator, a portion of light beams incident on the second light incident surface, and emits another portion of the light beams from the first light incident surface. A first light converging section converges light beams which are emitted from the first light incident surface such that a converged light is incident on the first light incident surface. A second light converging section converges light beams which are emitted from the second light incident surface such that a converged light is incident on the second light incident surface.
    Type: Application
    Filed: February 28, 2011
    Publication date: September 15, 2011
    Applicant: PANASONIC CORPORATION
    Inventor: Hirokazu SAKAGUCHI
  • Publication number: 20110202109
    Abstract: A vision regeneration assisting apparatus for regenerating a patient's vision, includes: a housing; a plurality of needle-like electrodes that are formed at the housing and extend from the housing to a predetermined length, the electrodes being configured to stick into an optic papilla of a patient's eye; and a needle-like fixing portion that is formed at the housing, is separated from the electrodes, is formed so that the fixing portion extends from the housing in the same direction in which the electrodes extend, and is configured to maintain a state where the electrodes are stuck in the optic papilla.
    Type: Application
    Filed: February 15, 2011
    Publication date: August 18, 2011
    Applicant: NIDEK CO., LTD.
    Inventors: Motohiro KAMEI, Hirokazu SAKAGUCHI, Yasuo TERASAWA, Masayuki SHINOMIYA
  • Patent number: 7974699
    Abstract: A vision regeneration assisting device for regenerating vision of a patient, comprising: a plurality of electrodes which are stuck and placed into an optic disc of the patient; a storage unit which stores a generation position of a phosphene specific to the patient in association with the first output conditions for the stimulation signal that has caused to generate the phosphene, the storage unit storing various first output conditions for the stimulation signals and the generation positions of the phosphenes caused by the stimulation signals based on the various first output conditions in association with each other; a processor which sets second output conditions for the stimulation signal based on image data obtained by an external photography unit and the generation positions of the phosphenes stored in the storage unit, and converts the obtained image data into data for the stimulation signal based on the set second output conditions.
    Type: Grant
    Filed: March 23, 2007
    Date of Patent: July 5, 2011
    Assignee: Nidek Co., Ltd.
    Inventors: Yasuo Tano, Hirokazu Sakaguchi, Eiji Yonezawa, Hiroyuki Kanda
  • Publication number: 20100222842
    Abstract: A sight regeneration assisting device for regenerating the sight of a patient comprises a plurality of needlelike electrodes each having a pointed distal end and being to be inserted in an optic papilla of a patient's eye in use; and a signal generator connected with the electrodes through a conductive wire to generate an electric stimulus pulse signal to be outputted from the electrodes, each of the electrodes, excepting a predetermined portion including the distal end, being coated with a coating layer made of resin exhibiting good biocompatibility and insulation, and the coating layer being formed with a turn-back retaining portion for retaining the electrode.
    Type: Application
    Filed: December 27, 2007
    Publication date: September 2, 2010
    Applicant: Nidek Co., Ltd.
    Inventors: Yasuo Tano, Ryoko Tano, Ryotaro Tano, Kojiro Tano, Sayaka Nakajima, Hirokazu Sakaguchi, Eiji Yonezawa
  • Publication number: 20100176048
    Abstract: The present invention relates to a substrate including a compound having blood anticoagulation activity and a hydrophilic polymer compound, wherein the amount of elution of the compound having blood anticoagulation activity is less than 0.6 ?g/ml, and a manufacturing method of a substrate, wherein after a compound having blood anticoagulation activity and a hydrophilic compound brought in contact with a substrate are irradiated with radiation, unreacted components are washed out.
    Type: Application
    Filed: September 13, 2007
    Publication date: July 15, 2010
    Inventors: Hirokazu Sakaguchi, Hiroshi Takahashi, Yoshiyuki Ueno, Hiroyuki Sugaya
  • Publication number: 20080183242
    Abstract: A method for improving visual ability of even a patient's non-operative eye is provided. The electrical stimulation method for improving vision of patient's eyes comprises placing an electrode in one of patient's right and left eyes, and outputting an electrical stimulation pulse signal from the electrode placed in the patient's eye under a predetermined stimulation condition to stimulate cells constituting a retina or optic nerve, thereby improving vision of the other patient's eye with no electrode being placed.
    Type: Application
    Filed: January 29, 2007
    Publication date: July 31, 2008
    Applicant: NIDEK CO., LTD.
    Inventors: Yasuo Tano, Hirokazu Sakaguchi, Hugo Quiroz Mercado, Eiji Yonezawa, Hiroyuki Kanda
  • Publication number: 20070225775
    Abstract: A vision regeneration assisting device for regenerating vision of a patient, comprising: a plurality of electrodes which are stuck and placed into an optic disc of the patient; a setting unit with which first output conditions for an electrical stimulation pulse signal from at least one of the electrodes are set variably; a storage unit which stores a generation position of a phosphene specific to the patient in association with the first output conditions for the stimulation signal that has caused to generate the phosphene, the storage unit storing various first output conditions for the stimulation signals and the generation positions of the phosphenes caused by the stimulation signals based on the various first output conditions in association with each other; a processor which sets second output conditions for the stimulation signal based on image data obtained by an external photography unit and the generation positions of the phosphenes stored in the storage unit, and converts the obtained image data in
    Type: Application
    Filed: March 23, 2007
    Publication date: September 27, 2007
    Applicant: NIDEK CO.,LTD.
    Inventors: Yasuo Tano, Hirokazu Sakaguchi, Eiji Yonezawa, Hiroyuki Kanda
  • Patent number: 7004604
    Abstract: A projection display device includes a condensing unit and a shading unit. The condensing unit condenses light emitted from a light source to form a condensed spot on a color wheel. The shading unit, when a size of the condensed spot on the color wheel has increased due to an increase in light emission of the light source, shades a portion of the light passing through the color wheel corresponding to the increased size.
    Type: Grant
    Filed: November 13, 2003
    Date of Patent: February 28, 2006
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Hideki Ohmae, Mitsuhiro Wada, Kazunori Tanabe, Shigeru Aruga, Hirokazu Sakaguchi, Hisatoshi Shimose
  • Patent number: 6755554
    Abstract: A field sequential color display device includes a color wheel assembly. The color wheel assembly has a color wheel which is divided into a plurality of color regions and a motor for rotating the color wheel. The motor contains a sensor for detecting rotation of the motor and the sensor outputs at least one pulse per one revolution of the motor. The color wheel assembly also has a spatial light modulator for displaying image data that is driving in synchronization with the pulse output by the sensor.
    Type: Grant
    Filed: May 25, 2001
    Date of Patent: June 29, 2004
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Hideki Ohmae, Mitsuhiro Wada, Kazunori Tanabe, Shigeru Aruga, Hirokazu Sakaguchi, Hisatoshi Shimose
  • Publication number: 20040095767
    Abstract: A field sequential color display device includes a color wheel assembly. The color wheel assembly has a color wheel which is divided into a plurality of color regions and a motor for rotating the color wheel. The motor contains a sensor for detecting rotation of the motor and the sensor outputs at least one pulse per one revolution of the motor. The color wheel assembly also has a spatial light modulator for displaying image data that is driving in synchronization with the pulse output by the sensor.
    Type: Application
    Filed: November 13, 2003
    Publication date: May 20, 2004
    Inventors: Hideki Ohmae, Mitsuhiro Wada, Kazunori Tanabe, Shigeru Aruga, Hirokazu Sakaguchi, Hisatoshi Shimose
  • Patent number: 6425672
    Abstract: A reflecting film is made by forming resin layers on both sides of a metal thin film, and using a colorless, transparent, and optically isotropic material at least in one resin layer. A reflecting film is made by forming a metal thin film on one side of a resin film, and forming a colorless, transparent, and optically isotropic resin coat layer on its surface by printing or other method. A mirror having such a reflecting film is mounted on a frame. A projection type image magnifying apparatus for liquid crystal panel and a projection type image magnifying apparatus for CRT, improved in resolution and contrast ratio, is obtained by using such mirror as an image reflecting mirror.
    Type: Grant
    Filed: June 29, 2001
    Date of Patent: July 30, 2002
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Takehiko Yamashita, Katsuaki Mitani, Hirokazu Sakaguchi