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).
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Publication number: 20140256783Abstract: 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: ApplicationFiled: May 16, 2014Publication date: September 11, 2014Applicant: Toray Industries, Inc.Inventors: Hirokazu SAKAGUCHI, Hiroshi TAKAHASHI, Yoshiyuki UENO, Hiroyuki SUGAYA
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Patent number: 8733557Abstract: 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: GrantFiled: September 13, 2007Date of Patent: May 27, 2014Assignee: TORAY Industries, Inc.Inventors: Hirokazu Sakaguchi, Hiroshi Takahashi, Yoshiyuki Ueno, Hiroyuki Sugaya
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Publication number: 20140142613Abstract: 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: ApplicationFiled: June 21, 2012Publication date: May 22, 2014Applicants: Toray Industries, Inc.Inventors: Kanji Inoue, Hirokazu Sakaguchi, Yuka Sakaguchi, Kazuhiro Tanahashi
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Publication number: 20140121181Abstract: 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: ApplicationFiled: June 22, 2012Publication date: May 1, 2014Applicant: TORY INDUSTRIES, INC.Inventors: Kazuhiro Tanahashi, Hirokazu Sakaguchi, Yuka Sakaguchi
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Publication number: 20140113091Abstract: 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: ApplicationFiled: June 22, 2012Publication date: April 24, 2014Applicant: Toray Industries, Inc.Inventors: Hirokazu Sakaguchi, Yuka Sakaguchi, Kazuhiro Tanahashi
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Patent number: 8491125Abstract: 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: GrantFiled: March 1, 2011Date of Patent: July 23, 2013Assignee: Panasonic CorporationInventors: Shigekazu Yamagishi, Hiroki Sugiyama, Hiroshi Kitano, Yoshimasa Fushimi, Hirokazu Sakaguchi
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Publication number: 20120271010Abstract: 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: ApplicationFiled: December 22, 2010Publication date: October 25, 2012Applicant: TORAY INDUSTRIES, INC.Inventors: Hirokazu Sakaguchi, Yuka Sakaguchi, Kazuhiro Tanahashi
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Patent number: 8249716Abstract: 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: GrantFiled: December 27, 2007Date of Patent: August 21, 2012Assignee: 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
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Publication number: 20110261271Abstract: 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: ApplicationFiled: March 1, 2011Publication date: October 27, 2011Applicant: PANASONIC CORPORATIONInventors: Shigekazu Yamagishi, Hiroki Sugiyama, Hiroshi Kitano, Yoshimasa Fushimi, Hirokazu Sakaguchi
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Publication number: 20110222025Abstract: 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: ApplicationFiled: February 28, 2011Publication date: September 15, 2011Applicant: PANASONIC CORPORATIONInventor: Hirokazu SAKAGUCHI
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Publication number: 20110202109Abstract: 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: ApplicationFiled: February 15, 2011Publication date: August 18, 2011Applicant: NIDEK CO., LTD.Inventors: Motohiro KAMEI, Hirokazu SAKAGUCHI, Yasuo TERASAWA, Masayuki SHINOMIYA
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Patent number: 7974699Abstract: 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: GrantFiled: March 23, 2007Date of Patent: July 5, 2011Assignee: Nidek Co., Ltd.Inventors: Yasuo Tano, Hirokazu Sakaguchi, Eiji Yonezawa, Hiroyuki Kanda
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Publication number: 20100222842Abstract: 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: ApplicationFiled: December 27, 2007Publication date: September 2, 2010Applicant: Nidek Co., Ltd.Inventors: Yasuo Tano, Ryoko Tano, Ryotaro Tano, Kojiro Tano, Sayaka Nakajima, Hirokazu Sakaguchi, Eiji Yonezawa
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Publication number: 20100176048Abstract: 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: ApplicationFiled: September 13, 2007Publication date: July 15, 2010Inventors: Hirokazu Sakaguchi, Hiroshi Takahashi, Yoshiyuki Ueno, Hiroyuki Sugaya
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Publication number: 20080183242Abstract: 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: ApplicationFiled: January 29, 2007Publication date: July 31, 2008Applicant: NIDEK CO., LTD.Inventors: Yasuo Tano, Hirokazu Sakaguchi, Hugo Quiroz Mercado, Eiji Yonezawa, Hiroyuki Kanda
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Publication number: 20070225775Abstract: 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 inType: ApplicationFiled: March 23, 2007Publication date: September 27, 2007Applicant: NIDEK CO.,LTD.Inventors: Yasuo Tano, Hirokazu Sakaguchi, Eiji Yonezawa, Hiroyuki Kanda
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Patent number: 7004604Abstract: 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: GrantFiled: November 13, 2003Date of Patent: February 28, 2006Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Hideki Ohmae, Mitsuhiro Wada, Kazunori Tanabe, Shigeru Aruga, Hirokazu Sakaguchi, Hisatoshi Shimose
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Patent number: 6755554Abstract: 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: GrantFiled: May 25, 2001Date of Patent: June 29, 2004Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Hideki Ohmae, Mitsuhiro Wada, Kazunori Tanabe, Shigeru Aruga, Hirokazu Sakaguchi, Hisatoshi Shimose
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Publication number: 20040095767Abstract: 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: ApplicationFiled: November 13, 2003Publication date: May 20, 2004Inventors: Hideki Ohmae, Mitsuhiro Wada, Kazunori Tanabe, Shigeru Aruga, Hirokazu Sakaguchi, Hisatoshi Shimose
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Patent number: 6425672Abstract: 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: GrantFiled: June 29, 2001Date of Patent: July 30, 2002Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Takehiko Yamashita, Katsuaki Mitani, Hirokazu Sakaguchi