Patents by Inventor Kazuhisa Karaki
Kazuhisa Karaki 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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Patent number: 10492667Abstract: In an optical fiber scanning apparatus, an optical fiber to which a permanent magnet is disposed and which is configured to emit illumination light from a distal end portion is arranged in a hollow portion where a magnetic field generation unit is disposed of a frame body, the frame body for which a cross section of the hollow portion is a square includes a first frame body for which planar coils are disposed respectively on a first surface and a second surface that are orthogonal to each other, and a second frame body for which planar coils are disposed respectively on a third surface and a fourth surface that are orthogonal to each other, and which is bonded with the first frame body, and the first surface to the fourth surface configure inner surfaces of the hollow portion.Type: GrantFiled: November 2, 2016Date of Patent: December 3, 2019Assignee: OLYMPUS CORPORATIONInventors: Kazuhisa Karaki, Mamoru Hasegawa, Hiroya Fukuyama
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Patent number: 10016121Abstract: An ultrasound transducer element includes a plurality of electrostatic capacitance type ultrasound cells each having a lower electrode portion and a membrane including an upper electrode portion that are oriented and disposed via a cavity circular in plan view, and a thickness of the cavity monotonously decreases in a curved manner toward an outer circumferential portion from a center portion of the cavity.Type: GrantFiled: April 30, 2014Date of Patent: July 10, 2018Assignee: OLYMPUS CORPORATIONInventors: Kazuya Matsumoto, Kazuhisa Karaki, Mamoru Hasegawa, Katsuhiro Wakabayashi
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Patent number: 9636710Abstract: An ultrasound element includes a silicon substrate, a lower electrode layer that has a plurality of lower electrode sections, and a plurality of lower wiring sections, and is connected to a lower electrode terminal to which a drive signal and a bias signal are applied, a lower insulating layer, an upper insulating layer in which a plurality of cavities smaller than the respective lower electrode sections are formed, an upper electrode layer that has a plurality of upper electrode sections that are disposed to face the respective lower electrode sections via the respective cavities, and are smaller than the lower electrode sections and larger than the cavities, and a plurality of upper wiring sections, and is connected to an upper electrode terminal at a ground potential that detects a capacitance signal, and a protection layer.Type: GrantFiled: January 10, 2014Date of Patent: May 2, 2017Assignee: OLYMPUS CORPORATIONInventors: Kazuya Matsumoto, Kazuhisa Karaki, Mamoru Hasegawa, Katsuhiro Wakabayashi
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Patent number: 9629609Abstract: A US element includes a silicon substrate, wherein a lower electrode layer that has a plurality of lower electrode sections, and a plurality of lower wiring sections, and is connected to a lower electrode terminal to which a drive signal and a bias signal are applied, a lower insulating layer, an upper insulating layer in which a plurality of cavities are formed, an upper electrode layer that has a plurality of upper electrode sections and a plurality of upper wiring sections, and is connected to an upper electrode terminal at a ground potential for detecting a capacitance signal, and a protection layer are sequentially stacked on the silicon substrate, and the US element further includes a shield electrode section that is formed at least at an upper side of the lower wiring sections, and is connected to a shield electrode terminal at a ground potential.Type: GrantFiled: January 8, 2014Date of Patent: April 25, 2017Assignee: OLYMPUS CORPORATIONInventors: Kazuya Matsumoto, Kazuhisa Karaki, Mamoru Hasegawa, Katsuhiro Wakabayashi
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Publication number: 20170049304Abstract: In an optical fiber scanning apparatus, an optical fiber to which a permanent magnet is disposed and which is configured to emit illumination light from a distal end portion is arranged in a hollow portion where a magnetic field generation unit is disposed of a frame body, the frame body for which a cross section of the hollow portion is a square includes a first frame body for which planar coils are disposed respectively on a first surface and a second surface that are orthogonal to each other, and a second frame body for which planar coils are disposed respectively on a third surface and a fourth surface that are orthogonal to each other, and which is bonded with the first frame body, and the first surface to the fourth surface configure inner surfaces of the hollow portion.Type: ApplicationFiled: November 2, 2016Publication date: February 23, 2017Applicant: OLYMPUS CORPORATIONInventors: Kazuhisa KARAKI, Mamoru HASEGAWA, Hiroya FUKUYAMA
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Publication number: 20140236018Abstract: An ultrasound transducer element includes a plurality of electrostatic capacitance type ultrasound cells each having a lower electrode portion and a membrane including an upper electrode portion that are oriented and disposed via a cavity circular in plan view, and a thickness of the cavity monotonously decreases in a curved manner toward an outer circumferential portion from a center portion of the cavity.Type: ApplicationFiled: April 30, 2014Publication date: August 21, 2014Applicants: OLYMPUS CORPORATION, OLYMPUS MEDICAL SYSTEMS CORP.Inventors: Kazuya MATSUMOTO, Kazuhisa KARAKI, Mamoru HASEGAWA, Katsuhiro WAKABAYASHI
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Patent number: 8767513Abstract: An ultrasound transducer array according to an embodiment includes a substrate, a plurality of groove-like recesses arranged at a predetermined interval on one surface of the substrate, a cell region arranged between the recesses on the one surface side of the substrate, a flexible film configured to cover the substrate and the cell region and having fragility lower than fragility of the substrate, and a dividing groove having a width smaller than a width of the recess and reaching from the other surface of the substrate to the flexible film in the recess.Type: GrantFiled: May 6, 2013Date of Patent: July 1, 2014Assignees: Olympus Medical Systems Corp., Olympus CorporationInventors: Satoshi Yoshida, Katsuhiro Wakabayashi, Jin Hiraoka, Kazuya Matsumoto, Mamoru Hasegawa, Kazuhisa Karaki
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Publication number: 20140128741Abstract: An ultrasound element includes a silicon substrate, a lower electrode layer that has a plurality of lower electrode sections, and a plurality of lower wiring sections, and is connected to a lower electrode terminal to which a drive signal and a bias signal are applied, a lower insulating layer, an upper insulating layer in which a plurality of cavities smaller than the respective lower electrode sections are formed, an upper electrode layer that has a plurality of upper electrode sections that are disposed to face the respective lower electrode sections via the respective cavities, and are smaller than the lower electrode sections and larger than the cavities, and a plurality of upper wiring sections, and is connected to an upper electrode terminal at a ground potential that detects a capacitance signal, and a protection layer.Type: ApplicationFiled: January 10, 2014Publication date: May 8, 2014Applicants: OLYMPUS CORPORATION, OLYMPUS MEDICAL SYSTEMS CORP.Inventors: Kazuya MATSUMOTO, Kazuhisa KARAKI, Mamoru HASEGAWA, Katsuhiro WAKABAYASHI
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Publication number: 20140121526Abstract: A US element includes a silicon substrate, wherein a lower electrode layer that has a plurality of lower electrode sections, and a plurality of lower wiring sections, and is connected to a lower electrode terminal to which a drive signal and a bias signal are applied, a lower insulating layer, an upper insulating layer in which a plurality of cavities are formed, an upper electrode layer that has a plurality of upper electrode sections and a plurality of upper wiring sections, and is connected to an upper electrode terminal at a ground potential for detecting a capacitance signal, and a protection layer are sequentially stacked on the silicon substrate, and the US element further includes a shield electrode section that is formed at least at an upper side of the lower wiring sections, and is connected to a shield electrode terminal at a ground potential.Type: ApplicationFiled: January 8, 2014Publication date: May 1, 2014Applicants: OLYMPUS CORPORATION, OLYMPUS MEDICAL SYSTEMS CORP.Inventors: Kazuya MATSUMOTO, Kazuhisa KARAKI, Mamoru HASEGAWA, Katsuhiro WAKABAYASHI
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Publication number: 20130286786Abstract: An ultrasound transducer array according to an embodiment includes a substrate, a plurality of groove-like recesses arranged at a predetermined interval on one surface of the substrate, a cell region arranged between the recesses on the one surface side of the substrate, a flexible film configured to cover the substrate and the cell region and having fragility lower than fragility of the substrate, and a dividing groove having a width smaller than a width of the recess and reaching from the other surface of the substrate to the flexible film in the recess.Type: ApplicationFiled: May 6, 2013Publication date: October 31, 2013Inventors: Satoshi YOSHIDA, Katsuhiro WAKABAYASHI, Jin HIRAOKA, Kazuya MATSUMOTO, Mamoru HASEGAWA, Kazuhisa KARAKI
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Patent number: 8512251Abstract: An ultrasound transducer includes a substrate and a lower electrode layer, a lower insulating layer, an upper insulating layer, and an upper electrode layer. The lower insulating layer and the upper insulating layer are arranged to be opposed to each other via an air gap section. The upper insulating layer and the lower insulating layer are different in a material and thickness and satisfy Equation 1 below. In Equation 1, K1 represents a relative dielectric constant of the lower insulating layer, K2 represents a relative dielectric constant of the upper insulating layer, T1 represents thickness of the lower insulating layer, T2 represents thickness of the upper insulating layer, ?1(x) represents a charge density distribution in the lower insulating layer, and ?2(y) represents a charge density distribution in the upper insulating layer.Type: GrantFiled: September 13, 2012Date of Patent: August 20, 2013Assignees: Olympus Medical Systems Corp., Olympus CorporationInventors: Kazuya Matsumoto, Katsuhiro Wakabayashi, Jin Hiraoka, Kazuhisa Karaki, Mamoru Hasegawa, Satoshi Yoshida
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Publication number: 20130018269Abstract: An ultrasound transducer includes a substrate and a lower electrode layer, a lower insulating layer, an upper insulating layer, and an upper electrode layer. The lower insulating layer and the upper insulating layer are arranged to be opposed to each other via an air gap section. The upper insulating layer and the lower insulating layer are different in a material and thickness and satisfy Equation 1 below. In Equation 1, K1 represents a relative dielectric constant of the lower insulating layer, K2 represents a relative dielectric constant of the upper insulating layer, T1 represents thickness of the lower insulating layer, T2 represents thickness of the upper insulating layer, ?1(x) represents a charge density distribution in the lower insulating layer, and ?2(y) represents a charge density distribution in the upper insulating layer.Type: ApplicationFiled: September 13, 2012Publication date: January 17, 2013Applicants: OLYMPUS CORPORATION, OLYMPUS MEDICAL SYSTEMS CORP.Inventors: Kazuya MATSUMOTO, Katsuhiro WAKABAYASHI, Jin HIRAOKA, Kazuhisa KARAKI, Mamoru HASEGAWA, Satoshi YOSHIDA
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Patent number: 8047995Abstract: A ultrasonic transducer of the invention comprises: a transducer cell including a first electrode and a second electrode disposed separated from the first electrode by an air gap portion; and an electret for applying a potential difference between the first electrode and the second electrode. The electret is disposed in a region where at least a part thereof does not overlap with the transducer cell when viewed from a transmitting direction of ultrasonic waves.Type: GrantFiled: August 25, 2008Date of Patent: November 1, 2011Assignees: Olympus Medical Systems Corp., Olympus CorporationInventors: Katsuhiro Wakabayashi, Hideo Adachi, Mamoru Hasegawa, Kazuya Matsumoto, Kazuhisa Karaki, Yoshitaka Kamiya
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Patent number: 8026651Abstract: An ultrasound transducer includes a substrate, an ultrasound transducer cell placed on one surface of the substrate and having a lower electrode, a first gap portion placed on the lower electrode and an upper electrode placed on the first gap portion, a first conductive layer placed on the other surface of the substrate and electrically connected to one of the lower electrode and the upper electrode, an electret film placed on the first conductive layer, an insulating layer placed on the electret film, and a second conductive layer placed on the insulating layer and electrically connected to the one of the lower electrode and the upper electrode not electrically connected to the first conductive layer.Type: GrantFiled: April 15, 2009Date of Patent: September 27, 2011Assignee: Olympus Medical Systems Corp.Inventors: Katsuhiro Wakabayashi, Hideo Adachi, Kazuya Matsumoto, Mamoru Hasegawa, Kazuhisa Karaki, Yoshitaka Kamiya
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Publication number: 20090262605Abstract: An ultrasound transducer includes a substrate, an ultrasound transducer cell placed on one surface of the substrate and having a lower electrode, a first gap portion placed on the lower electrode and an upper electrode placed on the first gap portion, a first conductive layer placed on the other surface of the substrate and electrically connected to one of the lower electrode and the upper electrode, an electret film placed on the first conductive layer, an insulating layer placed on the electret film, and a second conductive layer placed on the insulating layer and electrically connected to the one of the lower electrode and the upper electrode not electrically connected to the first conductive layer.Type: ApplicationFiled: April 15, 2009Publication date: October 22, 2009Applicant: OLYMPUS MEDICAL SYSTEMS CORP.Inventors: Katsuhiro WAKABAYASHI, Hideo ADACHI, Kazuya MATSUMOTO, Mamoru HASEGAWA, Kazuhisa KARAKI, Yoshitaka KAMIYA
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Publication number: 20090058228Abstract: A ultrasonic transducer of the invention comprises: a transducer cell including a first electrode and a second electrode disposed separated from the first electrode by an air gap portion; and an electret for applying a potential difference between the first electrode and the second electrode. The electret is disposed in a region where at least a part thereof does not overlap with the transducer cell when viewed from a transmitting direction of ultrasonic waves.Type: ApplicationFiled: August 25, 2008Publication date: March 5, 2009Applicant: OLYMPUS MEDICAL SYSTEMS CORP.Inventors: Katsuhiro WAKABAYASHI, Hideo ADACHI, Mamoru HASEGAWA, Kazuya MATSUMOTO, Kazuhisa KARAKI, Yoshitaka KAMIYA
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Patent number: 5562945Abstract: A method for post-cleaning finish drying is provided, by which finish drying of industrial parts can be conducted without leaving residues or corroding the cleaned material. In this method, finish drying can be performed without the use of freon being a cause of destruction of the ozonosphere. Preferably, a cleaned material is dipped (rinsed) in a low molecular weight siloxane having a content of organic compounds, such as dodecamethylpentasiloxane, of less than 0.01% by weight, taken out and dried. Also, preferably, the material rinsed with the low molecular weight siloxane is subjected to a vapor cleaning using a perfluorocarbon compound.Type: GrantFiled: April 29, 1994Date of Patent: October 8, 1996Assignee: Olympus Optical Co., Ltd.Inventors: Masamichi Hijino, Michio Shirai, Kazuhisa Karaki