Patents by Inventor Katsuhiko Tokuda
Katsuhiko Tokuda 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: 20230272598Abstract: A work vehicle includes: an engine; a hydraulic pump that is driven by the engine; hydraulic cylinders that are extended and contracted by pressurized fluid delivered from the hydraulic pump; a work device that is moved according to the extension/contraction operations of the hydraulic cylinders; a travel device that is driven independently of the work device; an electrically driven motor that is driven by electric power generated by the engine to operate the travel device; and a controller that controls the hydraulic cylinders and the electrically driven motor. The controller controls the output power of the hydraulic pump and the output power of the electrically driven motor by changing the distribution ratios of a first torque consumed by the work device and a second torque consumed by the travel device among torques output by the engine, on the basis of a reaction force received by the vehicle body.Type: ApplicationFiled: August 2, 2021Publication date: August 31, 2023Inventors: Masatoshi YOSHIMURA, Hiroyuki KOBAYASHI, Satoru KANEKO, Noritaka ITOU, Satoshi SEKINO, Katsuhiko TOKUDA
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Patent number: 11043790Abstract: A light emitting device includes a substrate; a semiconductor light emitting element provided on the substrate; a mirror that is formed on the substrate and reflects light emitted by the semiconductor light emitting element; a first resin disposed apart from the semiconductor light emitting element on an optical path and containing a light diffusing material; and a second resin disposed on the optical path between the semiconductor light emitting element and the low light diffusion portion and covering a light emitting surface of the semiconductor light emitting element at least in a region in which a density of the light is highest. A concentration of a light diffusing material in the second resin is lower than a concentration of the light diffusing material in the first resin.Type: GrantFiled: February 27, 2017Date of Patent: June 22, 2021Assignee: SHARP KABUSHIKI KAISHAInventor: Katsuhiko Tokuda
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Publication number: 20200328570Abstract: A light emitting device includes a substrate; a semiconductor light emitting element provided on the substrate; a mirror that is formed on the substrate and reflects light emitted by the semiconductor light emitting element; a first resin disposed apart from the semiconductor light emitting element on an optical path and containing a light diffusing material; and a second resin disposed on the optical path between the semiconductor light emitting element and the low light diffusion portion and covering a light emitting surface of the semiconductor light emitting element at least in a region in which a density of the light is highest. A concentration of a light diffusing material in the second resin is lower than a concentration of the light diffusing material in the first resin.Type: ApplicationFiled: February 27, 2017Publication date: October 15, 2020Inventor: KATSUHIKO TOKUDA
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Patent number: 9599876Abstract: A periodic polarization reversal electrode, periodic polarization reversal structure forming method and periodic polarization reversal element. The element includes a plurality of stripe electrode sections with a stripe shape extending in parallel at a gap from each other, arranged in contact with the +Z surface of a ferroelectric crystal substrate; an insulation film arranged over the +Z surface so as to cover the plurality of stripe electrode sections; and an equipotential electrode section which has a portion that opposes at least a part of each of the plurality of stripe electrode sections across the insulation film and is arranged over the insulation film without contacting the ferroelectric crystal substrate or the plurality of stripe electrode sections, wherein an electric field is generated in the area of the ferroelectric crystal substrate directly below the plurality of stripe electrode sections by applying a voltage to the equipotential electrode section.Type: GrantFiled: January 13, 2015Date of Patent: March 21, 2017Assignee: SHIMADZU CORPORATIONInventors: Kazuya Inoue, Katsuhiko Tokuda, Mamoru Hisamitsu, Kazutomo Kadokura
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Publication number: 20160202595Abstract: A periodic polarization reversal electrode, periodic polarization reversal structure forming method and periodic polarization reversal element. The element includes a plurality of stripe electrode sections with a stripe shape extending in parallel at a gap from each other, arranged in contact with the +Z surface of a ferroelectric crystal substrate; an insulation film arranged over the +Z surface so as to cover the plurality of stripe electrode sections; and an equipotential electrode section which has a portion that opposes at least a part of each of the plurality of stripe electrode sections across the insulation film and is arranged over the insulation film without contacting the ferroelectric crystal substrate or the plurality of stripe electrode sections, wherein an electric field is generated in the area of the ferroelectric crystal substrate directly below the plurality of stripe electrode sections by applying a voltage to the equipotential electrode section.Type: ApplicationFiled: January 13, 2015Publication date: July 14, 2016Applicant: SHIMADZU CORPORATIONInventors: Kazuya INOUE, Katsuhiko TOKUDA, Mamoru HISAMITSU, Kazutomo KADOKURA
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Patent number: 9025626Abstract: A semiconductor laser excited solid state laser device and method. The device including a semiconductor laser; a driving device; a solid state laser module which has maximum output efficiency at the set temperature and which generates, from excitation light, an output light of a predetermined output level when the optical noise is at or below a fixed level and the output level of the excitation light is the set output level; a single temperature adjustment device which adjusts the temperature of the semiconductor laser and the temperature of the solid state laser module; and a control device which controls the driving device such that the output light will be at the predetermined output level and controls the temperature adjustment device such that the temperature of the semiconductor laser and the solid state laser module will be the set temperature.Type: GrantFiled: September 19, 2013Date of Patent: May 5, 2015Assignee: Shimadzu CorporationInventors: Kazutomo Kadokura, Katsuhiko Tokuda, Mamoru Hisamitsu, Kazuya Inoue
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Patent number: 8999087Abstract: The outer shape of a surface to be bonded of a first optical crystal member is formed as a shape in which the length in a direction parallel to an optical axis of the first optical crystal member differs from the length in a direction perpendicular to the optical axis of the first optical crystal member. The outer shape of a surface to be bonded of a second optical crystal member is formed as a shape coinciding with the outer shape of the surface to be bonded of the first optical crystal member or a shape obtained by enlarging or reducing the coinciding shape in an orientation in which an optical axis of the second optical crystal member and the optical axis of the first optical crystal member are adjusted to a prescribed angle.Type: GrantFiled: March 15, 2013Date of Patent: April 7, 2015Assignee: Shimadzu CorporationInventors: Kazutomo Kadokura, Katsuhiko Tokuda, Mamoru Hisamitsu, Kazuya Inoue
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Publication number: 20150078407Abstract: A semiconductor laser excited solid state laser device and method. The device including a semiconductor laser; a driving device; a solid state laser module which has maximum output efficiency at the set temperature and which generates, from excitation light, an output light of a predetermined output level when the optical noise is at or below a fixed level and the output level of the excitation light is the set output level; a single temperature adjustment device which adjusts the temperature of the semiconductor laser and the temperature of the solid state laser module; and a control device which controls the driving device such that the output light will be at the predetermined output level and controls the temperature adjustment device such that the temperature of the semiconductor laser and the solid state laser module will be the set temperature.Type: ApplicationFiled: September 19, 2013Publication date: March 19, 2015Applicant: SHIMADZU CORPORATIONInventors: Kazutomo KADOKURA, Katsuhiko TOKUDA, Mamoru HISAMITSU, Kazuya INOUE
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Publication number: 20140261955Abstract: The outer shape of a surface to be bonded of a first optical crystal member is formed as a shape in which the length in a direction parallel to an optical axis of the first optical crystal member differs from the length in a direction perpendicular to the optical axis of the first optical crystal member. The outer shape of a surface to be bonded of a second optical crystal member is formed as a shape coinciding with the outer shape of the surface to be bonded of the first optical crystal member or a shape obtained by enlarging or reducing the coinciding shape in an orientation in which an optical axis of the second optical crystal member and the optical axis of the first optical crystal member are adjusted to a prescribed angle.Type: ApplicationFiled: March 15, 2013Publication date: September 18, 2014Inventors: Kazutomo KADOKURA, Katsuhiko TOKUDA, Mamoru HISAMITSU, Kazuya INOUE
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Patent number: 7392073Abstract: Terminal equipment has mounted thereon a wireless module including a communication device having a transmission and reception antenna for connection to a wireless network and includes a first antenna unit which is connected to the transmission and reception antenna physically or spatially and a second antenna unit which is connected to the first antenna unit and transmits and receives radio signals directly to and from the wireless network such that not only communication quality is upgraded, but a radio signal reach distance between the terminal equipment and the wireless network is extended.Type: GrantFiled: September 29, 2003Date of Patent: June 24, 2008Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Yukiro Kashima, Katsuhiko Tokuda
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Publication number: 20060009263Abstract: A terminal equipment is used by mounting thereon a wireless module including a communication device having a transmission and reception antenna for connection to a wireless network and includes a first antenna unit which is connected to the transmission and reception antenna physically or spatially and a second antenna unit which is connected to the first antenna unit and transmits and receives radio signals directly to and from the wireless network such that not only communication quality is upgraded but a radio signal reach distance between the terminal equipment and the wireless network is extended.Type: ApplicationFiled: September 29, 2003Publication date: January 12, 2006Inventors: Yukiro Kashima, Katsuhiko Tokuda
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Patent number: 6483475Abstract: A multi-beam antenna includes a parabolic reflector, a block-down-converter, a support arm and a holding member. The block-down-converter is arranged such that a multi-primary radiator and a housing containing a conversion circuit are integrally molded. The multiprimary radiator is constituted by a plurality of primary radiators having apertures whose central points are arranged linearly. Neighboring two of the primary radiators are integrally joined with each other at a joint part. A polarization angle can be adjusted simply by a function that an angle formed between the block-down-converter and the support arm can be varied about a perpendicular radiation axis by the holding member. A feeding element pair formed on the conversion circuit is constituted by two feeding elements extending orthogonally to each other. Angles formed between the feeding elements and a central line of the joint part are determined on the basis of a center of a longitudinal range of a receiving area.Type: GrantFiled: September 8, 2000Date of Patent: November 19, 2002Assignee: Matsushita Electric Industrial Co., Ltd.Inventor: Katsuhiko Tokuda
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Patent number: 6330927Abstract: A tire slip control device comprises: an engine; a torque converter connected to an output shaft of the engine; a transmission for transmitting a traveling driving force from the torque converter to an axle; an engine rotation detector; an output rotation detector for the transmission; and a control for restricting the traveling driving force, wherein the control for restricting the traveling driving force judges that slip has occurred and restricts the traveling driving force when a rate of change of the ratio of an output speed of the transmission to an engine speed per unit time exceeds a first predetermined value in an initial condition in which the output speed of the transmission is a second predetermined value or smaller in a high-speed rotation area of a predetermined engine speed or larger.Type: GrantFiled: August 7, 2000Date of Patent: December 18, 2001Assignee: Kawasaki Jukogyo Kabushiki KaishaInventor: Katsuhiko Tokuda
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Patent number: 5937509Abstract: A linear-circular polarizer used for the transmission in the microwave band, which provides excellent impedance characteristics and stabilized cross polarization characteristics by having 1/4 wavelength phase plates and the inner surface of a circular waveguide made in one-piece for the purpose of cost and production step reduction. The linear-circular polarizer includes a pair of 1/4 wavelength phase plates of a specified width and height formed opposite to each other and symmetric with respect to the waveguides central axis. The 1/4 wavelength phase plates are formed on the inner surface of a circular waveguide at a closed end opposite to an end where a primary radiator is located.Type: GrantFiled: April 23, 1997Date of Patent: August 17, 1999Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Katsuhiko Tokuda, Yoshikazu Yoshimura, Tatsuya Nagatsu
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Patent number: 5760658Abstract: A circular-linear polarizer includes a waveguide and a one quarter wave length plate which is installed on the inside wall of the waveguide. The surfaces of the waveguide and the one-quarter wave length plate forming the junction between them are flat. Alternatively, the one quarter wave length plate has a mounting surface for mounting on the inside wall of the waveguide. The mounting surface has a circular cross section which is complementary to the circular inside cross section of the waveguide. The junction provides improved electrical contact between the waveguide and the one-quarter wavelength plate. In addition, the cross polarization and axial ratio of the waveguide are improved while maintaining good impedance characteristics.Type: GrantFiled: August 31, 1994Date of Patent: June 2, 1998Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Katsuhiko Tokuda, Yoshikazu Yoshimura
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Patent number: 5724050Abstract: A linear-circular polarizer used for the transmission in the microwave band, which provides excellent impedance characteristics and stabilized cross polarization characteristics by having 1/4 wavelength phase plates and the inner surface of a circular waveguide made in one-piece for the purpose of cost and production step reduction. The linear-circular polarizer includes a pair of 1/4 wavelength phase plates of a specified width and height formed opposite to each other and symmetric with respect to the waveguides central axis. The 1/4 wavelength phase plates are formed on the inner surface of a circular waveguide at a closed end opposite to an end where a primary radiator is located.Type: GrantFiled: September 12, 1995Date of Patent: March 3, 1998Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Katsuhiko Tokuda, Yoshikazu Yoshimura, Tatsuya Nagatsu
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Patent number: 5699072Abstract: The feed-horn with helical antenna element of this invention comprises (1) a waveguide made of conductive cylinder having a step inside, the inner diameter in the vicinity of the opening face of the waveguide is larger than that of the base of the waveguide, and (2) a helical antenna element disposed at the base axial center of the waveguide. Introduction of the step-formed inside to the waveguide makes it possible to obtain excellent characteristics both of cross polarization and impedance.Type: GrantFiled: May 28, 1996Date of Patent: December 16, 1997Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Katsuhiko Tokuda, Yoshikazu Yoshimura
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Patent number: 5434586Abstract: A multibeam antenna for simultaneously receiving waves from one or more communication satellites and a broadcast satellite, which are apart in their stationary orbit positions over the equator, is disclosed. The antenna employs an offset parabolic face, used as a reflector for receiving satellite broadcast waves, a converter having a primary radiator for receiving communication satellite Waves set at the focus point of the offset parabolic face, and a converter having a primary radiator for receiving broadcast satellite waves set near the envelope of the broadcast waves reflected from the offset parabolic face. The offset parabolic face is pointed in the direction of the communication satellite such that the plane of symmetry of the offset parabolic face is coincident with a plane specified by the communication satellite, the broadcast satellite, and the receiving point of the antenna.Type: GrantFiled: November 10, 1993Date of Patent: July 18, 1995Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Akira Kinoshita, Mamoru Nomoto, Katsuhiko Tokuda, Yoshikazu Yoshimura
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Patent number: 4663080Abstract: Hypo-allergenic moss oil from which ethyl hematommate and/or ethyl chlorohematommate or atranorin and/or chloroatranorin are substantially removed. This hypo-allergenic moss oil can be produced by chromatography separation, solvent extraction, countercurrent partition, and/or membrane separation or catalytic hydrogenation treatment and/or alkaline treatment.Type: GrantFiled: May 20, 1986Date of Patent: May 5, 1987Assignee: Shiseido Company Ltd.Inventors: Yushi Terajima, Katsuhiko Tokuda, Shoji Nakamura, Keiichi Uehara, Hideyuki Ichikawa, Shinobu Iwakami
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Patent number: D652062Type: GrantFiled: June 27, 2011Date of Patent: January 10, 2012Assignees: Hitachi Construction Machinery Co., Ltd., KCM CorporationInventors: Kazuhiko Hiraoka, Jujitsu Murota, Hirofumi Oouchi, Katsuhiko Tokuda, Mikio Hara, Keisuke Kobayashi, Tsutomu Aoki