Patents by Inventor Takashi Kurokawa
Takashi Kurokawa 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: 20240275050Abstract: An antenna component includes a primary coil that has a first end and a second end and a first secondary coil that has a third end electrically connected to the first end via a capacitor and a fourth end electrically connected to the second end. The antenna component includes a first terminal electrically connected to the first end and a second terminal electrically connected to the second end. The capacitor forms a resonator with the primary coil and the first secondary coil. The first terminal and the second terminal are configured to receive a signal to the antenna component, the capacitor forms a resonator circuit with the primary coil and the first secondary coil, and the resonator circuit is configured to cause a resonance when the signal has a resonance frequency of the resonator circuit.Type: ApplicationFiled: April 22, 2024Publication date: August 15, 2024Inventor: Takashi KUROKAWA
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Patent number: 11404787Abstract: A magnetic-field generating circuit includes a transformer antenna that includes a transformer including a primary coil and a secondary coil and a resonant capacitor connected in parallel to the secondary coil of the transformer and that generates a magnetic field. Moreover, an AC power supply circuit is provided that supplies an AC voltage serving as a driving voltage to the primary coil of the transformer antenna. The secondary coil and the resonant capacitor form a parallel resonant circuit whose resonant frequency is set to be equal to a frequency of the AC voltage supplied from the AC power supply circuit.Type: GrantFiled: October 3, 2019Date of Patent: August 2, 2022Assignee: MURATA MANUFACTURING CO., LTD.Inventor: Takashi Kurokawa
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Patent number: 11336014Abstract: An antenna device includes a magnetic core having first and second main surfaces and extending in a first direction, and planar first and second coils connected in series and disposed next to each other in the first direction. The first coil has a first portion located on a side of the first main surface and a second portion located on a side of the second main surface and not overlapping the first portion in a plan view. The second coil has a third portion located on the side of the first main surface and a fourth portion located on the side of the second main surface and disposed at a position that does not overlap the third portion in the plan view. The shortest distance between the second and fourth portions is shorter than the shortest distance between the second and third portions.Type: GrantFiled: March 16, 2020Date of Patent: May 17, 2022Assignee: MURATA MANUFACTURING CO., LTD.Inventor: Takashi Kurokawa
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Publication number: 20200220267Abstract: An antenna device includes a magnetic core having first and second main surfaces and extending in a first direction, and planar first and second coils connected in series and disposed next to each other in the first direction. The first coil has a first portion located on a side of the first main surface and a second portion located on a side of the second main surface and not overlapping the first portion in a plan view. The second coil has a third portion located on the side of the first main surface and a fourth portion located on the side of the second main surface and disposed at a position that does not overlap the third portion in the plan view. The shortest distance between the second and fourth portions is shorter than the shortest distance between the second and third portions.Type: ApplicationFiled: March 16, 2020Publication date: July 9, 2020Inventor: Takashi Kurokawa
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Publication number: 20200036096Abstract: A magnetic-field generating circuit includes a transformer antenna that includes a transformer including a primary coil and a secondary coil and a resonant capacitor connected in parallel to the secondary coil of the transformer and that generates a magnetic field. Moreover, an AC power supply circuit is provided that supplies an AC voltage serving as a driving voltage to the primary coil of the transformer antenna. The secondary coil and the resonant capacitor form a parallel resonant circuit whose resonant frequency is set to be equal to a frequency of the AC voltage supplied from the AC power supply circuit.Type: ApplicationFiled: October 3, 2019Publication date: January 30, 2020Inventor: Takashi Kurokawa
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Patent number: 10183369Abstract: A cutting fluid supply system includes a machine tool, a nozzle for ejecting cutting fluid, and a nozzle-moving unit for holding and moving the nozzle. The cutting fluid supply system detects an object existing in the machine tool, recognizes a position and a shape of the object based on the detection information, and specifies a machining point from the recognized information. The nozzle-moving unit moves the nozzle such that cutting fluid is ejected to the specified machining point.Type: GrantFiled: December 27, 2015Date of Patent: January 22, 2019Assignee: FANUC CORPORATIONInventor: Takashi Kurokawa
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Patent number: 10148193Abstract: A power supply unit includes a transformer including a primary winding that receives an alternating-current voltage and a secondary winding including a first end electrically connected to ground, a positive-side rectification circuit including a diode electrically connected to a second end of the secondary winding, an anode of which is electrically connected to the second end, and a cathode of which is electrically connected to a positive-side output terminal, a negative-side rectification circuit including a diode electrically connected to the second end of the secondary winding, a cathode of which is electrically connected to the second end, and an anode of which is electrically connected to a negative-side output terminal, and a capacitor provided on a path from a node between the second end of the secondary winding and the positive-side rectification circuit and the negative-side rectification circuit to the ground through the secondary winding.Type: GrantFiled: November 13, 2017Date of Patent: December 4, 2018Assignee: MURATA MANUFACTURING CO., LTD.Inventor: Takashi Kurokawa
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Publication number: 20180069484Abstract: A power supply unit includes a transformer including a primary winding that receives an alternating-current voltage and a secondary winding including a first end electrically connected to ground, a positive-side rectification circuit including a diode electrically connected to a second end of the secondary winding, an anode of which is electrically connected to the second end, and a cathode of which is electrically connected to a positive-side output terminal, a negative-side rectification circuit including a diode electrically connected to the second end of the secondary winding, a cathode of which is electrically connected to the second end, and an anode of which is electrically connected to a negative-side output terminal, and a capacitor provided on a path from a node between the second end of the secondary winding and the positive-side rectification circuit and the negative-side rectification circuit to the ground through the secondary winding.Type: ApplicationFiled: November 13, 2017Publication date: March 8, 2018Inventor: Takashi KUROKAWA
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Patent number: 9499147Abstract: The vehicle brake system includes a cylinder, an output piston disposed in the cylinder, an input piston disposed in the cylinder but separating from the output piston and defining a separation chamber therebetween, a brake pedal connected to the input piston, a reaction force generating device for generating an elastic reaction force, a separation lock valve for controlling the communication between the separation chamber and the reaction force generating device, a fade state judging portion to judge whether the friction brake device is in a fade state or not and a friction braking force control portion for changing the mode to the fade state when the fade state judging portion judged that the friction brake device is in the fade state, wherein a desired friction braking force can be assured even under the brake fade state.Type: GrantFiled: June 14, 2013Date of Patent: November 22, 2016Assignee: ADVICS CO., LTD.Inventors: Yosuke Yamasoe, Hiroaki Niino, Yoshio Masuda, Takashi Kurokawa, Kiyoyuki Uchida, Masaaki Komazawa, Akira Sakai, Yasuji Mizutani, Yusuke Kamiya
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Publication number: 20160184951Abstract: A cutting fluid supply system includes a machine tool, a nozzle for injecting cutting fluid, and a nozzle-moving unit for holding and moving the nozzle. The cutting fluid supply system detects an object existing in the machine tool, recognizes a position and a shape of the object based on the detection information, and specifies a machining point from the recognized information. The nozzle-moving unit moves the nozzle such that cutting fluid is injected to the specified machining point.Type: ApplicationFiled: December 27, 2015Publication date: June 30, 2016Inventor: Takashi KUROKAWA
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Patent number: 9346442Abstract: When a brake switch is switched from OFF to ON, current is applied to a brake ECU, and a command to switch a master cylinder from a second state to a first state is issued after a lapse of preparation time, so that switching-time change suppression control is performed. A reservoir shutoff valve is closed, and duty control is performed on a communication control valve. The duty ratio is set to 1 when a switching-time control duration expires, and the communication control valve is placed in an open position, to establish the first state. Thus, since the communication control valve is duty-controlled during switching from the second state to the first state, change in the hydraulic pressure of an input chamber is suppressed, and change of the operating feeling is suppressed.Type: GrantFiled: March 27, 2013Date of Patent: May 24, 2016Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, ADVICS CO., LTD.Inventors: Yusuke Kamiya, Akira Sakai, Kiyoyuki Uchida, Masaki Maruyama, Yoshio Masuda, Hiroaki Niino, Takashi Kurokawa
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Publication number: 20150151729Abstract: The vehicle brake system includes a cylinder, an output piston disposed in the cylinder, an input piston disposed in the cylinder but separating from the output piston and defining a separation chamber therebetween, a brake pedal connected to the input piston, a reaction force generating device for generating an elastic reaction force, a separation lock valve for controlling the communication between the separation chamber and the reaction force generating device, a fade state judging portion to judge whether the friction brake device is in a fade state or not and a friction braking force control portion for changing the mode to the fade state when the fade state judging portion judged that the friction brake device is in the fade state, wherein a desired friction braking force can be assured even under the brake fade state.Type: ApplicationFiled: June 14, 2013Publication date: June 4, 2015Inventors: Yosuke Yamasoe, Hiroaki Niino, Yoshio Masuda, Takashi Kurokawa, Kiyoyuki Uchida, Masaaki Komazawa, Akira Sakai, Yasuji Mizutani, Yusuke Kamiya
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Publication number: 20150120161Abstract: When a brake switch is switched from OFF to ON, current is applied to a brake ECU, and a command to switch a master cylinder from a second state to a first state is issued after a lapse of preparation time, so that switching-time change suppression control is performed. A reservoir shutoff valve is closed, and duty control is performed on a communication control valve. The duty ratio is set to 1 when a switching-time control duration expires, and the communication control valve is placed in an open position, to establish the first state. Thus, since the communication control valve is duty-controlled during switching from the second state to the first state, change in the hydraulic pressure of an input chamber is suppressed, and change of the operating feeling is suppressed.Type: ApplicationFiled: March 27, 2013Publication date: April 30, 2015Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, ADVICS CO., LTD.Inventors: Yusuke Kamiya, Akira Sakai, Kiyoyuki Uchida, Masaki Maruyama, Yoshio Masuda, Hiroaki Niino, Takashi Kurokawa
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Patent number: 8939519Abstract: A vehicle brake device includes a master cylinder having a master piston moved by servo pressure in a servo chamber and master pressure of a master chamber is changed by movement of the master piston. A mechanical servo pressure generating unit is connected to a high pressure source and the servo chamber, and generates a servo pressure within the servo chamber according to pilot pressure within a pilot chamber based on brake fluid pressure of the high pressure source. An electrical pilot pressure generating unit is connected to the pilot chamber and generates desired pilot pressure within the pilot chamber, and a master chamber-to-pilot chamber brake fluid line connects the master chamber with the pilot chamber so pilot pressure is generated by the pilot pressure generating unit during normal operation of a power supply system, and the master pressure is used as pilot pressure when the power supply system fails.Type: GrantFiled: November 23, 2012Date of Patent: January 27, 2015Assignee: Advics Co., Ltd.Inventors: Yoshio Masuda, Hiroaki Niino, Takashi Kurokawa
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Publication number: 20140233078Abstract: An image processing apparatus includes an automatic document feeder for conveying a document to pass through an image reading position for discharging, and a main body portion for irradiating the document with light at the image reading position and receiving reflection light of the irradiated light to read an image of the document, in which the automatic document feeder is provided so as to be able to be opened and closed with respect to the main body portion. The image processing apparatus, while the automatic document feeder conveys a document, irradiates a white plate with light in the absence of the document at the image reading position to read an image thereof and analyzes the read image of the white plate so as to detect opening and closing of the automatic document feeder.Type: ApplicationFiled: January 22, 2014Publication date: August 21, 2014Applicant: Sharp Kabushiki KaishaInventor: Takashi KUROKAWA
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Patent number: 8593657Abstract: A specific color detecting section 1 includes: a comparing section 7 for comparing, with reference thresholds, color densities of color image data of plural colors in input image data, so as to judge whether or not the input image data include color image data of a specific color of an image pattern; and a threshold setting section 51 for setting calculated thresholds or theoretical thresholds as the reference thresholds, wherein the threshold setting section 51 a calculated threshold as a reference threshold if the calculated threshold is within an allowable range of the theoretical threshold, and the threshold setting section sets a theoretical threshold as a reference threshold if the calculated threshold is out of the allowable range of the theoretical threshold, the threshold setting section being configured to calculate out the calculated thresholds for the reference thresholds from reference image data obtained by reading out a reference chart having plural colors in predetermined color densities, andType: GrantFiled: January 27, 2011Date of Patent: November 26, 2013Assignee: Sharp Kabushiki KaishaInventor: Takashi Kurokawa
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Patent number: 8568446Abstract: A surgical device comprises a housing, a plurality of media reservoirs, an end effector, and a pumping device. Each media reservoir is configured to receive at least one component of a tissue repair composition. The end effector is configured for insertion into a lumen to deliver a tissue repair composition into that lumen. The end effector has at least one fluid conduit and at least one orifice in communication with the fluid conduit. The pumping device is operable to urge a tissue repair composition comprising at least a portion of the contents of the plurality of media reservoirs through the fluid conduit of the end effector such that the tissue repair composition is expelled from the at least one orifice. The media reservoirs may contain medical fluid components such as viable cells and scaffold material to repair a fistula or address some other condition in a patient.Type: GrantFiled: May 13, 2010Date of Patent: October 29, 2013Assignee: Ethicon Endo-Surgery, Inc.Inventors: Takashi Kurokawa, Christopher W. Widenhouse, Agnieszka Seyda, Jeffrey S. Swayze, Foster B. Stulen, Mark H. Ransick, Richard W. Timm, Shailendra K. Parihar, Shelby L. Cook Kornbluth
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Publication number: 20130215484Abstract: A hologram display module 100 that a large number of light source elements and a large number of spatial light modulation elements overlapped with the light source elements are arranged: wherein the light source element is arranged quadratically in area of predetermined height width to comprise each of scanline forming a line in height direction; openings of the light source elements are placed each other in distinct position horizontally; the light source elements produce lights that are coherence spatially each other, respectively; the spatial light modulation element spatially modulates light from the light source element for independence, respectively.Type: ApplicationFiled: August 25, 2011Publication date: August 22, 2013Applicant: Tokyo University of Agriculture and Technology National University CorporationInventors: Yasuhiro Takaki, Takashi Kurokawa
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Patent number: 8384970Abstract: A document setting position on a document set tray 101 where a small-sized document is set is determined by positionally matching a near-side reference position (a position of or set in the vicinity of a user-side end of a document placement surface of the document set tray 101) and a user-side edge of the document. An output tray 114 has a window 115 made from a transparent material so as to allow a user to see a document setting position on the document set tray 101 where the user sets a small-sized document. This makes it possible to adjust a position on the document set tray 101 where a document is placed, in use of an image reading apparatus 100 in which the document set tray 101 for placing thereon a document to be read is provided below the output tray 114 for placing a read document thereon.Type: GrantFiled: October 22, 2010Date of Patent: February 26, 2013Assignee: Sharp Kabushiki KaishaInventor: Takashi Kurokawa
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Publication number: 20110282324Abstract: A surgical device comprises a housing, a plurality of media reservoirs, an end effector, and a pumping device. Each media reservoir is configured to receive at least one component of a tissue repair composition. The end effector is configured for insertion into a lumen to deliver a tissue repair composition into that lumen. The end effector has at least one fluid conduit and at least one orifice in communication with the fluid conduit. The pumping device is operable to urge a tissue repair composition comprising at least a portion of the contents of the plurality of media reservoirs through the fluid conduit of the end effector such that the tissue repair composition is expelled from the at least one orifice. The media reservoirs may contain medical fluid components such as viable cells and scaffold material to repair a fistula or address some other condition in a patient.Type: ApplicationFiled: May 13, 2010Publication date: November 17, 2011Inventors: Takashi Kurokawa, Christopher W. Widenhouse, Agnieszka Seyda, Jeffrey S. Swayze, Foster B. Stulen, Mark H. Ransick, Richard W. Timm, Shailendra K. Parihar, Shelby L. Cook Kornbluth