Patents by Inventor Kohei Fujii
Kohei Fujii 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: 20240133041Abstract: A coated and plated steel sheet or coated and plated steel strip including: a steel sheet or a steel strip; a plating layer provided on one surface or both surfaces of the steel sheet or steel strip and containing zinc; a chemical conversion coating provided on the plating layer provided on one surface of the steel sheet or steel strip or provided on at least one of the plating layers provided on both surfaces of the steel sheet or steel strip; and a single-layer or multilayer coating film provided on the chemical conversion coating, in which the single-layer coating film in contact with the chemical conversion coating or the coating film, of the multilayer coating film, which is in contact with the chemical conversion coating, contains a cerium compound capable of being dissolved in an amount of 0.10 g or more with respect to 100 g of water at room temperature at a concentration of from 0.01 to 10.Type: ApplicationFiled: March 8, 2021Publication date: April 25, 2024Inventors: Takashi FUJII, Kohei UEDA
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Publication number: 20240128939Abstract: A symmetrical common gate direct current bias network for stacked field effect transmitter distributed high-power amplifier, related apparatus, and related method are provided. An apparatus includes a plurality of amplifier stages connected in parallel between an input port and an output port. The apparatus can also include a first common gate voltage generator operatively connected at a first side of the plurality of amplifier stages and a second common gate voltage generator operatively connected at a second side of the plurality of amplifier stages. The first common gate voltage generator can be operatively connected to the second common gate voltage generator in a symmetrical configuration.Type: ApplicationFiled: October 18, 2022Publication date: April 18, 2024Inventor: Kohei Fujii
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Patent number: 11826094Abstract: A method of producing a catheter includes a step of arranging a lead wire in the lumen of a thermoplastic outer-layer tube such that the lead wire extends in the longitudinal direction of the outer-layer tube; a step of exposing one end of the lead wire out of an opening of the outer-layer tube; a step of joining the one end of the lead wire exposed out of the opening with the inner wall of a ring electrode; a step of covering the opening of the outer-layer tube with the ring electrode; an step of inserting a thermoplastic inner-layer tube in the lumen of the outer-layer tube; and an integrating step of heating the outer-layer tube and the inner-layer tube to integrate the outer-layer and the inner-layer tubes to form an electrode tip such that the lead wire is interlaminarly embedded and fixed between the outer-layer and the inner-layer tubes.Type: GrantFiled: March 27, 2020Date of Patent: November 28, 2023Assignee: Toray Industries, Inc.Inventors: Yumi Oka, Kohei Fujii, Kota Tsukamoto
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Publication number: 20230141641Abstract: A balloon catheter includes a housing; a catheter shaft having a proximal end portion disposed in the housing and forming a liquid feeding path communicating with an inside of a balloon attached to a distal end portion; a supply-discharge line connection portion which has an internal space communicating with the liquid feeding path, and to which a supply-discharge line that supplies and discharges liquid to and from the liquid feeding path through the internal space can be connected; and a stopcock capable of closing the internal space of the supply-discharge line connection portion. A position of the supply-discharge line connection portion with respect to the housing is fixed.Type: ApplicationFiled: March 31, 2021Publication date: May 11, 2023Inventors: Hiroyuki Harada, Yumi Oka, Kohei Fujii
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Publication number: 20230133221Abstract: A battery pack includes a plurality of batteries, thermally conductive members which are in contact with the plurality of batteries, and a case which houses the plurality of batteries and the thermally conductive members. The case includes holding parts each of which is not in contact with an end surface of the thermally conductive member, regulates displacement of two surfaces of the thermally conductive member in a direction vertical to each of the two surfaces which are connected with the end surface and positioned on sides opposite to each other, is in contact with at least one of the two surfaces, and thereby holds an end part of the thermally conductive member.Type: ApplicationFiled: March 29, 2021Publication date: May 4, 2023Inventors: Takafumi OYAKE, Makoto KUSAKABE, Masanori ISHIGAKI, Kosuke KUSABA, Satoshi YOSHIDA, Kohei FUJII
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Publication number: 20230087721Abstract: A partial structure of a battery pack includes: a battery group which is formed by stacking a plurality of layers, each of the layers being formed by arranging cylindrical batteries in parallel in a plane, the cylindrical batteries belonging to adjacent layers being arranged by shifting alignment pitches by a half pitch from each other between the adjacent layers; heat transfer plates, wherein each of the heat transfer plates is in contact with side surfaces of the cylindrical batteries arranged on both surfaces of each of the heat transfer plates, is formed by a heat transfer corrugated plate member, and extends through a gap between the cylindrical batteries along an alignment direction of the cylindrical batteries in the layers in the plane intersecting center axis lines of the cylindrical batteries, a first intersection direction intersecting the alignment direction or a second intersection direction intersecting the alignment direction and the first intersection direction; and a radiator which is arrangeType: ApplicationFiled: February 26, 2021Publication date: March 23, 2023Inventors: Takafumi OYAKE, Masanori ISHIGAKI, Tomohisa HARADA, Makoto KUSAKABE, Kosuke KUSABA, Satoshi YOSHIDA, Kohei FUJII
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Publication number: 20220321062Abstract: Various aspects of integrated amplifiers, layouts for the integrated amplifiers, and packaged arrangements of the amplifiers are described. In one example, an amplifier includes an amplifier cell, and a biasing network coupled to the common gate transistor in the amplifier cell. The amplifier cell includes a common source transistor and a common gate transistor in a cascode arrangement, where at least one of the common source transistor and the common gate transistor comprises a field plate. Among other advantages, the amplifiers described herein can be biased with relatively high voltages and still operate like a single a common source transistor, without sacrificing reliability, performance, or requiring additional off-chip components, such as biasing networks of resistors and inductors.Type: ApplicationFiled: March 31, 2021Publication date: October 6, 2022Inventors: Wayne Mack Struble, Shamit Som, Kohei Fujii, Quinn Martin, Walter Nagy
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Publication number: 20220160422Abstract: A method of producing a catheter includes a step of arranging a lead wire in the lumen of a thermoplastic outer-layer tube such that the lead wire extends in the longitudinal direction of the outer-layer tube; a step of exposing one end of the lead wire out of an opening of the outer-layer tube; a step of joining the one end of the lead wire exposed out of the opening with the inner wall of a ring electrode; a step of covering the opening of the outer-layer tube with the ring electrode; an step of inserting a thermoplastic inner-layer tube in the lumen of the outer-layer tube; and an integrating step of heating the outer-layer tube and the inner-layer tube to integrate the outer-layer and the inner-layer tubes to form an electrode tip such that the lead wire is interlaminarly embedded and fixed between the outer-layer and the inner-layer tubes.Type: ApplicationFiled: March 27, 2020Publication date: May 26, 2022Inventors: Yumi Oka, Kohei Fujii, Kota Tsukamoto
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Patent number: 11156170Abstract: A control device for an internal combustion engine includes an internal combustion engine and a valve opening-closing timing control device. The valve opening-closing timing control device has a phase adjustment mechanism for setting a relative rotation phase of a driving-side rotator and a driven-side rotator. The phase adjustment mechanism overlaps a timing of opening an intake valve with a timing of opening an exhaust valve, by setting, in a predetermined period, the relative rotation phase such that the exhaust valve closes after a top dead center position has been reached, and a bypass passage is provided that connects an exhaust passage of one cylinder that is in an exhaust process to the exhaust passage of another cylinder that is in an intake process at the same time as the exhaust process.Type: GrantFiled: February 28, 2018Date of Patent: October 26, 2021Assignee: AISIN SEIKI KABUSHIKI KAISHAInventors: Seiichi Fujimoto, Masaaki Kaneko, Hirokazu Tanaka, Suguru Kamiya, Kohei Fujii
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Publication number: 20210140377Abstract: A control device for an internal combustion engine includes an internal combustion engine and a valve opening-closing timing control device. The valve opening-closing timing control device has a phase adjustment mechanism for setting a relative rotation phase of a driving-side rotator and a driven-side rotator. The phase adjustment mechanism overlaps a timing of opening an intake valve with a timing of opening an exhaust valve, by setting, in a predetermined period, the relative rotation phase such that the exhaust valve closes after a top dead center position has been reached, and a bypass passage is provided that connects an exhaust passage of one cylinder that is in an exhaust process to the exhaust passage of another cylinder that is in an intake process at the same time as the exhaust process.Type: ApplicationFiled: February 28, 2018Publication date: May 13, 2021Applicant: AISIN SEIKI KABUSHIKI KAISHAInventors: Seiichi FUJIMOTO, Masaaki KANEKO, Hirokazu TANAKA, Suguru KAMIYA, Kohei FUJII
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Patent number: 10818617Abstract: Examples of a package for a flange mount device are described. In one example, the package includes a thermally conductive base, a base substrate, and a lid having a cavity. The base substrate includes a through hole and radio frequency (RF) input, RF output, and bias traces that extend to a perimeter of the through hole. The lid includes a cavity and RF input coupling, RF output coupling, and bias coupling traces. A device can be secured to the thermally conductive base, and the lid can be secured to the thermally conductive base, with the base substrate secured between the lid and the thermally conductive base, coupling the traces of the base substrate to the traces of the lid. Other components, such as biasing, blocking, and bypassing components can be easily integrated into the package. Impedance matching and electromagnetic shielding components can also be easily integrated into the package.Type: GrantFiled: September 28, 2018Date of Patent: October 27, 2020Assignee: MACOM TECHNOLOGY SOLUTIONS HOLDINGS, INC.Inventor: Kohei Fujii
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Patent number: 10651805Abstract: An apparatus includes a first directional coupler, a second directional coupler, a first detector, and a second detector. A through port of the first directional coupler is coupled to a through port of the second directional coupler. An isolated port of the first directional coupler is coupled to an isolated port of the second directional coupler. A coupled port of the first directional coupler is coupled to the first detector. A coupled port of the second directional coupler is coupled to the second detector. A detected power signal is generated by combining an output of the first detector and an output of the second detector.Type: GrantFiled: June 22, 2018Date of Patent: May 12, 2020Assignee: MACOM TECHNOLOGY SOLUTIONS HOLDINGS, INC.Inventor: Kohei Fujii
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Publication number: 20200105686Abstract: Examples of a package for a flange mount device are described. In one example, the package includes a thermally conductive base, a base substrate, and a lid having a cavity. The base substrate includes a through hole and radio frequency (RF) input, RF output, and bias traces that extend to a perimeter of the through hole. The lid includes a cavity and RF input coupling, RF output coupling, and bias coupling traces. A device can be secured to the thermally conductive base, and the lid can be secured to the thermally conductive base, with the base substrate secured between the lid and the thermally conductive base, coupling the traces of the base substrate to the traces of the lid. Other components, such as biasing, blocking, and bypassing components can be easily integrated into the package. Impedance matching and electromagnetic shielding components can also be easily integrated into the package.Type: ApplicationFiled: September 28, 2018Publication date: April 2, 2020Inventor: Kohei Fujii
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Patent number: 10175402Abstract: A phase difference film layered body is obtained by stretching a film before stretching, the film before stretching including: a P1 layer formed of a resin p1 containing polyphenylene ether having a positive intrinsic birefringence value and a polystyrene-based polymer having a negative intrinsic birefringence value and having a syndiotactic structure; and a P2 layer disposed in contact with the P1 layer and formed of a resin p2 containing an acrylic resin or an alicyclic structure-containing polymer. In the resin p1, the weight ratio of (the content of the polyphenylene ether)/(the content of the polystyrene-based polymer) is 35/65 to 45/55. A method for producing the phase difference film layered body and a method for producing a phase difference film using the phase difference film layered body are also provided.Type: GrantFiled: February 26, 2013Date of Patent: January 8, 2019Assignee: ZEON CORPORATIONInventors: Takashi Morita, Kohei Fujii, Tomokazu Kinohira, Shunsuke Yamanaka, Taku Hatano
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Publication number: 20180302044Abstract: An apparatus includes a first directional coupler, a second directional coupler, a first detector, and a second detector. A through port of the first directional coupler is coupled to a through port of the second directional coupler. An isolated port of the first directional coupler is coupled to an isolated port of the second directional coupler. A coupled port of the first directional coupler is coupled to the first detector. A coupled port of the second directional coupler is coupled to the second detector. A detected power signal is generated by combining an output of the first detector and an output of the second detector.Type: ApplicationFiled: June 22, 2018Publication date: October 18, 2018Inventor: Kohei Fujii
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Patent number: 10056870Abstract: An apparatus includes an input transformer, an amplifier and an output transformer. The input transformer may be on a substrate and configured to convert an input signal into a differential input signal. The input signal may be a radio-frequency signal. The amplifier may be on the substrate and configured to generate a differential output signal in response to the differential input signal. The amplifier may be a balanced and distributed amplifier. The output transformer may be on the substrate and configured to convert the differential output signal into an output signal. Each of the input transformer and the output transformer may be a three line coupled balun transformer with a variable bandpass bandwidth.Type: GrantFiled: March 22, 2017Date of Patent: August 21, 2018Assignee: MACOM TECHNOLOGY SOLUTIONS HOLDINGS, INC.Inventor: Kohei Fujii
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Patent number: 10027292Abstract: An apparatus includes a first directional coupler, a second directional coupler, a first detector, and a second detector. A through port of the first directional coupler is coupled to a through port of the second directional coupler. An isolated port of the first directional coupler is coupled to an isolated port of the second directional coupler. A coupled port of the first directional coupler is coupled to the first detector. A coupled port of the second directional coupler is coupled to the second detector. A detected power signal is generated by combining an output of the first detector and an output of the second detector.Type: GrantFiled: May 13, 2016Date of Patent: July 17, 2018Assignee: MACOM TECHNOLOGY SOLUTIONS HOLDINGS, INC.Inventor: Kohei Fujii
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Patent number: 9795923Abstract: A cartridge type hollow fiber membrane module includes: a cartridge type hollow fiber membrane element including a hollow fiber membrane bundle, a distribution cylinder, and an adhesive resin portion; a module case including a module case main body portion which has at least one port corresponding to a supply outlet of filtrate or an undiluted solution on a side surface, and a header which has a port corresponding to a supply outlet of filtrate or an undiluted solution, and accommodating the cartridge type hollow fiber membrane element; a first sealing member disposed to come into contact with the distribution cylinder and the header on an external side of a boundary surface between the supporting portion and the adhesive resin portion; and a second sealing member disposed to come into contact with an outer circumference portion of the distribution cylinder and the module case main body portion.Type: GrantFiled: February 14, 2013Date of Patent: October 24, 2017Assignee: TORAY INDUSTRIES, INC.Inventors: Hayato Inuzuka, Kohei Fujii, Norihiro Takeuchi, Atsushi Kobayashi, Takashi Mimitsuka
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Patent number: 9780746Abstract: An apparatus includes an input port, an output port, and a plurality of amplifier stages connected in parallel between the input port and the output port. Each of the amplifier stages comprises a common source field effect transistor (CSFET) and at least two common gate field effect transistors (CGFETs) coupled in series with a drain of the common source FET. At least one of the common gate field effect transistors of each stage includes a stabilizing network connected between drain and source diffusions.Type: GrantFiled: April 13, 2016Date of Patent: October 3, 2017Assignee: MACOM Technology Solutions Holdings, Inc.Inventor: Kohei Fujii
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Patent number: D964559Type: GrantFiled: September 23, 2020Date of Patent: September 20, 2022Assignee: Toray Industries, Inc.Inventors: Kohei Fujii, Yumi Oka, Hiroyuki Terasaka