Patents by Inventor Takayuki Fukuoka
Takayuki Fukuoka 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: 20240092693Abstract: Provided is a method of producing a roadbed material from which less hexavalent chromium leaches out through use of a crushed product of a cementitious hardened body containing hexavalent chromium as a raw material. The method includes a carbonation treatment step of subjecting the crushed product of the cementitious hardened body to carbonation treatment with a carbon dioxide-containing gas having a temperature of 50° C. to 140° C. and a water content of 1.5% or more to obtain the roadbed material from which less hexavalent chromium leaches out than before the treatment. Preferably, the method includes, before the carbonation treatment step, a crushing step of crushing the cementitious hardened body to obtain a crushed product consisting of grains having a grain size of 100 mm or less at a ratio of 50 mass % or more and a grain size of 2.36 mm or less at a ratio of 1 mass % or more.Type: ApplicationFiled: March 16, 2022Publication date: March 21, 2024Inventors: Takahito NOZAKI, Aoi FUKUOKA, Kouki ICHITSUBO, Takayuki HAYAKAWA, Takafumi NOGUCHI, Dianchao WANG
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Patent number: 11901709Abstract: Provided is a gas-insulated switchgear having a circuit breaker tank with a reduced size. The gas-insulated switchgear includes: a connection conductor connected to two or more power cables, for each phase, inside the circuit breaker tank; a solid-insulated bus placed outside the circuit breaker tank and connected to the connection conductor via a connection bushing; and an instrument current transformer attached to the solid-insulated bus.Type: GrantFiled: March 24, 2020Date of Patent: February 13, 2024Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Takayuki Fukuoka, Naoaki Inoue
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Publication number: 20220368116Abstract: Provided is a gas-insulated switchgear having a circuit breaker tank with a reduced size. The gas-insulated switchgear includes: a connection conductor connected to two or more power cables, for each phase, inside the circuit breaker tank; a solid-insulated bus placed outside the circuit breaker tank and connected to the connection conductor via a connection bushing; and an instrument current transformer attached to the solid-insulated bus.Type: ApplicationFiled: March 24, 2020Publication date: November 17, 2022Applicant: Mitsubishi Electric CorporationInventors: Takayuki FUKUOKA, Naoaki INOUE
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Patent number: 10268250Abstract: A semiconductor device having an active mode and a standby mode as operation modes, includes a first power supply line supplied with a first internal power supply voltage from a first external power supply and an internal power supply circuit generating a second internal power supply voltage based on an external power supply voltage from a second external power supply circuit. A second power supply line supplied with said second internal power supply voltage from said internal power supply circuit.Type: GrantFiled: July 13, 2017Date of Patent: April 23, 2019Assignee: RENESAS ELECTRONICS CORPORATIONInventors: Hiromi Notani, Takayuki Fukuoka, Takashi Yamaki
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Publication number: 20170308138Abstract: A semiconductor device having an active mode and a standby mode as operation modes, includes a first power supply line supplied with a first internal power supply voltage from a first external power supply and an internal power supply circuit generating a second internal power supply voltage based on an external power supply voltage from a second external power supply circuit. A second power supply line supplied with said second internal power supply voltage from said internal power supply circuit.Type: ApplicationFiled: July 13, 2017Publication date: October 26, 2017Inventors: Hiromi Notani, Takayuki Fukuoka, Takashi Yamaki
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Patent number: 9727106Abstract: In an active mode, a VDD line receives an internal power supply voltage from an external regulator. A VDD_RAM line receives an internal power supply voltage from an internal regulator. A PMOS switch includes a first PMOS transistor having a source and an N-type well connected to the VDD line, and a second PMOS transistor having a source and an N-type well connected to the VDD_RAM line and a drain connected to a drain of the first PMOS transistor. The first PMOS transistor is controlled based on a control command from a system control circuit and a voltage of the VDD_RAM line. The second PMOS transistor is controlled based on the control command and a voltage of the VDD line.Type: GrantFiled: December 19, 2013Date of Patent: August 8, 2017Assignee: RENESAS ELECTRONICS CORPORATIONInventors: Hiromi Notani, Takayuki Fukuoka, Takashi Yamaki
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Patent number: 9318887Abstract: An object of the present invention is to obtain a resin molded bushing which can easily perform positioning of an electric field relaxation shield in a switchgear. The resin molded bushing includes: an electric field relaxation shield which concentrically surrounds the outer periphery of an internal conductor made of conductor; a cast resin which covers the internal conductor and the electric field relaxation shield; and an elastic member which is disposed on the outer periphery of the electric field relaxation shield and is embedded in the cast resin. The height of the elastic member is equal to the thickness of the cast resin which covers the electric field relaxation shield.Type: GrantFiled: February 28, 2013Date of Patent: April 19, 2016Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Takayuki Fukuoka, Hiroshi Isoya, Tadahiro Yoshida, Yoshiharu Irie
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Patent number: 9287821Abstract: A DC electric motor control device has a motor driving circuit that is constructed by a plurality of switching elements, a controller that operates the motor driving circuit to control a normal rotation or a reverse rotation of a DC electric motor, and an abnormality determination part that determines whether an abnormality is generated while the controller controls the DC electric motor. The controller previously performs reverse rotation control of the DC electric motor for a predetermined time using the motor driving circuit when performing normal rotation control of the DC electric motor, and the controller performs the normal rotation control only when the abnormality determination part determines that the abnormality is not generated during the reverse rotation control.Type: GrantFiled: February 8, 2013Date of Patent: March 15, 2016Assignee: OMRON AUTOMOTIVE ELECTRONICS CO., LTD.Inventors: Takayuki Fukuoka, Yoshiki Yamagishi, Satoshi Kido, Yasutaka Shirota
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Publication number: 20150244158Abstract: An object of the present invention is to obtain a resin molded bushing which can easily perform positioning of an electric field relaxation shield in a switchgear. The resin molded bushing includes: an electric field relaxation shield which concentrically surrounds the outer periphery of an internal conductor made of conductor; a cast resin which covers the internal conductor and the electric field relaxation shield; and an elastic member which is disposed on the outer periphery of the electric field relaxation shield and is embedded in the cast resin. The height of the elastic member is equal to the thickness of the cast resin which covers the electric field relaxation shield.Type: ApplicationFiled: February 28, 2013Publication date: August 27, 2015Applicant: Mitsubishi Electric CorporationInventors: Takayuki FUKUOKA, Hiroshi ISOYA, Tadahiro YOSHIDA, Yoshiharu IRIE
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Patent number: 8917038Abstract: A motor control device has a drive circuit that drives an electric motor with a battery as a power supply, a switch element that is provided between the battery and the drive circuit, the switch element supplying a current from the battery to the drive circuit when being turned on, the switch element cutting off the current from the battery to the drive circuit when being turned off, a rotation speed detector that detects a rotation speed of the electric motor, and a controller that operates the drive circuit to control the electric motor. The controller turns on the switch element when the rotation speed of the electric motor, which is detected by the rotation speed detector, is greater than or equal to a first predetermined value during stopping of the control of the electric motor.Type: GrantFiled: August 8, 2012Date of Patent: December 23, 2014Assignee: Omron Automotive Electronics Co., Ltd.Inventors: Takayuki Fukuoka, Yoshiki Yamagishi, Satoshi Kido, Yasutaka Shirota
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Patent number: 8872458Abstract: A motor control device has a drive circuit that drives an electric motor with a battery as a power supply, a switch element that is provided between the battery and the drive circuit, the switch element supplying a current from the battery to the drive circuit when being put into an on state, the switch element cutting off the current from the battery to the drive circuit when being put into an off state, a voltage detector that detects a voltage at the drive circuit, and a controller that operates the drive circuit to control the electric motor. The controller turns on the switch element when the voltage at the drive circuit, which is detected by the voltage detector, is greater than or equal to a first predetermined value during stopping of the control of the electric motor.Type: GrantFiled: August 8, 2012Date of Patent: October 28, 2014Assignee: Omron Automotive Electronics Co., Ltd.Inventors: Takayuki Fukuoka, Yoshiki Yamagishi, Satoshi Kido, Yasutaka Shirota
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Publication number: 20140189381Abstract: In an active mode, a VDD line receives an internal power supply voltage from an external regulator. A VDD_RAM line receives an internal power supply voltage from an internal regulator. A PMOS switch includes a first PMOS transistor having a source and an N-type well connected to the VDD line, and a second PMOS transistor having a source and an N-type well connected to the VDD_RAM line and a drain connected to a drain of the first PMOS transistor. The first PMOS transistor is controlled based on a control command from a system control circuit and a voltage of the VDD_RAM line. The second PMOS transistor is controlled based on the control command and a voltage of the VDD line.Type: ApplicationFiled: December 19, 2013Publication date: July 3, 2014Applicant: Renesas Electronics CorporationInventors: Hiromi Notani, Takayuki Fukuoka, Takashi Yamaki
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Publication number: 20130207576Abstract: A DC electric motor control device has a motor driving circuit that is constructed by a plurality of switching elements, a controller that operates the motor driving circuit to control a normal rotation or a reverse rotation of a DC electric motor, and an abnormality determination part that determines whether an abnormality is generated while the controller controls the DC electric motor. The controller previously performs reverse rotation control of the DC electric motor for a predetermined time using the motor driving circuit when performing normal rotation control of the DC electric motor, and the controller performs the normal rotation control only when the abnormality determination part determines that the abnormality is not generated during the reverse rotation control.Type: ApplicationFiled: February 8, 2013Publication date: August 15, 2013Inventors: Takayuki Fukuoka, Yoshiki Yamagishi, Satoshi Kido, Yasutaka Shirota
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Publication number: 20130038262Abstract: A motor control device has a drive circuit that drives an electric motor with a battery as a power supply, a switch element that is provided between the battery and the drive circuit, the switch element supplying a current from the battery to the drive circuit when being put into an on state, the switch element cutting off the current from the battery to the drive circuit when being put into an off state, a voltage detector that detects a voltage at the drive circuit, and a controller that operates the drive circuit to control the electric motor. The controller turns on the switch element when the voltage at the drive circuit, which is detected by the voltage detector, is greater than or equal to a first predetermined value during stopping of the control of the electric motor.Type: ApplicationFiled: August 8, 2012Publication date: February 14, 2013Applicant: OMRON AUTOMOTIVE ELECTRONICS CO., LTD.Inventors: Takayuki Fukuoka, Yoshiki Yamagishi, Satoshi Kido, Yasutaka Shirota
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Publication number: 20130038251Abstract: A motor control device has a drive circuit that drives an electric motor with a battery as a power supply, a switch element that is provided between the battery and the drive circuit, the switch element supplying a current from the battery to the drive circuit when being turned on, the switch element cutting off the current from the battery to the drive circuit when being turned off, a rotation speed detector that detects a rotation speed of the electric motor, and a controller that operates the drive circuit to control the electric motor. The controller turns on the switch element when the rotation speed of the electric motor, which is detected by the rotation speed detector, is greater than or equal to a first predetermined value during stopping of the control of the electric motor.Type: ApplicationFiled: August 8, 2012Publication date: February 14, 2013Applicant: OMRON AUTOMOTIVE ELECTRONICS CO., LTD.Inventors: Takayuki Fukuoka, Yoshiki Yamagishi, Satoshi Kido, Yasutaka Shirota
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Patent number: 6309477Abstract: The present invention is relates to pretreatment chemicals metal materials to be painted containing at least one kind of sulfur-containing compounds and at least one of phosphorus ion-containing compounds, and an anticorrosive treatment of metal materials, by the pretreatment chemicals.Type: GrantFiled: August 13, 1999Date of Patent: October 30, 2001Assignee: Nippon Paint Co., Ltd.Inventors: Toshiaki Shimakura, Yutaka Wada, Takayuki Fukuoka
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Patent number: 6294262Abstract: Disclosed is a composition and a process for anticorrosive treatment of the surface of non-ferrous metal. The composition is obtainable by treating an aqueous solution of CrO3 and an inorganic acid with phosphorous acid as a reducing agent until substantially 100% of hexavalent chromium contained in the starting solution is reduced.Type: GrantFiled: April 5, 1999Date of Patent: September 25, 2001Assignee: Nippon Paint Co., Ltd.Inventor: Takayuki Fukuoka