Patents by Inventor Kenichi Seki
Kenichi Seki 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: 11037734Abstract: A mounting structure minimizes the influence of displacements, along a length direction of a resistor, in mounting positions of capacitor electrodes on the electrical characteristics of a circuit including a parallel circuit composed of a capacitor and the resistor. The capacitor has first and second electrodes, which respectively include first and second side surface portions disposed in parallel to a length direction of the resistor. The resistor has a first resistance body corresponding to the first side surface portions and a second resistance body corresponding to the second side surface portions that are separately disposed along the length direction and connected in series via a wire, and is mounted so that the first resistance body is positioned directly facing the first side surface portions and the second resistance body is positioned directly facing the second side surface portions.Type: GrantFiled: December 16, 2019Date of Patent: June 15, 2021Assignee: HIOKI E.E. CORPORATIONInventors: Shuhei Yamada, Kazunobu Hayashi, Kenichi Seki, Hajime Yoda, Toshio Heishi
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Publication number: 20200203080Abstract: A mounting structure minimizes the influence of displacements, along a length direction of a resistor, in mounting positions of capacitor electrodes on the electrical characteristics of a circuit including a parallel circuit composed of a capacitor and the resistor. The capacitor has first and second electrodes, which respectively include first and second side surface portions disposed in parallel to a length direction of the resistor. The resistor has a first resistance body corresponding to the first side surface portions and a second resistance body corresponding to the second side surface portions that are separately disposed along the length direction and connected in series via a wire, and is mounted so that the first resistance body is positioned directly facing the first side surface portions and the second resistance body is positioned directly facing the second side surface portions.Type: ApplicationFiled: December 16, 2019Publication date: June 25, 2020Applicant: HIOKI E.E. CORPORATIONInventors: Shuhei YAMADA, Kazunobu HAYASHI, Kenichi SEKI, Hajime YODA, Toshio HEISHI
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Patent number: 10670635Abstract: A current detector includes a ring-shaped core for inserting a wire; a detection winding on the core; and resistor connectors for connecting a resistor in series to the detection winding. The detection winding has a first winding at a first end and a second winding at a second end that are connected in series. The first winding and second winding each have n (where n is three or higher) first or second unit windings in series. The core surface is partitioned into 2n regions around the core. The first unit windings are formed in odd-numbered regions and the second unit windings are formed in even-numbered regions. A jth (where j is 1 to n) first unit winding from the first end and a jth second unit winding from the second end are not adjacent and are formed with an equal number of turns.Type: GrantFiled: June 28, 2018Date of Patent: June 2, 2020Assignee: HIOKI DENKI KABUSHIKI KAISHAInventors: Kazunobu Hayashi, Kenichi Seki, Hajime Yoda
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Patent number: 10288649Abstract: A current sensor includes: a magnetic core that surrounds a detected object; a first sensor with a first sub-magnetic core incorporated in the magnetic core and a first winding wound around the first sub-magnetic core; a second sensor with a second sub-magnetic core incorporated in the magnetic core and a second winding wound around the second sub-magnetic core in the opposite direction to the first winding; a signal generator outputting signals to magnetize the first and second windings with inverted phases; a detector outputting a detection signal whose amplitude is proportionate to a current in the detected object based on the difference between first and second voltage signals generated in the first and second windings; and a waveform adjuster that is connected to at least one of the first and the second windings and adjusts the waveform of a voltage signal generated by the connected winding.Type: GrantFiled: October 13, 2016Date of Patent: May 14, 2019Assignee: HIOKI DENKI KABUSHIKI KAISHAInventors: Kenichi Seki, Kazunobu Hayashi, Hajime Yoda
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Publication number: 20190004095Abstract: A current detector includes a ring-shaped core for inserting a wire; a detection winding on the core; and resistor connectors for connecting a resistor in series to the detection winding. The detection winding has a first winding at a first end and a second winding at a second end that are connected in series. The first winding and second winding each have n (where n is three or higher) first or second unit windings in series. The core surface is partitioned into 2n regions around the core. The first unit windings are formed in odd-numbered regions and the second unit windings are formed in even-numbered regions. A jth (where j is 1 to n) first unit winding from the first end and a jth second unit winding from the second end are not adjacent and are formed with an equal number of turns.Type: ApplicationFiled: June 28, 2018Publication date: January 3, 2019Applicant: HIOKI DENKI KABUSHIKI KAISHAInventors: Kazunobu HAYASHI, Kenichi SEKI, Hajime YODA
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Patent number: 9738654Abstract: The problem of the present invention is to provide a production method for safely synthesizing a nitrogen-containing heterocyclic N-oxide compound in high yield. Another problem of the present invention is to provide a novel N-oxide compound. There is provided a method for producing a nitrogen-containing heterocyclic N-oxide compound of Formula (2), such as 2,2,7,9-tetramethyl-2H-pyrano[2,3-g]quinoline N-oxide, by oxidizing a nitrogen-containing heterocyclic compound of Formula (1), such as 2,2,7,9-tetramethyl-2H-pyrano[2,3-g]quinoline with a persulfate.Type: GrantFiled: September 13, 2013Date of Patent: August 22, 2017Assignee: NISSAN CHEMICAL INDUSTRIES, LTD.Inventors: Hironobu Yoshino, Kenichi Seki, Hirohide Kitsuyama, Ikumasa Hidaka
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Publication number: 20170115328Abstract: A current sensor includes: a magnetic core that surrounds a detected object; a first sensor with a first sub-magnetic core incorporated in the magnetic core and a first winding wound around the first sub-magnetic core; a second sensor with a second sub-magnetic core incorporated in the magnetic core and a second winding wound around the second sub-magnetic core in the opposite direction to the first winding; a signal generator outputting signals to magnetize the first and second windings with inverted phases; a detector outputting a detection signal whose amplitude is proportionate to a current in the detected object based on the difference between first and second voltage signals generated in the first and second windings; and a waveform adjuster that is connected to at least one of the first and the second windings and adjusts the waveform of a voltage signal generated by the connected winding.Type: ApplicationFiled: October 13, 2016Publication date: April 27, 2017Applicant: HIOKI DENKI KABUSHIKI KAISHAInventors: Kenichi SEKI, Kazunobu HAYASHI, Hajime YODA
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Publication number: 20150266887Abstract: The problem of the present invention is to provide a production method for safely synthesizing a nitrogen-containing heterocyclic N-oxide compound in high yield. Another problem of the present invention is to provide a novel N-oxide compound. There is provided a method for producing a nitrogen-containing heterocyclic N-oxide compound of Formula (2), such as 2,2,7,9-tetramethyl-2H-pyrano[2,3-g]quinoline N-oxide, by oxidizing a nitrogen-containing heterocyclic compound of Formula (1), such as 2,2,7,9-tetramethyl-2H-pyrano[2,3-g]quinoline with a persulfate.Type: ApplicationFiled: September 13, 2013Publication date: September 24, 2015Inventors: Hironobu Yoshino, Kenichi Seki, Hirohide Kitsuyama, Ikumasa Hidaka
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Patent number: 8483926Abstract: Apparatus for estimating a ground contact surface gripping characteristic of a vehicle wheel of a vehicle comprises an input section and an output section. The input section sets an input representing a ratio of a wheel force acting on the vehicle wheel in the ground contact surface, and a wheel slipping degree of the vehicle wheel. The output section determines, from the input, an output representing a grip characteristic parameter indicative of the gripping characteristic of the vehicle wheel.Type: GrantFiled: April 16, 2008Date of Patent: July 9, 2013Assignee: Nissan Motor Co., Ltd.Inventors: Yuuki Shiozawa, Masaaki Nawano, Hiroshi Mouri, Masatsugu Yokote, Masahiro Kubota, Kenichi Seki
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Patent number: 7898798Abstract: A heat dissipating structure for an electronic component of the present invention includes a main board on which electronic components are mounted, a heat sink disposed facing the main board and contacting a plurality of the electronic components on the main board, a heat pipe disposed on the heat sink, an arm branching from the heat sink and elastically deformable in relation to the heat sink, and a cooling fan located at the end portion of the heat pipe.Type: GrantFiled: November 28, 2008Date of Patent: March 1, 2011Assignee: Sony CorporationInventors: Tatsuya Sakata, Toru Yamauchi, Kenichi Seki, Terutaka Yana
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Patent number: 7762373Abstract: A fan noise control apparatus is provided to facilitate the reduction of noise. According to the preferred embodiments, an acoustically transparent portion is provided to permit noise from one source to pass through to interact and cancel with another noise.Type: GrantFiled: May 9, 2006Date of Patent: July 27, 2010Assignee: Sony CorporationInventors: J. Stuart Bolton, Moohyung Lee, Kenichi Seki, Hiroto Ido
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Publication number: 20100114449Abstract: Apparatus for estimating a ground contact surface gripping characteristic of a vehicle wheel of a vehicle comprises an input section and an output section. The input section sets an input representing a ratio of a wheel force acting on the vehicle wheel in the ground contact surface, and a wheel slipping degree of the vehicle wheel. The output section determines, from the input, an output representing a grip characteristic parameter indicative of the gripping characteristic of the vehicle wheel.Type: ApplicationFiled: April 16, 2008Publication date: May 6, 2010Inventors: Yuuki Shiozawa, Masaaki Nawano, Hiroshi Mouri, Masatsugu Yokote, Masahiro Kubota, Kenichi Seki
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Publication number: 20090141450Abstract: A heat dissipating structure for an electronic component of the present invention includes a main board on which electronic components are mounted, a heat sink disposed facing the main board and contacting a plurality of the electronic components on the main board, a heat pipe disposed on the heat sink, an arm branching from the heat sink and elastically deformable in relation to the heat sink, and a cooling fan located at the end portion of the heat pipe.Type: ApplicationFiled: November 28, 2008Publication date: June 4, 2009Applicant: Sony CorporationInventors: Tatsuya SAKATA, Toru YAMAUCHI, Kenichi SEKI, Terutaka YANA
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Publication number: 20060269077Abstract: A fan noise control apparatus is provided to facilitate the reduction of noise. According to the preferred embodiments, an acoustically transparent portion is provided to permit noise from one source to pass through to interact and cancel with another noise.Type: ApplicationFiled: May 9, 2006Publication date: November 30, 2006Applicant: Purdue Research FoundationInventors: J. Bolton, Lee Moohyung, Kenichi Seki, Hiroto Ido
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Patent number: 5608956Abstract: A system for automatically connecting a seat back to a seat cushion to assemble a seat, which includes a first setting device for setting the seat back upright, a second setting device for setting a seat cushion horizontally, and a robot hand device. The seat back is easily set on the first setting device, with a part of its upholstery being turned up by a retaining element of the same first setting device to expose the associated connecting member. The robot hand device includes a pressure arm element to pressingly hold such turned-up part of seat back upholstery. The seat back is transferred by the robot hand device to the second setting device, maintaining such turned-up state of the upholstery part all the way, so that the exposed connecting member of seat back is connected to another connecting member of seat cushion by operation of an automated connecting device of said second setting device, thereby forming a resulting seat.Type: GrantFiled: March 1, 1996Date of Patent: March 11, 1997Assignee: Tachi-S Co., Ltd.Inventor: Kenichi Seki