Patents by Inventor Keiichi Nakamura

Keiichi Nakamura 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).

  • Patent number: 11121926
    Abstract: A management apparatus includes a memory and a processor coupled to the memory. The processor is configured to execute a grouping process that includes a collection process which collect information from each of a plurality of devices based on a history of communication processes executed with another device of the plurality of devices and store the information in the memory, execute a creation process which create a group by correctively combining one or more pairs of communication source and communication destination devices in which communication processes of a same type were executed at a same time interval based on the information collected in the collection process and output display information for displaying information of the devices included in the group created by the grouping process.
    Type: Grant
    Filed: November 23, 2020
    Date of Patent: September 14, 2021
    Assignee: FUJITSU LIMITED
    Inventors: Keiichi Ohmachi, Takayuki Nakamura
  • Patent number: 11121500
    Abstract: A connector that includes a male connector; and a female connector including a housing to be fit to the male connector along a connecting direction, wherein: a first connector of the male connector and the female connector is fixed with a second connector of the male connector and the female connector connected and, a rigidity k [N/m] satisfies k<360000 when the second connector is distorted at a test speed of 1 mm/min in a direction intersecting the connecting direction and satisfies k?(2.0×107)×m, where m [kg] denotes a mass of the second connector.
    Type: Grant
    Filed: June 26, 2018
    Date of Patent: September 14, 2021
    Assignees: AUTONETWORKS TECHNOLOGIES, LTD., SUMITOMO WIRING SYSTEMS, LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Takeshi Masuda, Tomoyuki Sakata, Hiromu Otani, Takehide Terasawa, Keiichi Nakamura, Takahiko Saitou
  • Publication number: 20210267669
    Abstract: In a method for treating gastroesophageal reflux disease, an insertion portion of an endoscope is inserted from a cardia into a stomach. A distal end portion can be bent to position a cardiac region and a cautery unit in a field of view of an observation mechanism. The cautery unit can be brought into contact with a first region of a stomach wall around the cardia to cauterize the first region without removing a mucosal layer thereof while the cautery unit and a proximal portion of the insertion portion proximal of the bend are separated from each other by a predetermined distance or more. A position of the cautery unit with respect to the stomach wall can be changed while the separation state is maintained to bring the cautery unit into contact with and cauterize a second region of the stomach wall without removing a mucosal layer thereof.
    Type: Application
    Filed: February 28, 2020
    Publication date: September 2, 2021
    Applicant: OLYMPUS CORPORATION
    Inventors: Nobuko MATSUO, Keiichi SATO, Yoshisane NAKAMURA
  • Publication number: 20210151932
    Abstract: A connector that includes a male connector; and a female connector including a housing to be fit to the male connector along a connecting direction, wherein: a first connector of the male connector and the female connector is fixed with a second connector of the male connector and the female connector connected and, a rigidity k [N/m] satisfies k<360000 when the second connector is distorted at a test speed of 1 mm/min in a direction intersecting the connecting direction and satisfies k?(2.0×107)×m, where m [kg] denotes a mass of the second connector.
    Type: Application
    Filed: June 26, 2018
    Publication date: May 20, 2021
    Applicants: AUTONETWORKS TECHNOLOGIES, LTD., SUMITOMO WIRING SYSTEMS, LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Takeshi MASUDA, Tomoyuki SAKATA, Hiromu OTANI, Takehide TERASAWA, Keiichi NAKAMURA, Takahiko SAITOU
  • Publication number: 20210122244
    Abstract: A power supply system includes a first circuit, a second circuit and a voltage controller. The first circuit includes a first power supply line connected to each of a first load, a power supply source, and a first battery. The second circuit includes a second power supply line connected to a second load and a second battery connected to the second power supply line. The voltage controller includes a DC-DC converter connected between the first power supply line and the second power supply line. The second load is able to perform a function that substitutes for at least part of a function that the first load performs. The voltage controller includes a converter control unit configured to control the DC-DC converter such that an output voltage higher than or equal to a voltage of the second battery is output to the second power supply line.
    Type: Application
    Filed: January 5, 2021
    Publication date: April 29, 2021
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Keiichi NAKAMURA
  • Patent number: 10913356
    Abstract: A power supply system includes a first circuit, a second circuit and a voltage controller. The first circuit includes a first power supply line connected to each of a first load, a power supply source, and a first battery. The second circuit includes a second power supply line connected to a second load and a second battery connected to the second power supply line. The voltage controller includes a DC-DC converter connected between the first power supply line and the second power supply line. The second load is able to perform a function that substitutes for at least part of a function that the first load performs. The voltage controller includes a converter control unit configured to control the DC-DC converter such that an output voltage higher than or equal to a voltage of the second battery is output to the second power supply line.
    Type: Grant
    Filed: January 29, 2018
    Date of Patent: February 9, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Keiichi Nakamura
  • Publication number: 20200290889
    Abstract: A method for producing a vanadate extracts a vanadium component included in combustion fly ash or clinker. In the method, a vanadium component is recovered as a vanadate from combustion fly ash or clinker, the method including the following steps 1 to 5: (1) a step of adding an aqueous sodium hydroxide solution to combustion fly ash or clinker so that the water content is 5 to 35% by mass (step 1); (2) a step of mixing or kneading (step 2); (3) a step of heating the mixed or kneaded mixture (step 3); (4) a step of adding water to the mixture that has undergone the heating step in the step 3 to form a slurry (step 4); and (5) a step of recovering a vanadate in the aqueous phase after the solid-liquid separation of the slurry (step 5).
    Type: Application
    Filed: November 22, 2018
    Publication date: September 17, 2020
    Applicant: SHOWA DENKO K.K.
    Inventors: Junichi AKIYAMA, Keiichi NAKAMURA
  • Publication number: 20200219755
    Abstract: A wafer mounting table includes a first electrode and a second electrode buried inside of a ceramic substrate having a wafer mounting surface so as to be parallel to the wafer mounting surface with the first electrode closer to the wafer mounting surface than the second electrode. The wafer mounting table includes a conductive section that electrically conducts the first electrode and the second electrode. The conductive section is such that a plurality of circular members comprised of plate-shaped metal meshes parallel to the wafer mounting surface are stacked between the first electrode and the second electrode.
    Type: Application
    Filed: February 24, 2020
    Publication date: July 9, 2020
    Applicant: NGK INSULATORS, LTD.
    Inventors: Yuji AKATSUKA, Masaki ISHIKAWA, Kazuhiro NOBORI, Akiyoshi HATTORI, Keiichi NAKAMURA
  • Patent number: 10620757
    Abstract: An input device includes a casing having a recess in its inner surface, and a pressure-sensitive sensor disposed in the recess. The pressure-sensitive sensor is fixed in the recess so that a sensing surface of the pressure-sensitive sensor and a bottom surface of the recess are in contact with each other.
    Type: Grant
    Filed: January 26, 2016
    Date of Patent: April 14, 2020
    Assignee: Sony Corporation
    Inventors: Yoshiteru Taka, Takeshi Koizumi, Tomoki Kawabata, Munetake Ebihara, Tatsuya Nakazawa, Machiko Endo, Takuya Goto, Keiichi Nakamura, Yukio Sakakibara
  • Patent number: 10344627
    Abstract: According to the embodiment of the present invention, there are provided a first stage auxiliary burner configured to heat up the exhaust gas in the upstream side of the superheater, a second stage auxiliary burner configured to heat up the exhaust gas in the upstream side of the evaporator, a fuel supply system configured to distribute fuel so as to be supplied to the first stage auxiliary burner and the second stage auxiliary burner. Distribution of fuel charged to each of the first stage auxiliary burner and the second stage auxiliary burner is controlled in accordance with a predetermined distribution ratio of each charging quantity to whole charging quantity in all the range thereof.
    Type: Grant
    Filed: January 17, 2018
    Date of Patent: July 9, 2019
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Keiichi Nakamura, Hideaki Shimada
  • Publication number: 20190025545
    Abstract: A zoom lens comprises, in order from an object: a first lens group (G1) having positive refractive power; a second lens group (G2) having negative refractive power; a third lens group (G3) having positive refractive power; a fourth lens group (G4) having negative refractive power; and a fifth lens group (G5) having positive refractive power, in which the first to the fifth lens groups (G1 to G5) each move in an optical axis direction upon zooming from a wide angle end state to a telephoto end state, at least a part of the fourth lens group (G4) is configured to serve as a focusing lens group to move in the optical axis direction upon focusing, the first lens group (G1) consists of two lenses, and the following conditional expression is satisfied. 0.30<GD3/ft<0.8 where, GD3 denotes a thickness of the third lens group (G3) on the optical axis, and ft denotes a focal length of the zoom lens in the telephoto end state.
    Type: Application
    Filed: September 30, 2016
    Publication date: January 24, 2019
    Inventor: Keiichi NAKAMURA
  • Patent number: 10101568
    Abstract: A zoom lens includes, in order from the object side: a first lens group (G1) having positive refractive power, a second lens group (G2) having negative refractive power, a third lens group (G3) having positive refractive power, and a fourth lens group (G4) having positive refractive power. Upon zooming from the wide angle end state to the telephoto end state, the interval between each lens group changes and the fourth lens group (G4) moves to the image side after having once moved to the object side. The third lens group (G3) has, in order from the object side, a positive lens, a positive lens, and a negative lens. The zoom lens satisfies the following conditional expression: 2.50<TLt/(fw*ft)1/2<3.30, where TLt is the total length of the zoom lens in the telephoto state, fw is the focal distance of the total zoom lens system in the wide angle state, and ft is the focal distance of the total zoom lens system in the telephoto state.
    Type: Grant
    Filed: June 26, 2014
    Date of Patent: October 16, 2018
    Assignee: Nikon Corporation
    Inventor: Keiichi Nakamura
  • Patent number: 10087786
    Abstract: In one embodiment, a combined cycle power plant includes first and second superheaters to generate first and second main steams, first and second reheaters to heat first and second discharge steams to generate first and second reheat steams, and a steam turbine to be supplied with the merged first and second reheat steams. The plant further includes a first valve to adjust a flow rate of the first discharge or reheat steam, and a second valve to adjust a flow rate of the second discharge or reheat steam. A plant control apparatus includes a determination module to determine a target opening degree of the second valve by using flow rates of the first and second main steams, and a controller to compare the determined target opening degree with a valve opening degree of the second valve and to control the second valve based on a comparison result.
    Type: Grant
    Filed: September 2, 2015
    Date of Patent: October 2, 2018
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Hikaru Kiga, Masayuki Tobo, Toyohiro Akebi, Keiichi Nakamura
  • Publication number: 20180219407
    Abstract: A power supply system includes a first circuit, a second circuit and a voltage controller. The first circuit includes a first power supply line connected to each of a first load, a power supply source, and a first battery. The second circuit includes a second power supply line connected to a second load and a second battery connected to the second power supply line. The voltage controller includes a DC-DC converter connected between the first power supply line and the second power supply line. The second load is able to perform a function that substitutes for at least part of a function that the first load performs. The voltage controller includes a converter control unit configured to control the DC-DC converter such that an output voltage higher than or equal to a voltage of the second battery is output to the second power supply line.
    Type: Application
    Filed: January 29, 2018
    Publication date: August 2, 2018
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Keiichi NAKAMURA
  • Publication number: 20180142580
    Abstract: According to the embodiment of the present invention, there are provided a first stage auxiliary burner configured to heat up the exhaust gas in the upstream side of the superheater, a second stage auxiliary burner configured to heat up the exhaust gas in the upstream side of the evaporator, a fuel supply system configured to distribute fuel so as to be supplied to the first stage auxiliary burner and the second stage auxiliary burner. Distribution of fuel charged to each of the first stage auxiliary burner and the second stage auxiliary burner is controlled in accordance with a predetermined distribution ratio of each charging quantity to whole charging quantity in all the range thereof.
    Type: Application
    Filed: January 17, 2018
    Publication date: May 24, 2018
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Keiichi NAKAMURA, Hideaki SHIMADA
  • Publication number: 20180039353
    Abstract: An input device includes a casing having a recess in its inner surface, and a pressure-sensitive sensor disposed in the recess. The pressure-sensitive sensor is fixed in the recess so that a sensing surface of the pressure-sensitive sensor and a bottom surface of the recess are in contact with each other.
    Type: Application
    Filed: January 26, 2016
    Publication date: February 8, 2018
    Applicant: Sony Corporation
    Inventors: Yoshiteru Taka, Takeshi Koizumi, Tomoki Kawabata, Munetake Ebihara, Tatsuya Nakazawa, Machiko Endo, Takuya Goto, Keiichi Nakamura, Yukio Sakakibara
  • Patent number: 9719617
    Abstract: In a threaded joint for steel pipes comprising a pin (1) and a box (2), each having a threaded portion (11 or 21), a sealing surface (13 or 23), and a shoulder surface (14, 15 or 24, 25), the sealing surface (13) of the pin (1) is formed by a tapered surface, and the sealing surface (23) of the box (2) is formed by a first curved surface portion with a large radius of curvature in the range of 15-120 mm, a tapered surface portion, and a second curved surface portion with a large radius of curvature again in the range of 15-120 mm.
    Type: Grant
    Filed: April 18, 2011
    Date of Patent: August 1, 2017
    Assignees: NIPPON STEEL & SUMITOMO METAL CORPORATION, VALLOUREC OIL AND GAS FRANCE
    Inventors: Takashi Okada, Keiichi Nakamura, Masaaki Sugino, Suguru Yamaguchi
  • Patent number: 9605781
    Abstract: A threaded tubular connection includes a female threaded portion at a first tubular component end and a male threaded portion at a second tubular component end, the female threaded portion including a female thread, at least one female sealing surface on its inner peripheral surface, and at least one female axial abutment surface, the male threaded portion including a male thread, at least one male sealing surface on its outer peripheral surface, at least one axial abutment surface, and a lip disposed between the sealing surface and an axial abutment surface located at a free end of the threaded portion distant from the thread, the male thread being made up into the female thread such that at least one male axial abutment surface is in contact with at least one female axial abutment surface, at least one male sealing surface being in interference contact with at least one corresponding female sealing surface, the portion of the lip between the sealing surface and the axial abutment surface being radially dist
    Type: Grant
    Filed: November 3, 2008
    Date of Patent: March 28, 2017
    Assignees: VALLOUREC OIL AND GAS FRANCE, NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Sylvain Beigneux, Daly Daly, Bertrand Maillon, Claire Patureau, Eric Verger, Michihiko Iwamoto, Keiichi Nakamura, Masaaki Sugino, Suguru Yamaguchi
  • Patent number: 9568125
    Abstract: A threaded joint for steel pipes comprising a pin (1) and a box (2). The pin has a male thread (11) and a lip (12) which comprises (i) a sealing surface (13) and (ii) a nose portion (16) provided with a shoulder surface. The box has a female thread (21), a sealing surface (23) and a shoulder surface. The shoulder surface of the pin comprises two distinct adjacent surfaces, main shoulder (14) in the inner side and sub shoulder (15) in the outer side. Correspondingly, the shoulder surface of the box comprises two distinct adjacent surfaces, main shoulder (24) in the inner side and sub shoulder (25) in the outer side. The main shoulder surfaces of the pin and box are disposed such as to prevent a radially inward deformation of the lip end, and the sub shoulder surfaces of pin and box are disposed such as to limit a radially outward deformation of the lip end.
    Type: Grant
    Filed: May 6, 2010
    Date of Patent: February 14, 2017
    Assignees: NIPPON STEEL & SUMITOMO METAL CORPORATION, VALLOUREC OIL AND GAS FRANCE
    Inventors: Suguru Yamaguchi, Keiichi Nakamura, Masaaki Sugino, Michihiko Iwamoto, Gabriel Briquet, Claire Patureau, Daly Daly, Bertrand Maillon, Sylvain Beigneux
  • Patent number: 9528396
    Abstract: An auxiliary burner configured to heat exhaust gas on an upstream side of any one of heat exchangers, and a fuel supply system configured to supply fuel to the auxiliary burner. To avoid damage of a heat-transfer pipe by exhaust gas of high temperature, a reference value on which the restriction on the charging quantity to be supplied to the auxiliary burner is based is set, and the charging quantity of fuel to the auxiliary burner is restricted so as not to exceed a limit defined by the reference value.
    Type: Grant
    Filed: March 26, 2012
    Date of Patent: December 27, 2016
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Keiichi Nakamura, Hideaki Shimada