Patents by Inventor Yasuaki Nakayama

Yasuaki Nakayama 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).

  • Publication number: 20240378521
    Abstract: A power grid planning support method and system. The method comprises steps of: (i) receiving an objective function, the objective function representing a quantity or parameter associated with a power grid; (ii) receiving one or more constraint functions, the or each constraint function representing constraints on the power grid, the objective function and constraint function(s) together representing a model of the power grid; (iii) receiving input data related to the power grid; (iv) executing an optimisation calculation defined by the model of the power grid and the input data; and (v) displaying a result of the optimisation calculation.
    Type: Application
    Filed: May 9, 2024
    Publication date: November 14, 2024
    Applicant: Hitachi, Ltd.
    Inventors: Shota OMI, Yasuaki NAKAYAMA, Naoki KAWAMOTO
  • Patent number: 12138926
    Abstract: A piezoelectric substrate includes: a substrate; a first electrode formed on the substrate; and a piezoelectric layer formed on the first electrode and containing potassium, sodium, and niobium. A full width at half maximum of an X-ray intensity peak on a plane (100) of the piezoelectric layer in a Psi axis-direction scan result of an X-ray diffraction measurement in which a surface of the piezoelectric layer is irradiated with X-rays at an angle of 54.74° from a direction perpendicular to the surface is more than 0° and 1.2° or less.
    Type: Grant
    Filed: December 21, 2022
    Date of Patent: November 12, 2024
    Assignee: Seiko Epson Corporation
    Inventors: Yasuaki Hamada, Tomohiro Sakai, Toshihiro Shimizu, Masao Nakayama
  • Publication number: 20240101572
    Abstract: The present invention provides a compound having a PLD inhibitory activity. The present invention provides a compound of the following structural formula, and the like, or a pharmaceutically acceptable salt thereof. wherein each symbol is as defined in the description.
    Type: Application
    Filed: June 15, 2023
    Publication date: March 28, 2024
    Inventors: Masahiro YOKOTA, Tetsudo KAYA, Makoto TORIZUKA, Yasuaki NAKAYAMA, Taku IKENOGAMI, Katsuya MAEDA, Kazuki OTAKE, Kentaro SAKURAI
  • Patent number: 11094432
    Abstract: A twisted pair cable includes a twisted portion in which two communication wires are twisted each other and an untwisted portion in which the two communication wires are untwisted. The terminal is connected to a tip part of the untwisted portion. A crimping member includes a barrel portion crimped to an end part of the twisted portion on the side of the untwisted portion and a non-crimping portion extending from the barrel portion toward the untwisted portion and not crimped to the twisted pair cable. The non-crimping portion includes a facing portion facing the two communication wires in the untwisted portion and rising portions rising from both end part in a direction orthogonal to a longitudinal direction of the untwisted portions in the facing portion. The rising portions surround the two communication wires together with the facing portion.
    Type: Grant
    Filed: September 10, 2020
    Date of Patent: August 17, 2021
    Assignee: SUMITOMO WIRING SYSTEMS, LTD.
    Inventors: Hiroyuki Oomori, Yasuaki Nakayama, Yuki Kondo, Yasuo Imai
  • Publication number: 20210090763
    Abstract: A twisted pair cable includes a twisted portion in which two communication wires are twisted each other and an untwisted portion in which the two communication wires are untwisted. The terminal is connected to a tip part of the untwisted portion. A crimping member includes a barrel portion crimped to an end part of the twisted portion on the side of the untwisted portion and a non-crimping portion extending from the barrel portion toward the untwisted portion and not crimped to the twisted pair cable. The non-crimping portion includes a facing portion facing the two communication wires in the untwisted portion and rising portions rising from both end part in a direction orthogonal to a longitudinal direction of the untwisted portions in the facing portion. The rising portions surround the two communication wires together with the facing portion.
    Type: Application
    Filed: September 10, 2020
    Publication date: March 25, 2021
    Inventors: Hiroyuki OOMORI, Yasuaki NAKAYAMA, Yuki KONDO, Yasuo IMAI
  • Patent number: 10355381
    Abstract: A board connector (10) includes a housing (20), fixing members (50) and a shield member (70). The housing (20) holds a terminal fitting (40). The fixing member (50) includes a housing fixing portion (51) to be fixed to the housing (20) and a board fixing portion (52) to be fixed to a circuit board (90) while being electrically connected to the circuit board (90). The shield member (70) includes mounting portions (75) to be mounted on the housing (75) and covering portions (77) for covering outer side surfaces of the fixing members (50) in a mounting direction of the mounting portions (75), and the covering portions (77) include contact portions (81) configured to come into contact with the outer side surfaces of the fixing members (50).
    Type: Grant
    Filed: April 18, 2017
    Date of Patent: July 16, 2019
    Assignee: Sumitomo Wiring Systems, Ltd.
    Inventors: Yoshiyuki Ishikawa, Yasuaki Nakayama, Kenji Makino, Masami Sakai
  • Patent number: 10312605
    Abstract: A terminal-equipped wire configured by crimping a pair of barrel pieces provided on a terminal to an external sheath of a wire, the external sheath being provided on an outer circumferential surface of a core wire. The pair of barrel pieces are wrapped around the external sheath into a polygonal tube shape that has a plurality of corner portions in a circumferential direction of the external sheath, leading end edges of the pair of barrel pieces are arranged on opposite sides of at least one corner portion out of the plurality of corner portions.
    Type: Grant
    Filed: February 10, 2017
    Date of Patent: June 4, 2019
    Assignees: AutoNetworks Technologies, Ltd., Sumitomo Wiring Systems, Ltd., SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Kazuaki Hamada, Kenji Miyamoto, Yasuaki Nakayama, Kenji Makino
  • Publication number: 20190013593
    Abstract: A terminal-equipped wire configured by crimping a pair of barrel pieces provided on a terminal to an external sheath of a wire, the external sheath being provided on an outer circumferential surface of a core wire. The pair of barrel pieces are wrapped around the external sheath into a polygonal tube shape that has a plurality of corner portions in a circumferential direction of the external sheath, leading end edges of the pair of barrel pieces are arranged on opposite sides of at least one corner portion out of the plurality of corner portions.
    Type: Application
    Filed: February 10, 2017
    Publication date: January 10, 2019
    Inventors: Kazuaki HAMADA, Kenji MIYAMOTO, Yasuaki NAKAYAMA, Kenji MAKINO
  • Publication number: 20170324176
    Abstract: A board connector (10) includes a housing (20), fixing members (50) and a shield member (70). The housing (20) holds a terminal fitting (40). The fixing member (50) includes a housing fixing portion (51) to be fixed to the housing (20) and a board fixing portion (52) to be fixed to a circuit board (90) while being electrically connected to the circuit board (90). The shield member (70) includes mounting portions (75) to be mounted on the housing (75) and covering portions (77) for covering outer side surfaces of the fixing members (50) in a mounting direction of the mounting portions (75), and the covering portions (77) include contact portions (81) configured to come into contact with the outer side surfaces of the fixing members (50).
    Type: Application
    Filed: April 18, 2017
    Publication date: November 9, 2017
    Inventors: Yoshiyuki Ishikawa, Yasuaki Nakayama, Kenji Makino, Masami Sakai
  • Patent number: 9787001
    Abstract: A terminal fitting includes a soldering portion (11) to which a conductor (91) of a wire (90) is to be soldered, solid solder (60) for soldering the conductor (91) to the soldering portion (11) in a solid state, and a holding portion (20) that holds the solid solder (60) until the solid solder (60) is melted and the conductor (91) is soldered. The conductor (91) is connected to the soldering portion (11) by melting the solid solder (60) held in the holding portion (20).
    Type: Grant
    Filed: February 13, 2015
    Date of Patent: October 10, 2017
    Assignee: SUMITOMO WIRING SYSTEMS, LTD.
    Inventor: Yasuaki Nakayama
  • Publication number: 20150229035
    Abstract: A terminal fitting includes a soldering portion (11) to which a conductor (91) of a wire (90) is to be soldered, solid solder (60) for soldering the conductor (91) to the soldering portion (11) in a solid state, and a holding portion (20) that holds the solid solder (60) until the solid solder (60) is melted and the conductor (91) is soldered. The conductor (91) is connected to the soldering portion (11) by melting the solid solder (60) held in the holding portion (20).
    Type: Application
    Filed: February 13, 2015
    Publication date: August 13, 2015
    Inventor: Yasuaki Nakayama
  • Patent number: 8896261
    Abstract: The excitation overcurrent detection unit for the doubly-fed electric machine is provided with a function to determine an excitation current magnitude relationship among three phases. The firing pulse is held to on-state or off-state to cause the largest-current phase and the second-largest-current phase to charge the DC capacitor by the operation of diodes. The conduction ratio of the third-largest-current phase or minimum current phase is controlled according to the detected current value to protect against a possible short-circuit across the DC capacitor. When the voltage of the DC capacitor exceeds a preset value, the voltage is suppressed by operating active or passive power devices.
    Type: Grant
    Filed: March 15, 2012
    Date of Patent: November 25, 2014
    Assignee: Hitachi, Ltd.
    Inventors: Akira Bando, Masaya Ichinose, Yasuhiro Kiyofuji, Yasuaki Nakayama
  • Publication number: 20130241463
    Abstract: The excitation overcurrent detection unit for the doubly-fed electric machine is provided with a function to determine an excitation current magnitude relationship among three phases. The firing pulse is held to on-state or off-state to cause the largest-current phase and the second-largest-current phase to charge the DC capacitor by the operation of diodes. The conduction ratio of the third-largest-current phase or minimum current phase is controlled according to the detected current value to protect against a possible short-circuit across the DC capacitor. When the voltage of the DC capacitor exceeds a preset value, the voltage is suppressed by operating active or passive power devices.
    Type: Application
    Filed: March 15, 2012
    Publication date: September 19, 2013
    Applicant: Hitachi, Ltd
    Inventors: Akira Bando, Masaya Ichinose, Yasuhiro Kiyofuji, Yasuaki Nakayama
  • Patent number: 8502404
    Abstract: A wind power generating system includes a unit for eliminating harmonics component of specified-order from inputted current detection value of a grid-side converter and a unit for controlling the grid-side converter using the current detection value in which harmonics are eliminated.
    Type: Grant
    Filed: August 20, 2010
    Date of Patent: August 6, 2013
    Assignee: Hitachi, Ltd.
    Inventors: Yasuaki Nakayama, Masaya Ichinose, Mitsugu Matsutake
  • Patent number: 8241077
    Abstract: A terminal fitting includes: a body portion having a space for inserting a tab of a mating terminal therein; an elastic contact piece provided to face the space, having a configuration as to be extended like a cantilever in a direction of an insertion and pull-out of the tab with respect to the space through a wall-shaped portion constituting the body portion, and having a contact portion to come in contact with the tab; and an elastic reinforcing piece provided on an opposite side to the space with the elastic contact piece interposed therebetween, having a configuration as to be extended like a cantilever in the direction of the insertion and pull-out of the tab from the wall-shaped portion constituting the body portion, and causing an extended end to correspond to a displaced region in an elastic flexure in the elastic contact piece.
    Type: Grant
    Filed: March 1, 2011
    Date of Patent: August 14, 2012
    Assignees: Sumitomo Wiring Systems, Ltd., Honda Motor Co., Ltd.
    Inventors: Masakazu Suzuki, Yasuaki Nakayama, Yohei Kugumiya, Kazuyuki Iwashita, Hirotomi Nemoto
  • Publication number: 20110212656
    Abstract: A terminal fitting includes: a body portion having a space for inserting a tab of a mating terminal therein; an elastic contact piece provided to face the space, having a configuration as to be extended like a cantilever in a direction of an insertion and pull-out of the tab with respect to the space through a wall-shaped portion constituting the body portion, and having a contact portion to come in contact with the tab; and an elastic reinforcing piece provided on an opposite side to the space with the elastic contact piece interposed therebetween, having a configuration as to be extended like a cantilever in the direction of the insertion and pull-out of the tab from the wall-shaped portion constituting the body portion, and causing an extended end to correspond to a displaced region in an elastic flexure in the elastic contact piece.
    Type: Application
    Filed: March 1, 2011
    Publication date: September 1, 2011
    Applicants: SUMITOMO WIRING SYSTEMS, LTD., HONDA MOTOR CO., LTD.
    Inventors: Masakazu Suzuki, Yasuaki Nakayama, Yohei Kugumiya, Kazuyuki Iwashita, Hirotomi Nemoto
  • Patent number: 7997916
    Abstract: A rubber plug (40) is provided with a stable sealing property while reducing frictional resistance when the rubber plug (40) is inserted into a cavity. In a cross section including axis lines of the rubber plug (40), a cavity (11) and a wire (30), areas of outer lips (44A, 44B) not resiliently deformed radially outward of a virtual line (12L) corresponding to the inner circumferential surface of the cavity (11) are specified as outer virtual deforming portions (45A, 45B), areas of inner lips (46A, 46B and 46C) not resiliently deformed radially inward of a virtual line (31L) corresponding to the outer circumferential surface of the wire (30) are specified as inner virtual deforming portions (47A, 47B, and 47C) and at least parts of the inner virtual deforming portions (47A, 47B and 47C) correspond to only parts of the outer virtual deforming portions (45A, 45B).
    Type: Grant
    Filed: April 1, 2010
    Date of Patent: August 16, 2011
    Assignee: Sumitomo Wiring Systems, Ltd.
    Inventors: Chikahiro Yoshioka, Yasuaki Nakayama
  • Publication number: 20110074365
    Abstract: A wind power generating system includes a unit for eliminating harmonics component of specified-order from inputted current detection value of a grid-side converter and a unit for controlling the grid-side converter using the current detection value in which harmonics are eliminated.
    Type: Application
    Filed: August 20, 2010
    Publication date: March 31, 2011
    Inventors: Yasuaki NAKAYAMA, Masaya Ichinose, Mitsugu Matsutake
  • Publication number: 20100255703
    Abstract: A rubber plug (40) is provided with a stable sealing property while reducing frictional resistance when the rubber plug (40) is inserted into a cavity. In a cross section including axis lines of the rubber plug (40), a cavity (11) and a wire (30), areas of outer lips (44A, 44B) not resiliently deformed radially outward of a virtual line (12L) corresponding to the inner circumferential surface of the cavity (11) are specified as outer virtual deforming portions (45A, 45B), areas of inner lips (46A, 46B and 46C) not resiliently deformed radially inward of a virtual line (31L) corresponding to the outer circumferential surface of the wire (30) are specified as inner virtual deforming portions (47A, 47B, and 47C) and at least parts of the inner virtual deforming portions (47A, 47B and 47C) correspond to only parts of the outer virtual deforming portions (45A, 45B).
    Type: Application
    Filed: April 1, 2010
    Publication date: October 7, 2010
    Applicant: SUMITOMO WIRING SYSTEMS, LTD.
    Inventors: Chikahiro Yoshioka, Yasuaki Nakayama
  • Publication number: 20090133221
    Abstract: A case, a coil spring, a sliding disc and a rotational disc are contained, and the following construction is equipped. The case has a positioning recess portion on the inner wall thereof. On the peripheral surface of the sliding disc is provided a projecting portion which is engaged with the positioning recess portion of the case to suppress the rotation thereof with respect to the case. One end face of the sliding disc and one end face of the rotational disc are confronted to each other, and cam portions which are engaged with or separated from each other in connection with the rotation of the rotational disc are formed on both the confronting end faces. The cam portion formed on the sliding disc projects to the outside of the outer peripheral surface of the sliding disc.
    Type: Application
    Filed: July 6, 2006
    Publication date: May 28, 2009
    Applicant: CITIZEN HOLDINGS CO., LTD.
    Inventors: Yasuaki Nakayama, Katsuhiko Ikai