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).
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Publication number: 20240378521Abstract: 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: ApplicationFiled: May 9, 2024Publication date: November 14, 2024Applicant: Hitachi, Ltd.Inventors: Shota OMI, Yasuaki NAKAYAMA, Naoki KAWAMOTO
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Patent number: 12138926Abstract: 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: GrantFiled: December 21, 2022Date of Patent: November 12, 2024Assignee: Seiko Epson CorporationInventors: Yasuaki Hamada, Tomohiro Sakai, Toshihiro Shimizu, Masao Nakayama
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Publication number: 20240101572Abstract: 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: ApplicationFiled: June 15, 2023Publication date: March 28, 2024Inventors: Masahiro YOKOTA, Tetsudo KAYA, Makoto TORIZUKA, Yasuaki NAKAYAMA, Taku IKENOGAMI, Katsuya MAEDA, Kazuki OTAKE, Kentaro SAKURAI
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Patent number: 11094432Abstract: 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: GrantFiled: September 10, 2020Date of Patent: August 17, 2021Assignee: SUMITOMO WIRING SYSTEMS, LTD.Inventors: Hiroyuki Oomori, Yasuaki Nakayama, Yuki Kondo, Yasuo Imai
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Publication number: 20210090763Abstract: 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: ApplicationFiled: September 10, 2020Publication date: March 25, 2021Inventors: Hiroyuki OOMORI, Yasuaki NAKAYAMA, Yuki KONDO, Yasuo IMAI
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Patent number: 10355381Abstract: 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: GrantFiled: April 18, 2017Date of Patent: July 16, 2019Assignee: Sumitomo Wiring Systems, Ltd.Inventors: Yoshiyuki Ishikawa, Yasuaki Nakayama, Kenji Makino, Masami Sakai
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Patent number: 10312605Abstract: 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: GrantFiled: February 10, 2017Date of Patent: June 4, 2019Assignees: AutoNetworks Technologies, Ltd., Sumitomo Wiring Systems, Ltd., SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Kazuaki Hamada, Kenji Miyamoto, Yasuaki Nakayama, Kenji Makino
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Publication number: 20190013593Abstract: 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: ApplicationFiled: February 10, 2017Publication date: January 10, 2019Inventors: Kazuaki HAMADA, Kenji MIYAMOTO, Yasuaki NAKAYAMA, Kenji MAKINO
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Publication number: 20170324176Abstract: 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: ApplicationFiled: April 18, 2017Publication date: November 9, 2017Inventors: Yoshiyuki Ishikawa, Yasuaki Nakayama, Kenji Makino, Masami Sakai
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Patent number: 9787001Abstract: 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: GrantFiled: February 13, 2015Date of Patent: October 10, 2017Assignee: SUMITOMO WIRING SYSTEMS, LTD.Inventor: Yasuaki Nakayama
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Publication number: 20150229035Abstract: 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: ApplicationFiled: February 13, 2015Publication date: August 13, 2015Inventor: Yasuaki Nakayama
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Patent number: 8896261Abstract: 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: GrantFiled: March 15, 2012Date of Patent: November 25, 2014Assignee: Hitachi, Ltd.Inventors: Akira Bando, Masaya Ichinose, Yasuhiro Kiyofuji, Yasuaki Nakayama
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Publication number: 20130241463Abstract: 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: ApplicationFiled: March 15, 2012Publication date: September 19, 2013Applicant: Hitachi, LtdInventors: Akira Bando, Masaya Ichinose, Yasuhiro Kiyofuji, Yasuaki Nakayama
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Patent number: 8502404Abstract: 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: GrantFiled: August 20, 2010Date of Patent: August 6, 2013Assignee: Hitachi, Ltd.Inventors: Yasuaki Nakayama, Masaya Ichinose, Mitsugu Matsutake
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Patent number: 8241077Abstract: 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: GrantFiled: March 1, 2011Date of Patent: August 14, 2012Assignees: Sumitomo Wiring Systems, Ltd., Honda Motor Co., Ltd.Inventors: Masakazu Suzuki, Yasuaki Nakayama, Yohei Kugumiya, Kazuyuki Iwashita, Hirotomi Nemoto
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Publication number: 20110212656Abstract: 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: ApplicationFiled: March 1, 2011Publication date: September 1, 2011Applicants: SUMITOMO WIRING SYSTEMS, LTD., HONDA MOTOR CO., LTD.Inventors: Masakazu Suzuki, Yasuaki Nakayama, Yohei Kugumiya, Kazuyuki Iwashita, Hirotomi Nemoto
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Patent number: 7997916Abstract: 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: GrantFiled: April 1, 2010Date of Patent: August 16, 2011Assignee: Sumitomo Wiring Systems, Ltd.Inventors: Chikahiro Yoshioka, Yasuaki Nakayama
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Publication number: 20110074365Abstract: 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: ApplicationFiled: August 20, 2010Publication date: March 31, 2011Inventors: Yasuaki NAKAYAMA, Masaya Ichinose, Mitsugu Matsutake
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Publication number: 20100255703Abstract: 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: ApplicationFiled: April 1, 2010Publication date: October 7, 2010Applicant: SUMITOMO WIRING SYSTEMS, LTD.Inventors: Chikahiro Yoshioka, Yasuaki Nakayama
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Publication number: 20090133221Abstract: 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: ApplicationFiled: July 6, 2006Publication date: May 28, 2009Applicant: CITIZEN HOLDINGS CO., LTD.Inventors: Yasuaki Nakayama, Katsuhiko Ikai