Patents by Inventor Hiroto Sugahara

Hiroto Sugahara 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: 20190280182
    Abstract: A method for manufacturing a piezoelectric actuator is disclosed that includes forming a vibration plate, forming a plurality of electrodes on the vibration plate, forming a piezoelectric layer on the electrodes, and forming a common electrode on the piezoelectric layer.
    Type: Application
    Filed: May 20, 2019
    Publication date: September 12, 2019
    Inventors: Hiroto Sugahara, Kazuo Kobayashi
  • Patent number: 10407752
    Abstract: A liquid-liquid extraction unit includes an extraction/separation tank (10) into which an aqueous phase in bubble form is admitted from an upper inlet (20) in one sidewall and an organic phase in bubble form is admitted from a lower inlet (30) in the one sidewall. The upward moving organic phase is contacted with the downward moving aqueous phase. After contact, the organic phase is discharged through an upper outlet (40) in an opposite sidewall and the aqueous phase is discharged through a lower outlet (50) in the opposite sidewall.
    Type: Grant
    Filed: June 28, 2016
    Date of Patent: September 10, 2019
    Assignee: SHIN-ETSU CHEMICAL CO., LTD.
    Inventors: Hiroto Sugahara, Takehisa Minowa
  • Patent number: 10340439
    Abstract: A method for manufacturing a piezoelectric actuator is disclosed that includes forming a vibration plate, forming a plurality of electrodes on the vibration plate, forming a piezoelectric layer on the electrodes, and forming a common electrode on the piezoelectric layer.
    Type: Grant
    Filed: March 4, 2016
    Date of Patent: July 2, 2019
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Hiroto Sugahara, Kazuo Kobayashi
  • Publication number: 20190159050
    Abstract: A radio terminal (2) is used in a radio communication system (100) and communicates with a radio station (1). The radio terminal (2) includes a measurement unit (20). The measurement unit (20) operates to perform, using a terminal measurement procedure for executing a first terminal measurement corresponding to radio access technology applied to the radio communication system (100), a second terminal measurement of a shared frequency shared by a plurality of radio systems including the radio communication system (100).
    Type: Application
    Filed: January 23, 2019
    Publication date: May 23, 2019
    Applicant: NEC Corporation
    Inventors: Hisashi FUTAKI, Hiroaki AMINAKA, Hiroto SUGAHARA, Yoshikazu KAKURA, Kazushi MURAOKA
  • Publication number: 20190100011
    Abstract: An ink-jet printer, including: an ink-jet head; and a head moving device for moving the head in a scanning direction, wherein the ink-jet head includes a first head unit having a first nozzle row from which first ink is ejected and a second nozzle row from which second ink that differs in color from the first ink is ejected, a second head unit disposed so as to be shifted from the first head unit in a nozzle arrangement direction by a distance less than a nozzle pitch, and a third head unit disposed between the first and second head units in the scanning direction so as to be shifted from the first head unit in the nozzle arrangement direction by a distance corresponding to a predetermined natural number multiple of the nozzle pitch, the third head unit having fifth and sixth nozzle rows from which the first ink is ejected.
    Type: Application
    Filed: December 3, 2018
    Publication date: April 4, 2019
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventor: Hiroto SUGAHARA
  • Patent number: 10237772
    Abstract: A radio terminal (2) is used in a radio communication system (100) and communicates with a radio station (1). The radio terminal (2) includes a measurement unit (20). The measurement unit (20) operates to perform, using a terminal measurement procedure for executing a first terminal measurement corresponding to radio access technology applied to the radio communication system (100), a second terminal measurement of a shared frequency shared by a plurality of radio systems including the radio communication system (100).
    Type: Grant
    Filed: April 27, 2018
    Date of Patent: March 19, 2019
    Assignee: NEC Corporation
    Inventors: Hisashi Futaki, Hiroaki Aminaka, Hiroto Sugahara, Yoshikazu Kakura, Kazushi Muraoka
  • Patent number: 10155386
    Abstract: An ink-jet printer, including: an ink-jet head; and a head moving device for moving the head in a scanning direction, wherein the ink-jet head includes a first head unit having a first nozzle row from which first ink is ejected and a second nozzle row from which second ink that differs in color from the first ink is ejected, a second head unit disposed so as to be shifted from the first head unit in a nozzle arrangement direction by a distance less than a nozzle pitch, and a third head unit disposed between the first and second head units in the scanning direction so as to be shifted from the first head unit in the nozzle arrangement direction by a distance corresponding to a predetermined natural number multiple of the nozzle pitch, the third head unit having fifth and sixth nozzle rows from which the first ink is ejected.
    Type: Grant
    Filed: December 7, 2017
    Date of Patent: December 18, 2018
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventor: Hiroto Sugahara
  • Publication number: 20180255545
    Abstract: A radio communication system includes a first base station that manages a first cell (110), a second base station (12) that manages a second cell (120), and a radio terminal (2). The radio terminal (2) supports dual connectivity involving a bearer split in which a first network bearer between the radio terminal (2) and a core network (3) is split over the first base station (11) and the second base station (12). The first base station (11) receives, from the second base station (12), bearer split status information about communication of the first network bearer in the second base station (12), and performs control of an access stratum related to the first network bearer. It is thus possible to contribute, for example, to an improvement in control of an access stratum when dual connectivity involving a bearer split is performed.
    Type: Application
    Filed: May 2, 2018
    Publication date: September 6, 2018
    Applicant: NEC Corporation
    Inventors: Hisashi FUTAKI, Hiroto SUGAHARA, Hiroaki AMINAKA
  • Publication number: 20180249357
    Abstract: In one embodiment, a radio terminal (2) is used in a radio communication system (100) and communicates with a radio station (1). The radio terminal (2) includes a measurement unit (20). The measurement unit (20) operates to perform, using a terminal measurement procedure for executing a first terminal measurement corresponding to radio access technology applied to the radio communication system (100), a second terminal measurement of a shared frequency shared by a plurality of radio systems including the radio communication system (100). This embodiment therefore contributes to simplification of a measurement function which should be supported by the radio terminal when the radio communication system uses a shared frequency (e.g., TVWS) shared by the plurality of radio systems.
    Type: Application
    Filed: April 27, 2018
    Publication date: August 30, 2018
    Applicant: NEC Corporation (c/o Hibiki IP Law Firm)
    Inventors: Hisashi FUTAKI, Hiroaki AMINAKA, Hiroto SUGAHARA, Yoshikazu KAKURA, Kazushi MURAOKA
  • Publication number: 20180213438
    Abstract: A transmitting terminal (1A) transmits first D2D control information (522, 523) in one or more subframes within a first subframe pool (511) within a first D2D control period (501) and performs data transmission (531-534) in accordance with the first D2D control information (522, 523) in one or more subframes within a second subframe pool (512) within the first D2D control period (501). The first D2D control information (522, 523) contains a second information element indicating whether the first D2D control information (522, 523) is valid in at least one D2D control period (502, 503) occurring after the first D2D control period (501). This makes it possible to contribute, for example, to reducing failure in reception of scheduling assignment information that is transmitted in a radio resource region for control in a periodic D2D control period and that specifies D2D transmission resources.
    Type: Application
    Filed: May 16, 2016
    Publication date: July 26, 2018
    Applicant: NEC Corporation
    Inventors: Kazushi MURAOKA, Hiroto SUGAHARA
  • Patent number: 10034189
    Abstract: A method and a radio parameter control system, as well as a network operation management apparatus and a radio station, are provided that enable optimization control for problems varying with sites of occurrence. Using location information at the time of measurement included in a measurement report from a radio terminal (30) located in a radio cell (C10), quality indicators based on measurement information acquired by the radio terminals or the radio station are compiled in association with areas (Ai), each of which is smaller than the radio cell (C10), and control of a radio parameter is performed in the radio cell or across a plurality of radio cells, based on a result of compilation of the quality indicators for each area.
    Type: Grant
    Filed: March 31, 2014
    Date of Patent: July 24, 2018
    Assignee: NEC Corporation
    Inventors: Hisashi Futaki, Hiroto Sugahara, Kosei Kobayashi, Yoshinori Watanabe
  • Patent number: 10028158
    Abstract: A radio terminal (2) is used in a radio communication system (100) and communicates with a radio station (1). The radio terminal (2) includes a measurement unit (20). The measurement unit (20) operates to perform, using a terminal measurement procedure for executing a first terminal measurement corresponding to radio access technology applied to the radio communication system (100), a second terminal measurement of a shared frequency shared by a plurality of radio systems including the radio communication system (100).
    Type: Grant
    Filed: August 4, 2017
    Date of Patent: July 17, 2018
    Assignee: NEC Corporation
    Inventors: Hisashi Futaki, Hiroaki Aminaka, Hiroto Sugahara, Yoshikazu Kakura, Kazushi Muraoka
  • Patent number: 9998937
    Abstract: A method and a device for estimating a communication load, as well as a radio station and an upper-level apparatus in a radio communication system, are provided that can estimate a communication load in a target network with high accuracy by using received quality information. A communication load estimation function (1) for estimating a communication load in a network (NW) estimates the communication load in the network by using at least a first quality indicator (Q1), which is a quality measurement value including entire received power, and a second quality indicator (Q2), which is a quality measurement value including the signal-to-noise-and-interference ratio of a reference signal.
    Type: Grant
    Filed: May 12, 2014
    Date of Patent: June 12, 2018
    Assignee: NEC Corporation
    Inventors: Hiroto Sugahara, Jun Shikida, Hiroaki Aminaka, Toshifumi Nakamura
  • Patent number: 9992812
    Abstract: A handover failure detection device (121) detects at least one of handover failure types regarding outgoing handover from a first cell (131) managed by a first base station (111) by observing: (a) presence/absence of reception by the first base station (111) of an acknowledgment response to a handover command regarding first handover of a mobile terminal (101) from the first cell (131) to a second cell (132) managed by a second base station (112); and (b) presence/absence of a request for connection re-establishment from the mobile terminal (101) to the first cell (131), the request occurring after initiation of the first handover. As a result, it contributes to improvement of handover failure detection or reduction of handover failure in a situation where exchange of information between base stations is restricted.
    Type: Grant
    Filed: November 14, 2013
    Date of Patent: June 5, 2018
    Assignee: NEC CORPORATION
    Inventors: Yoshinori Watanabe, Hiroto Sugahara, Yasuhiko Matsunaga, Yoshifumi Yanagisako
  • Publication number: 20180146500
    Abstract: A base station (2) is configured to schedule radio resources to device-to-device (D2D) transmissions (101A, 101B and 101C) performed by D2D communication pairs (3A, 3B and 3C) in accordance with an allocation rule that permits two D2D communication pairs (3A and 3C) that are not in proximity to each other to share an identical radio resource but prohibits two D2D communication pairs (3A and 3B) in proximity to each other from sharing an identical radio resource. Each D2D transmission (101) includes wirelessly transmitting from one radio terminal (1) directly to the other radio terminal (1) in each D2D communication pair (3) without passing through the base station (2). It is, thus, possible to enable efficient spatial reuse of radio resources in D2D transmissions performed by D2D communication pairs.
    Type: Application
    Filed: March 31, 2016
    Publication date: May 24, 2018
    Applicant: NEC Corporation
    Inventors: Kazushi MURAOKA, Hiroto SUGAHARA
  • Patent number: 9950538
    Abstract: A liquid ejecting head, including a flow-path unit that includes: first and second nozzle groups disposed alongside each other in a second direction orthogonal to a first direction in which nozzles are arranged; first and second common liquid chambers respectively communicating with the first and second nozzle groups, the first and second common liquid chambers being disposed alongside each other in the second direction; a liquid supply opening communicating with the first common liquid chamber and a liquid discharge opening communicating with the second common liquid chamber, on one side of the flow-path unit in the first direction; and a connecting path connecting the first and second common liquid chambers on the other side of the flow-path unit in the first direction, wherein the first common liquid chamber is disposed nearer to an outer periphery of the flow-path unit in the second direction than the second common liquid chamber.
    Type: Grant
    Filed: May 26, 2017
    Date of Patent: April 24, 2018
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Hiroto Sugahara, Shohei Koide, Taisuke Mizuno
  • Patent number: 9949144
    Abstract: A method and an apparatus for controlling a radio parameter, as well as a network operation management apparatus and a radio base station, are provided that enable optimization control taking a dead zone into consideration. A radio parameter control apparatus (10) for controlling a radio parameter of a radio base station (20) includes a measured data analysis section (101) that analyzes data measured by a plurality of radio terminals including a radio terminal in idle state to detect a dead zone in a radio cell, and a radio parameter control section (102) that controls the radio parameter of the radio base station based on information regarding the dead zone.
    Type: Grant
    Filed: March 28, 2014
    Date of Patent: April 17, 2018
    Assignee: NEC Corporation
    Inventors: Hiroto Sugahara, Hisashi Futaki, Kosei Kobayashi, Takamichi Inoue
  • Publication number: 20180093477
    Abstract: An ink-jet printer, including: an ink-jet head; and a head moving device for moving the head in a scanning direction, wherein the ink-jet head includes a first head unit having a first nozzle row from which first ink is ejected and a second nozzle row from which second ink that differs in color from the first ink is ejected, a second head unit disposed so as to be shifted from the first head unit in a nozzle arrangement direction by a distance less than a nozzle pitch, and a third head unit disposed between the first and second head units in the scanning direction so as to be shifted from the first head unit in the nozzle arrangement direction by a distance corresponding to a predetermined natural number multiple of the nozzle pitch, the third head unit having fifth and sixth nozzle rows from which the first ink is ejected.
    Type: Application
    Filed: December 7, 2017
    Publication date: April 5, 2018
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventor: Hiroto Sugahara
  • Publication number: 20180049260
    Abstract: A radio terminal (1) is configured to, in response to receiving a request from a network (100) when the radio terminal (1) can connect to the network (100), perform sidelink communication (102) with a second radio terminal (2), which is in a state of being unable to connect to the network (100), in accordance with a pre-configured first radio parameter (1008). The sidelink communication (102) includes at least one of direct discovery and direct communication. It is thus, for example, possible to contribute to improvement of sidelink communication in partial coverage.
    Type: Application
    Filed: November 18, 2015
    Publication date: February 15, 2018
    Inventors: Hiroaki AMINAKA, Hiroto SUGAHARA
  • Publication number: 20180049259
    Abstract: A radio terminal (1) receives a request and a radio configuration from a network (100) when the radio terminal (1) can connect to the network (100). The request requests transmission of the radio configuration. The radio configuration includes a radio parameter for sidelink communication (102) with a second radio terminal (2) which is in a state of being unable to connect to the network (100). The sidelink communication includes at least, one of direct discovery and direct communication. The radio terminal (1) is further configured to transmit the radio configuration in response to this request, and to perform the sidelink communication in accordance with the radio configuration with the second radio terminal (2) that has received the radio configuration. It is thus, for example, possible to contribute to improvement of the sidelink communication in the partial coverage.
    Type: Application
    Filed: November 18, 2015
    Publication date: February 15, 2018
    Inventors: Hiroaki AMINAKA, Hiroto SUGAHARA