Patents by Inventor Satoshi Okuyama

Satoshi Okuyama 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: 20210028371
    Abstract: A novel light-emitting device is provided. A light-emitting device with high emission efficiency is provided. A light-emitting device having a long lifetime is provided. A light-emitting device with low driving voltage is provided. The light-emitting device includes an anode, a cathode, and an EL layer between the anode and the cathode. The EL layer includes a light-emitting layer and an electron-transport layer. The electron-transport layer is positioned between the light-emitting layer and the cathode. The electron-transport layer contains an electron-transport material. The electron-transport material is an organic compound including a first skeleton, a second skeleton, and a third skeleton. The first skeleton has a function of transporting electrons. The second skeleton has a function of accepting holes. The third skeleton includes a monocyclic ?-electron deficient heteroaromatic ring.
    Type: Application
    Filed: July 24, 2020
    Publication date: January 28, 2021
    Inventors: Takumu OKUYAMA, Naoaki HASHIMOTO, Yusuke TAKITA, Hiroshi KADOMA, Tsunenori SUZUKI, Satoshi SEO, Tomoya HIROSE
  • Publication number: 20210022153
    Abstract: Deterioration in communication characteristics is prevented by performing scheduling in which movement/stillness of user terminals is taken into consideration. Received-power measurement section 103 measures the power of a reference signal from each of the user terminals. Movement/stillness determination section 104 determines whether each of the user terminals is a moving terminal or an unmoving terminal based on over-time variations in received power at transmission points for each of the user terminals. Group selection section 105 groups the user terminals into a moving terminal group and an unmoving terminal group, and selects one of the groups as a signal-transmission target. Transmission control section 108 performs open-loop signal processing without precoding when the moving terminal group is selected, or performs closed-loop signal processing with precoding when the unmoving terminal group is selected.
    Type: Application
    Filed: March 22, 2019
    Publication date: January 21, 2021
    Applicant: NTT DOCOMO, INC.
    Inventors: Tatsuki Okuyama, Satoshi Suyama, Yukihiko Okumura
  • Publication number: 20210009518
    Abstract: An organic compound with high heat resistance is provided. A light-emitting device with high emission efficiency and high reliability is provided. An organic compound represented by General Formula (G0) is provided. In General Formula (G0), any one of R1 to R5 represents General Formula (A), and each of the others of R1 to R5, R6 to R13, R21 to R29, R31 to R39, and R41 to R48 independently represents hydrogen, an alkyl group having 1 to 6 carbon atoms, a cycloalkyl group having 3 to 6 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 13 carbon atoms. R21 and R22 may be bonded to each other to form a spiro ring.
    Type: Application
    Filed: July 9, 2020
    Publication date: January 14, 2021
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Anna TADA, Sachiko KAWAKAMI, Takumu OKUYAMA, Tsunenori SUZUKI, Satoshi SEO
  • Patent number: 10873890
    Abstract: The present disclosure aims to provide a base station, a radio relay station, a communication method, and a program capable of preventing communication from being unavailable when the base station is brought into a high load condition. A base station (10) configured to communicate with a communication terminal (30) through a radio relay station (20), the base station (10) including: a control unit (11) configured to detect whether the own apparatus is in an overload condition exceeding a predetermined load; and a communication unit (12) configured to transmit, in order to cause the radio relay station (20) to connect to another base station that is not in an overload condition, information about the other base station to the radio relay station (20) when the control unit (11) detects that the own apparatus is in an overload condition.
    Type: Grant
    Filed: January 23, 2018
    Date of Patent: December 22, 2020
    Assignee: NEC CORPORATION
    Inventors: Akira Kamei, Toru Yamada, Masahiro Serizawa, Kyoji Hirata, Yumiko Okuyama, Masashi Shimoma, Satoshi Hasegawa
  • Patent number: 10873874
    Abstract: The present disclosure aims to provide a base station, a radio relay station, a communication method, and a program capable of preventing communication from being unavailable when the base station is brought into a high load condition. A base station (10) configured to communicate with a communication terminal (30) through a radio relay station (20), the base station (10) including: a control unit (11) configured to detect whether the own apparatus is in an overload condition exceeding a predetermined load; and a communication unit (12) configured to transmit, in order to cause the radio relay station (20) to connect to another base station that is not in an overload condition, information about the other base station to the radio relay station (20) when the control unit (11) detects that the own apparatus is in an overload condition.
    Type: Grant
    Filed: January 24, 2018
    Date of Patent: December 22, 2020
    Assignee: NEC CORPORATION
    Inventors: Akira Kamei, Toru Yamada, Kyoji Hirata, Masahiro Serizawa, Yumiko Okuyama, Masashi Shimoma, Satoshi Hasegawa
  • Patent number: 10861709
    Abstract: Provided is a method of evaluating the impurity gettering capability of an epitaxial silicon wafer, which allows for very precise evaluation of the impurity gettering behavior of a modified layer formed immediately under an epitaxial layer, the modified layer containing carbon in solid solution. In this method, a modified layer located immediately under an epitaxial layer, the modified layer containing carbon in solid solution, is analyzed by three-dimensional atom probe microscopy, and the impurity gettering capability of the modified layer is evaluated based on a three-dimensional map of carbon in the modified layer, obtained by the analysis.
    Type: Grant
    Filed: January 12, 2018
    Date of Patent: December 8, 2020
    Assignee: SUMCO CORPORATION
    Inventors: Satoshi Shigematsu, Ryosuke Okuyama, Kazunari Kurita
  • Patent number: 10857762
    Abstract: It is provided that a polymer film; a preparation method of the polymer film; and a laminated body used the polymer film. The polymer film is suitable for use in producing a laminate body which comprises a support and a polymer film, and is reduced in foreign-matter trapping and which can be used for supplying film devices using conventional apparatuses for glass substrates or silicon substrates. The polymer film coated with the layer of silane coupling agent, which is suitable for producing a laminate that comprises a support and a polymer film, comprises a silane coupling agent layer formed on at least one surface of the polymer film, wherein the silane coupling agent layer has a three-dimensional surface roughness (Sa) of 5.0 nm or less. The method of efficient for producing the polymer film coated with the above layer is the method for producing without using a vacuum.
    Type: Grant
    Filed: August 24, 2015
    Date of Patent: December 8, 2020
    Assignee: TOYOBO CO., LTD.
    Inventors: Tetsuo Okuyama, Naoki Watanabe, Issei Kobayashi, Toshiyuki Tsuchiya, Satoshi Maeda
  • Patent number: 10848208
    Abstract: In a radio communication system that performs beamforming in MIMO transmission between a radio base station and at least one user terminal, radio base station (10) includes: weight control section (104) that determines a beamforming weight used for the beamforming, for each of subbands formed by dividing a transmission band; and communication section (109) that transmits a signal to which the beamforming is applied using the beamforming weight.
    Type: Grant
    Filed: December 18, 2017
    Date of Patent: November 24, 2020
    Assignee: NTT DOCOMO, INC.
    Inventors: Shohei Yoshioka, Satoshi Suyama, Jun Mashino, Tatsuki Okuyama, Yukihiko Okumura
  • Patent number: 10841785
    Abstract: The present disclosure aims to provide a core node capable of reducing the number of messages or an amount of data to be transmitted to the core node. A core node (10) according to the present disclosure includes: a congestion state detector (11) configured to detect a congestion state of an own apparatus; a communication unit (13) configured to receive a NAS request message that has specified an APN from a radio terminal (20); and a controller (12) configured to determine that processing regarding the NAS request message will not be executed while the congestion state of the own apparatus is being detected. The communication unit (13) transmits a reject message including a plurality of APNs that can be specified by the radio terminal (20) to the radio terminal (20) when it is determined in the controller (12) that the processing regarding the NAS request message will not be executed.
    Type: Grant
    Filed: November 28, 2016
    Date of Patent: November 17, 2020
    Assignee: NEC CORPORATION
    Inventors: Toru Yamada, Yumiko Okuyama, Masashi Shimoma, Akira Kamei, Masahiro Serizawa, Kyoji Hirata, Satoshi Hasegawa
  • Publication number: 20200303003
    Abstract: A multiply-accumulate operation apparatus is capable of sufficiently restraining a sneak current when employing a precharge method where the magnitude of an electric current flowing through an output line is detected. In a synapse operation section, memory cells storing respective synaptic connection weights are arranged in rows and columns. Output lines are connected to memory cells in the corresponding column, and input lines are connected to memory cells in the corresponding row. Each output line is precharged, and then its electric potential is decreased during the corresponding memory cells flow cell currents corresponding to their synaptic connection weights. A memory element of each memory cell includes a memory transistor, a drain side transistor, and a source side transistor connected in series, and is connected between the corresponding input and output line. The memory transistor stores a synaptic connection weight according to the amount of charge in a charge storage layer.
    Type: Application
    Filed: July 25, 2019
    Publication date: September 24, 2020
    Inventors: Kazumasa YANAGISAWA, Tomoichi HAYASHI, Satoshi NODA, Yasuhiro TANIGUCHI, Kosuke OKUYAMA
  • Publication number: 20200305021
    Abstract: An object is to provide a policy control system that can easily change a policy. A policy control system according to the present invention includes a PCRF entity (10) including a policy control unit (11) for determining a policy to be applied to a group including a plurality of wireless terminals according to environmental information changed at a specified timing and a PCEF entity (20) including a policy control execution unit (21) for applying the policy determined by the policy control unit (11) to communication related to the plurality of wireless terminals included in the group.
    Type: Application
    Filed: November 28, 2016
    Publication date: September 24, 2020
    Applicant: NEC CORPORATION
    Inventors: Kyoji HIRATA, Toru YAMADA, Masahiro SERIZAWA, Akira KAMEI, Yumiko OKUYAMA, Masashi SHIMOMA, Satoshi HASEGAWA
  • Publication number: 20200288350
    Abstract: A service control apparatus (20) according to the present disclosure includes: a communication unit (21) configured to receive, from each of service providing apparatuses (30, 32, 34), a communication pattern that defines a timing of communication between each of the service providing apparatuses and a communication terminal (10); and a controller (22) configured to predict a load of a network that performs data transmission between the communication terminal (10) and each of the service providing apparatuses based on the plurality of communication patterns. When it is predicted in the controller (22) that the load of the network will become higher than a predetermined threshold, the communication unit (21) transmits a message for prompting the communication pattern to change to at least one of the plurality of service providing apparatuses.
    Type: Application
    Filed: May 10, 2018
    Publication date: September 10, 2020
    Applicant: NEC Corporation
    Inventors: Toru YAMADA, Akira KAMEI, Yumiko OKUYAMA, Kyoji HIRATA, Masahiro SERIZAWA, Satoshi HASEGAWA, Masashi SHIMOMA
  • Publication number: 20200275374
    Abstract: A service control apparatus (20) according to the present disclosure includes: a communication unit (21) configured to receive, from a service providing apparatus (30), downlink data destined for a communication terminal (10), and information about a maximum allowable delay time of the downlink data; and a control unit (22) configured to determine whether the maximum allowable delay time expires by a communication enabled timing at which the communication terminal (10) in a power saving state can next perform communication, in which when the maximum allowable delay time expires by the communication enabled timing, the communication unit (21) transmits, to the service providing apparatus (30), information indicating that the downlink data cannot be transmitted to the communication terminal (10).
    Type: Application
    Filed: May 10, 2018
    Publication date: August 27, 2020
    Applicant: NEC CORPORATION
    Inventors: Akira KAMEI, Toru YAMADA, Yumiko OKUYAMA, Kyoji HIRATA, Masahiro SERIZAWA, Satoshi HASEGAWA, Masashi SHIMOMA
  • Patent number: 10757603
    Abstract: To avoid congestion and an overload at the time of data transmission from an IoT device to a wireless network, at least one gateway apparatus is controlled to execute a gateway function at a first timing at a first position, collect data from a plurality of devices present near the first position, and transmit aggregated data to a base station, and to execute the gateway function at a second timing different from the first timing at a second position different from the first position, collect data from a plurality of devices present near the second position, and transmit aggregated data to the base station.
    Type: Grant
    Filed: September 21, 2017
    Date of Patent: August 25, 2020
    Assignee: NEC Corporation
    Inventors: Akira Kamei, Toru Yamada, Masahiro Serizawa, Kyoji Hirata, Yumiko Okuyama, Satoshi Hasegawa, Masashi Shimoma
  • Patent number: 10742279
    Abstract: In user terminal 20, communication section 202 receives a data signal to which precoding based on first channel information indicating a channel between radio base station 10 and user terminal 20 estimated in first channel estimation and beamforming are applied. The first channel information is an equivalent channel matrix including a beamforming weight. Stage-2 channel estimation section 205 performs second channel estimation for estimating second channel information indicating a channel between radio base station 10 and user terminal 20. The second channel information is an equivalent channel matrix including the beamforming weight and a precoding matrix. Postcoding section 207 performs postcoding on the data signal based on the second channel information.
    Type: Grant
    Filed: November 24, 2017
    Date of Patent: August 11, 2020
    Assignee: NTT DOCOMO, INC.
    Inventors: Shohei Yoshioka, Satoshi Suyama, Jun Mashino, Tatsuki Okuyama, Yukihiko Okumura
  • Publication number: 20200236621
    Abstract: A service control apparatus (20) according to the present disclosure includes: a communication unit (21) configured to receive a first communication pattern that defines a timing of communication between a service providing apparatus (30) and a communication terminal (10) from the service providing apparatus (30) and a second communication pattern that defines a timing of communication between a service providing apparatus (32) and the communication terminal (10) from the service providing apparatus (32); and a controller (22) configured to determine whether the first communication pattern and the second communication pattern indicate communication timings different from each other. When the first communication pattern and the second communication pattern indicate communication timings different from each other, the communication unit (21) transmits a message to the second service providing apparatus (32) requesting it to change its communication pattern to the first communication pattern.
    Type: Application
    Filed: May 10, 2018
    Publication date: July 23, 2020
    Applicant: NEC Corporation
    Inventors: Toru YAMADA, Akira KAMEI, Yumiko OKUYAMA, Kyoji HIRATA, Masahiro SERIZAWA, Satoshi HASEGAWA, Masashi SHIMOMA
  • Publication number: 20200226282
    Abstract: A medical information anonymizing system includes a processing circuitry. The processing circuitry acquires medical information generated in a format based on a communication standard for a medical image and including a medical image and supplementary information. The processing circuitry adds the anonymization reference information indicating an anonymizing method for anonymizing the medical information to the supplementary information in the medical information. The processing circuitry configured to receive the medical information in which the anonymization reference information is added to the supplementary information and, based on the anonymization reference information added to the medical information, anonymize at least one of the medical image and the supplementary information included in the medical information.
    Type: Application
    Filed: December 18, 2019
    Publication date: July 16, 2020
    Applicant: Canon Medical Systems Corporation
    Inventors: Shingo TAKAGI, Kei YAMAJI, Shinichi NAKANO, Hideki TADA, Satoshi OKUYAMA, Hidetoshi ISHIGAMI, Seiji MIKAMI, Norimasa MUROI, Hiroshi KUROSAWA, Takumi KANEKO
  • Patent number: 10708821
    Abstract: A management apparatus in a wireless communication system including multiple transmission points transmitting reference signals, the management apparatus managing the transmission points, and a mobile station, includes: a management unit for managing first and second clusters generated by grouping one or more transmission points used to communicate with the mobile station among the multiple transmission points; and a control unit for controlling allocation of the reference signals transmitted from the multiple transmission points in the first and second clusters. The management unit detects that multiple cells formed by the transmission points in the first cluster overlap some of multiple cells formed by the transmission points in the second cluster. When the management unit detects the overlap, the control unit allocates the orthogonal reference signals to the multiple cells formed by the transmission points in the first cluster and the multiple cells formed by the transmission points in the second cluster.
    Type: Grant
    Filed: February 16, 2017
    Date of Patent: July 7, 2020
    Assignee: NTT DOCOMO, INC.
    Inventors: Tatsuki Okuyama, Satoshi Suyama, Tatsunori Obara, Yukihiko Okumura
  • Patent number: 10700756
    Abstract: A user equipment UE includes: a measurer that measures, for each of a plurality of candidate beams, a benchmark pertaining to communication quality; a comparer that compares the benchmark with a first threshold value and a second threshold value; and a feedback unit that transmits the benchmark to the base station as feedback information pertaining to an interference beam if the benchmark is the first threshold value or higher and lower than the second threshold value, transmits the benchmark to the base station as feedback information pertaining to a desired beam if the benchmark is the second threshold value or higher, and transmits no feedback information to the base station if the benchmark is lower than the first threshold value, based on the comparison results of the comparer.
    Type: Grant
    Filed: February 1, 2017
    Date of Patent: June 30, 2020
    Assignee: NTT DOCOMO, INC.
    Inventors: Tatsuki Okuyama, Satoshi Suyama, Tatsunori Obara, Yukihiko Okumura
  • Publication number: 20200203178
    Abstract: Provided is a method of evaluating the impurity gettering capability of an epitaxial silicon wafer, which allows for very precise evaluation of the impurity gettering behavior of a modified layer formed immediately under an epitaxial layer, the modified layer containing carbon in solid solution. In this method, a modified layer located immediately under an epitaxial layer, the modified layer containing carbon in solid solution, is analyzed by three-dimensional atom probe microscopy, and the impurity gettering capability of the modified layer is evaluated based on a three-dimensional map of carbon in the modified layer, obtained by the analysis.
    Type: Application
    Filed: January 12, 2018
    Publication date: June 25, 2020
    Applicant: SUMCO CORPORATION
    Inventors: Satoshi SHIGEMATSU, Ryosuke OKUYAMA, Kazunari KURITA