Patents by Inventor Masaki KOZAI

Masaki KOZAI 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: 12149064
    Abstract: A feeding system that feeds power to a load includes only a single device configured to have neutral point high-resistance between a feeding line and the earth. The device functions as a ground fault overvoltage detection type of ground fault detector. The feeding system further comprises a control device. When the ground fault overvoltage detection type of ground fault detector detects a ground fault, the ground fault overvoltage detection type of ground fault detector transmits, to the control device via a signal line, a signal indicating that the ground fault has occurred. The control device instructs a breaker corresponding to the specific distributed unit in which it is determined that the ground fault has occurred to perform breaking.
    Type: Grant
    Filed: May 18, 2020
    Date of Patent: November 19, 2024
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Naoki Hanaoka, Hidetoshi Takada, Toshimitsu Tanaka, Masaki Kozai
  • Patent number: 12113350
    Abstract: A feeding system feeds power from a power unit to a load via a feeding line and includes a protection device configured to operate by a current equal to or greater than a predetermined current; a monitoring unit configured to monitor whether an accident occurs in the feeding line; and a gate block unit configured to stop the feeding of the power of the power unit when the monitoring unit detects that an accident causing the protection device not to operate has occurred.
    Type: Grant
    Filed: May 18, 2020
    Date of Patent: October 8, 2024
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Naoki Hanaoka, Hidetoshi Takada, Masaki Kozai
  • Publication number: 20230214945
    Abstract: A power transaction control device for virtually performing a power transaction between a plurality of grids includes a data storage unit that stores order information about power trading between the plurality of grids, and a matching unit that establishes the power transaction between a first site of a first grid of the plurality of grids and a second site of a second grid of the plurality of grids when a pair of the first site and the second site each having an identical price for a selling order and a purchase order of power is established, and when existence of a site that interchanges balancing power identical to balancing power interchanged by the first site in the first grid and existence of a site that interchanges balancing power identical to balancing power interchanged by the second site in the second grid are detected in accordance with order information.
    Type: Application
    Filed: May 25, 2020
    Publication date: July 6, 2023
    Inventors: Naoki HANAOKA, Hidetoshi TAKADA, Masaki KOZAI, Hiroya MINAMI
  • Publication number: 20230187924
    Abstract: A feeding system that feeds power to a load includes only a single device configured to have neutral point high-resistance between a feeding line and the earth. The device functions as a ground fault overvoltage detection type of ground fault detector. The feeding system further comprises a control device. When the ground fault overvoltage detection type of ground fault detector detects a ground fault, the ground fault overvoltage detection type of ground fault detector transmits, to the control device via a signal line, a signal indicating that the ground fault has occurred. The control device instructs a breaker corresponding to the specific distributed unit in which it is determined that the ground fault has occurred to perform breaking.
    Type: Application
    Filed: May 18, 2020
    Publication date: June 15, 2023
    Inventors: Naoki HANAOKA, Hidetoshi TAKADA, Toshimitsu TANAKA, Masaki KOZAI
  • Publication number: 20230187936
    Abstract: A control apparatus that controls power consumption in a service providing system configured to provide a service using servers provided, respectively, in a plurality of bases placed in a geographically dispersed manner, the apparatus including: a target power setting unit configured to set target power values of the respective bases based on requests for increases/decreases in power consumption in the bases equipped with the servers; and a load balance setting unit configured to perform load transfer among a plurality of servers based on the target power values.
    Type: Application
    Filed: May 12, 2020
    Publication date: June 15, 2023
    Inventors: Masaki KOZAI, Hiroya MINAMI, Toshihiro HAYASHI, Naoki HANAOKA, Miho IWAMOTO, Hidetoshi TAKADA
  • Publication number: 20230178975
    Abstract: A feeding system feeds power from a power unit to a load via a feeding line and includes a protection device configured to operate by a current equal to or greater than a predetermined current; a monitoring unit configured to monitor whether an accident occurs in the feeding line; and a gate block unit configured to stop the feeding of the power of the power unit when the monitoring unit detects that an accident causing the protection device not to operate has occurred.
    Type: Application
    Filed: May 18, 2020
    Publication date: June 8, 2023
    Inventors: Naoki HANAOKA, Hidetoshi TAKADA, Masaki KOZAI
  • Publication number: 20230148042
    Abstract: Provided is a communication system including a communication building side communication device in a communication building and a user's home side communication device in a user's home that are connected via an optical fiber and a metal cable. When a power fed to the user's home side communication device from a commercial power supply stops, the communication building side communication device feeds the power to the user's home side communication device via the metal cable to operate the user's home side communication device, and the user's home side communication device communicates with the communication building side communication device via the optical fiber.
    Type: Application
    Filed: May 11, 2020
    Publication date: May 11, 2023
    Inventors: Naoki HANAOKA, Hidetoshi TAKADA, Toshihiro HAYASHI, Masaki KOZAI
  • Publication number: 20230038705
    Abstract: A power consumption pattern extraction apparatus according to one embodiment includes a processor and a memory storing program instructions that cause the processor to receive, as an input, a total power consumption for every predetermined time interval over a predetermined time period by a consumer group which consumes power, create a total power consumption matrix that has the total power consumption, received as an input, as elements and has rows and columns corresponding to preset units, perform non-negative matrix factorization on the created total power consumption matrix to create a first factor matrix including basis vectors and a second factor matrix including coefficients for the basis vectors, and extract power consumption patterns and proportions of consumers that consume power in the power consumption patterns from the created first and second factor matrices.
    Type: Application
    Filed: January 21, 2020
    Publication date: February 9, 2023
    Inventors: Miho IWAMOTO, Masaki KOZAI, Hidetoshi TAKADA