Patents by Inventor Yuki Takaya

Yuki Takaya 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: 20240092784
    Abstract: A condensed heterocyclic compound has a sepiapterin reductase inhibitory action and is particularly useful for treatment of a pain. The condensed heterocyclic compound represented by Formula (I) below (R1 represents a hydrocarbon group or the like; R2 and R3 represent a hydrogen atom or the like; R4, X, and Y represent defined substituents), a tautomer or a pharmaceutically acceptable salt of the compound, or a solvate of any of these.
    Type: Application
    Filed: April 13, 2021
    Publication date: March 21, 2024
    Applicants: NISSAN CHEMICAL CORPORATION, SHIONOGI & CO., LTD.
    Inventors: Masahiro KAMAURA, Yusuke INABA, Yusuke SHINTANI, Yuki KUWANO, Moemi NAKAO, Hiroshi NAGAI, Noriyuki KUROSE, Kenji TAKAYA, Mado NAKAJIMA
  • Patent number: 10541817
    Abstract: A data generation apparatus includes a processor that executes a process including obtaining target data sequentially from time-series data, the target data including n (n being an integer greater than or equal to 2) data items in a predetermined section of the time-series data, calculating parameter information satisfying a (k?1) order polynomial based on the target data, the (k?1) order polynomial including k random values, k being an integer greater than or equal to 1 and less than n, associating the target data to the parameter information, outputting the target data and the parameter information associated to the target data, attaching a signature to secret information based on a secret distributed protocol. The secret information is calculable by using k pairs of data including the target data and the parameter information associated to the target data, and outputting the secret information attached with the signature.
    Type: Grant
    Filed: March 2, 2017
    Date of Patent: January 21, 2020
    Assignee: Ricoh Company, Ltd.
    Inventors: Hitoshi Namiki, Hiroshi Kobayashi, Ryouji Yamamoto, Eiichiro Yoshida, Masuyoshi Yachida, Yuki Takaya
  • Patent number: 10348507
    Abstract: A data processing apparatus includes a memory storing a program and a processor configured to execute the program to implement a process of reading signed data including a predetermined number (n) of secret sharing data sets generated for each section of time series data and a signature value calculated for the each section of time series data based on a secret sharing protocol. The n secret sharing data sets include n units of data acquired from each section of time series data and parameter information for a polynomial of a predetermined degree calculated based on the acquired n units of data. The processor further implements processes of acquiring the predetermined degree, and editing the signed data by extracting a specific number of the secret sharing data sets from the n secret sharing data sets for the each section of time series data according to the acquired predetermined degree.
    Type: Grant
    Filed: February 15, 2017
    Date of Patent: July 9, 2019
    Assignee: Ricoh Company, Ltd.
    Inventors: Hitoshi Namiki, Hiroshi Kobayashi, Ryouji Yamamoto, Eiichiro Yoshida, Masuyoshi Yachida, Yuki Takaya
  • Patent number: 10162946
    Abstract: A data management system includes a detecting apparatus that detects an information processing apparatus and a server apparatus that controls access to data by the information processing apparatus. The detecting apparatus detects the information processing apparatus located within a predetermined area. The server apparatus includes a transmitter that transfers data to the detected information processing apparatus, the data being associated with access authority indicating whether or not the information processing apparatus is allowed to access the data, and circuitry that controls an access to the data from the detected information processing apparatus in accordance with the access authority associated with the data.
    Type: Grant
    Filed: August 29, 2016
    Date of Patent: December 25, 2018
    Assignee: Ricoh Company, Ltd.
    Inventors: Ryouji Yamamoto, Hiroshi Kobayashi, Atsushi Kokubo, Hidekazu Segawa, Yuki Takaya
  • Publication number: 20170264442
    Abstract: A data generation apparatus includes a processor that executes a process including obtaining target data sequentially from time-series data, the target data including n (n being an integer greater than or equal to 2) data items in a predetermined section of the time-series data, calculating parameter information satisfying a (k?1) order polynomial based on the target data, the (k?1) order polynomial including k random values, k being an integer greater than or equal to 1 and less than n, associating the target data to the parameter information, outputting the target data and the parameter information associated to the target data, attaching a signature to secret information based on a secret distributed protocol. The secret information is calculable by using k pairs of data including the target data and the parameter information associated to the target data, and outputting the secret information attached with the signature.
    Type: Application
    Filed: March 2, 2017
    Publication date: September 14, 2017
    Applicant: Ricoh Company, Ltd.
    Inventors: Hitoshi NAMIKI, Hiroshi KOBAYASHI, Ryouji YAMAMOTO, Eiichiro YOSHIDA, Masuyoshi YACHIDA, Yuki TAKAYA
  • Publication number: 20170264441
    Abstract: A data processing apparatus includes a memory storing a program and a processor configured to execute the program to implement a process of reading signed data including a predetermined number (n) of secret sharing data sets generated for each section of time series data and a signature value calculated for the each section of time series data based on a secret sharing protocol. The n secret sharing data sets include n units of data acquired from each section of time series data and parameter information for a polynomial of a predetermined degree calculated based on the acquired n units of data. The processor further implements processes of acquiring the predetermined degree, and editing the signed data by extracting a specific number of the secret sharing data sets from the n secret sharing data sets for the each section of time series data according to the acquired predetermined degree.
    Type: Application
    Filed: February 15, 2017
    Publication date: September 14, 2017
    Applicant: Ricoh Company, Ltd.
    Inventors: Hitoshi NAMIKI, Hiroshi KOBAYASHI, Ryouji YAMAMOTO, Eiichiro YOSHIDA, Masuyoshi YACHIDA, Yuki TAKAYA
  • Publication number: 20170076074
    Abstract: A data management system includes a detecting apparatus that detects an information processing apparatus and a server apparatus that controls access to data by the information processing apparatus. The detecting apparatus detects the information processing apparatus located within a predetermined area. The server apparatus includes a transmitter that transfers data to the detected information processing apparatus, the data being associated with access authority indicating whether or not the information processing apparatus is allowed to access the data, and circuitry that controls an access to the data from the detected information processing apparatus in accordance with the access authority associated with the data.
    Type: Application
    Filed: August 29, 2016
    Publication date: March 16, 2017
    Inventors: Ryouji YAMAMOTO, Hiroshi KOBAYASHI, Atsushi KOKUBO, Hidekazu SEGAWA, Yuki TAKAYA
  • Patent number: 9264854
    Abstract: A content selection system, in which a management apparatus, a distribution apparatus and a wireless terminal are provided, includes the distribution apparatus's distribution unit for distributing, within a predetermined spatial range, location information indicating a location at which the distribution apparatus is installed; the wireless terminal's obtaining unit for obtaining the location information distributed by the distribution unit; the wireless terminal's transmission unit for transmitting the obtained location information to the management apparatus; the management apparatus's reception unit for receiving the transmitted location information; the management apparatus's determination unit configured to determine whether the received location information indicates a predetermined location; and the management apparatus's selection unit for selecting a content associated with the predetermined location for output thereat in response to the determination by the determination unit that the received locati
    Type: Grant
    Filed: August 29, 2014
    Date of Patent: February 16, 2016
    Assignee: RICOH COMPANY, LTD.
    Inventors: Atsushi Kokubo, Ryouji Yamamoto, Hiroshi Kobayashi, Eiichiro Yoshida, Yuki Takaya
  • Publication number: 20150065175
    Abstract: A content selection system, in which a management apparatus, a distribution apparatus and a wireless terminal are provided, includes the distribution apparatus's distribution unit for distributing, within a predetermined spatial range, location information indicating a location at which the distribution apparatus is installed; the wireless terminal's obtaining unit for obtaining the location information distributed by the distribution unit; the wireless terminal's transmission unit for transmitting the obtained location information to the management apparatus; the management apparatus's reception unit for receiving the transmitted location information; the management apparatus's determination unit configured to determine whether the received location information indicates a predetermined location; and the management apparatus's selection unit for selecting a content associated with the predetermined location for output thereat in response to the determination by the determination unit that the received locati
    Type: Application
    Filed: August 29, 2014
    Publication date: March 5, 2015
    Inventors: Atsushi Kokubo, Ryouji Yamamoto, Hiroshi Kobayashi, Eiichiro Yoshida, Yuki Takaya