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).
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Publication number: 20240092784Abstract: 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: ApplicationFiled: April 13, 2021Publication date: March 21, 2024Applicants: 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
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Patent number: 10541817Abstract: 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: GrantFiled: March 2, 2017Date of Patent: January 21, 2020Assignee: Ricoh Company, Ltd.Inventors: Hitoshi Namiki, Hiroshi Kobayashi, Ryouji Yamamoto, Eiichiro Yoshida, Masuyoshi Yachida, Yuki Takaya
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Patent number: 10348507Abstract: 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: GrantFiled: February 15, 2017Date of Patent: July 9, 2019Assignee: Ricoh Company, Ltd.Inventors: Hitoshi Namiki, Hiroshi Kobayashi, Ryouji Yamamoto, Eiichiro Yoshida, Masuyoshi Yachida, Yuki Takaya
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Data management system, data management method, and recording medium storing data management program
Patent number: 10162946Abstract: 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: GrantFiled: August 29, 2016Date of Patent: December 25, 2018Assignee: Ricoh Company, Ltd.Inventors: Ryouji Yamamoto, Hiroshi Kobayashi, Atsushi Kokubo, Hidekazu Segawa, Yuki Takaya -
Publication number: 20170264442Abstract: 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: ApplicationFiled: March 2, 2017Publication date: September 14, 2017Applicant: Ricoh Company, Ltd.Inventors: Hitoshi NAMIKI, Hiroshi KOBAYASHI, Ryouji YAMAMOTO, Eiichiro YOSHIDA, Masuyoshi YACHIDA, Yuki TAKAYA
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Publication number: 20170264441Abstract: 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: ApplicationFiled: February 15, 2017Publication date: September 14, 2017Applicant: Ricoh Company, Ltd.Inventors: Hitoshi NAMIKI, Hiroshi KOBAYASHI, Ryouji YAMAMOTO, Eiichiro YOSHIDA, Masuyoshi YACHIDA, Yuki TAKAYA
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DATA MANAGEMENT SYSTEM, DATA MANAGEMENT METHOD, AND RECORDING MEDIUM STORING DATA MANAGEMENT PROGRAM
Publication number: 20170076074Abstract: 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: ApplicationFiled: August 29, 2016Publication date: March 16, 2017Inventors: Ryouji YAMAMOTO, Hiroshi KOBAYASHI, Atsushi KOKUBO, Hidekazu SEGAWA, Yuki TAKAYA -
Patent number: 9264854Abstract: 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 locatiType: GrantFiled: August 29, 2014Date of Patent: February 16, 2016Assignee: RICOH COMPANY, LTD.Inventors: Atsushi Kokubo, Ryouji Yamamoto, Hiroshi Kobayashi, Eiichiro Yoshida, Yuki Takaya
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Publication number: 20150065175Abstract: 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 locatiType: ApplicationFiled: August 29, 2014Publication date: March 5, 2015Inventors: Atsushi Kokubo, Ryouji Yamamoto, Hiroshi Kobayashi, Eiichiro Yoshida, Yuki Takaya