Patents by Inventor Shizuka SATO

Shizuka SATO 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: 11941495
    Abstract: An information processing device according to the present invention includes: a memory; and at least one processor coupled to the memory. The processor performs operations. The operations includes: extracting a feature of a period or a frequency in a plurality of pieces of time-series data acquired by measuring an object; classifying the pieces of time-series data into a group related to the feature; generating, for each of the groups, a model that represents a relationship among the pieces of time-series data classified into the group; and selecting the model in which strength of the relationship satisfies a predetermined condition.
    Type: Grant
    Filed: August 2, 2017
    Date of Patent: March 26, 2024
    Assignee: NEC CORPORATION
    Inventors: Shizuka Sato, Takazumi Kawai
  • Patent number: 11293989
    Abstract: An anomaly detection device includes: at least one memory configured to store instructions; and at least one processor configured to execute the instructions to: cluster a plurality of power storage systems into a plurality of clusters; generate a detection model for detecting an anomaly in the power storage systems for each of the clusters; and detect an anomaly in the power storage system for each of the clusters by using the detection model associated with the cluster.
    Type: Grant
    Filed: March 15, 2018
    Date of Patent: April 5, 2022
    Assignee: NEC CORPORATION
    Inventors: Shizuka Sato, Takazumi Kawai
  • Publication number: 20210089962
    Abstract: An information processing device according to the present invention includes: a memory; and at least one processor coupled to the memory. The processor performs operations. The operations includes: extracting a feature of a period or a frequency in a plurality of pieces of time-series data acquired by measuring an object; classifying the pieces of time-series data into a group related to the feature; generating, for each of the groups, a model that represents a relationship among the pieces of time-series data classified into the group; and selecting the model in which strength of the relationship satisfies a predetermined condition.
    Type: Application
    Filed: August 2, 2017
    Publication date: March 25, 2021
    Applicant: NEC CORPORATION
    Inventors: Shizuka SATO, Takazumi KAWAI
  • Publication number: 20210055350
    Abstract: An anomaly detection device includes: at least one memory configured to store instructions; and at least one processor configured to execute the instructions to: cluster a plurality of power storage systems into a plurality of clusters; generate a detection model for detecting an anomaly in the power storage systems for each of the clusters; and detect an anomaly in the power storage system for each of the clusters by using the detection model associated with the cluster.
    Type: Application
    Filed: March 15, 2018
    Publication date: February 25, 2021
    Applicant: NEC Corporation
    Inventors: Shizuka SATO, Takazumi KAWAI
  • Patent number: 10374258
    Abstract: A nonaqueous electrolytic solution comprising a cyclobutenedione derivative represented by the following general formula (1): wherein R1 represents an organic group having a carbon-carbon double bond or a carbon-carbon triple bond in its structure, and R2 represents an alkyl group having 1-6 carbon atoms, an alkoxy group having 1-6 carbon atoms, a thioalkyl group having 1-6 carbon atoms, a substituted or unsubstituted thioaryl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted heteroaryl group.
    Type: Grant
    Filed: July 1, 2015
    Date of Patent: August 6, 2019
    Assignee: NEC Corporation
    Inventors: Katsumi Maeda, Shizuka Sato, Mika Horie
  • Patent number: 10128538
    Abstract: The present invention provides a non-aqueous electrolytic solution comprising a phosphinoamine-based compound represented by formula (1) below and a lithium ion secondary battery comprising the non-aqueous electrolytic solution. By adding the phosphinoamine-based compound to the non-aqueous electrolytic solution, oxidative degradation in the non-aqueous electrolytic solution is suppressed, and thus gas generation is suppressed.
    Type: Grant
    Filed: June 11, 2015
    Date of Patent: November 13, 2018
    Assignee: NEC Corporation
    Inventors: Shizuka Sato, Katsumi Maeda, Noriyuki Tamura, Sadanori Hattori
  • Publication number: 20180183099
    Abstract: The present invention provides a non-aqueous electrolytic solution comprising a phosphinoamine-based compound represented by formula (1) below and a lithium ion secondary battery comprising the non-aqueous electrolytic solution. By adding the phosphinoamine-based compound to the non-aqueous electrolytic solution, oxidative degradation in the non-aqueous electrolytic solution is suppressed, and thus gas generation is suppressed.
    Type: Application
    Filed: June 11, 2015
    Publication date: June 28, 2018
    Applicant: NEC Corporation
    Inventors: Shizuka SATO, Katsumi MAEDA, Noriyuki TAMURA, Sadanori HATTORI
  • Publication number: 20170210764
    Abstract: A nonaqueous electrolytic solution comprising a cyclobutenedione derivative represented by the following general formula (1): wherein R1 represents an organic group having a carbon-carbon double bond or a carbon-carbon triple bond in its structure, and R2 represents an alkyl group having 1-6 carbon atoms, an alkoxy group having 1-6 carbon atoms, a thioalkyl group having 1-6 carbon atoms, a substituted or unsubstituted thioaryl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted heteroaryl group.
    Type: Application
    Filed: July 1, 2015
    Publication date: July 27, 2017
    Applicant: NEC Corporation
    Inventors: Katsumi MAEDA, Shizuka SATO, Mika HORIE