Patents by Inventor Toru UMETSU

Toru UMETSU 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).

  • Electrical apparatus
    Patent number: 11146094
    Abstract: An electrical apparatus incorporates a first rechargeable battery (11) and a second rechargeable battery (12) connected in parallel with the first rechargeable battery (11), the second rechargeable battery (12) having an allowable maximum discharge current larger than that of the first rechargeable battery (11). The electrical apparatus includes: a power supply path (15a) configured to input power supplied from the first rechargeable battery (11) and from the second rechargeable battery (12) to a load (15); and a discharge current limiting circuit connected serially with the first rechargeable battery (11) and configured to perform control in such a manner that a discharge current flowing from the first rechargeable battery (11) to the second rechargeable battery (12) and/or to the power supply path (15a) does not exceed the maximum discharge current of the first rechargeable battery (11).
    Type: Grant
    Filed: January 18, 2018
    Date of Patent: October 12, 2021
    Assignee: Sony Interactive Entertainment Inc.
    Inventors: Tsuyoshi Ohashi, Toru Umetsu, Motoki Katayama
  • ELECTRICAL APPARATUS
    Publication number: 20190356157
    Abstract: An electrical apparatus incorporates a first rechargeable battery (11) and a second rechargeable battery (12) connected in parallel with the first rechargeable battery (11), the second rechargeable battery (12) having an allowable maximum discharge current larger than that of the first rechargeable battery (11). The electrical apparatus includes: a power supply path (15a) configured to input power supplied from the first rechargeable battery (11) and from the second rechargeable battery (12) to a load (15); and a discharge current limiting circuit connected serially with the first rechargeable battery (11) and configured to perform control in such a manner that a discharge current flowing from the first rechargeable battery (11) to the second rechargeable battery (12) and/or to the power supply path (15a) does not exceed the maximum discharge current of the first rechargeable battery (11).
    Type: Application
    Filed: January 18, 2018
    Publication date: November 21, 2019
    Applicant: Sony Interactive Entertainment Inc.
    Inventors: Tsuyoshi OHASHI, Toru UMETSU, Motoki KATAYAMA