Patents by Inventor Ryuji MITSUI

Ryuji MITSUI 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).

  • Rechargeable cleaner
    Patent number: 11980335
    Abstract: A rechargeable cleaner includes a body, a rechargeable battery, and a charger. The body is configured to generate suction power capable of sucking dust together with air using a motor. The rechargeable battery is configured to supply electric power to the motor. The charger is configured to charge the battery at a charging rate of 3 C or higher and lower than 10 C.
    Type: Grant
    Filed: May 23, 2019
    Date of Patent: May 14, 2024
    Assignee: MAKITA CORPORATION
    Inventors: Ryuji Mitsui, Tadahiko Kobayakawa, Takuya Umemura, Toru Yamada, Mamoru Sakai
  • Rechargeable cleaner having body controller
    Patent number: 11925307
    Abstract: A rechargeable cleaner includes a body, a rechargeable battery, a charger, and a body controller. The body is configured to generate suction power capable of sucking dust together with air using a motor. The rechargeable battery is configured to supply electric power to the motor. The charger is configured to charge the battery. The body controller is disposed in the body. The body controller controls at least one of a charging current and a charging voltage based on cell voltage information indicating a cell voltage, cell temperature information indicating a cell temperature, and battery identification information for identifying the battery that are acquired from the battery, and based on charger identification information for identifying the charger acquired from the charger.
    Type: Grant
    Filed: May 23, 2019
    Date of Patent: March 12, 2024
    Assignee: MAKITA CORPORATION
    Inventors: Ryuji Mitsui, Tadahiko Kobayakawa, Takuya Umemura, Toru Yamada, Mamoru Sakai
  • RECHARGEABLE CLEANER
    Publication number: 20210274990
    Abstract: A rechargeable cleaner includes a body, a rechargeable battery, and a charger. The body is configured to generate suction power capable of sucking dust together with air using a motor. The rechargeable battery is configured to supply electric power to the motor. The charger is configured to charge the battery at a charging rate of 3 C or higher and lower than 10 C.
    Type: Application
    Filed: May 23, 2019
    Publication date: September 9, 2021
    Applicant: MAKITA CORPORATION
    Inventors: Ryuji MITSUI, Tadahiko KOBAYAKAWA, Takuya UMEMURA, Toru YAMADA, Mamoru SAKAI
  • RECHARGEABLE CLEANER
    Publication number: 20210228040
    Abstract: A rechargeable cleaner includes a body, a rechargeable battery, a charger, and a body controller. The body is configured to generate suction power capable of sucking dust together with air using a motor. The rechargeable battery is configured to supply electric power to the motor. The charger is configured to charge the battery. The body controller is disposed in the body. The body controller controls at least one of a charging current and a charging voltage based on cell voltage information indicating a cell voltage, cell temperature information indicating a cell temperature, and battery identification information for identifying the battery that are acquired from the battery, and based on charger identification information for identifying the charger acquired from the charger.
    Type: Application
    Filed: May 23, 2019
    Publication date: July 29, 2021
    Applicant: MAKITA CORPORATION
    Inventors: Ryuji MITSUI, Tadahiko KOBAYAKAWA, Takuya UMEMURA, Toru YAMADA, Mamoru SAKAI