Patents by Inventor Mamoru Umemura

Mamoru Umemura 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: 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
  • 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
  • Patent number: 4546432
    Abstract: For a Prolog processor, a plurality of table entries are formed in a predetermined number of formats for storage in a program memory (21). Each table entry has a preselected number of fields which are related to the fields of at least one other table entry so that the table entries represent a Prolog program. A plurality of registers (26-28) are for storing, from time to time, various fields of the table entry read out of the program memory. Responsive to the fields of the read-out table entry, a control unit (25) controls a selector (22) for selecting one of the registers at a time to make the field stored in the selected register access the program memory for read out of another of the table entries.
    Type: Grant
    Filed: August 31, 1983
    Date of Patent: October 8, 1985
    Assignee: NEC Corporation
    Inventors: Mamoru Umemura, Minoru Yokota