Patents by Inventor Hitoshi Nakahata

Hitoshi Nakahata 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).

  • Vehicular heater
    Patent number: 11560039
    Abstract: A vehicular heater includes a heat medium circuit connected to a heater core that heats vent air via heat exchange with a heat medium. The heat medium circuit includes a first flow path connected to the heater core through a power unit, and a second flow path arranged in parallel with the first flow path and connected to the heater core through a heat source different from the power unit. A controller adjusts a first flow rate of the heat medium in the first flow path to be larger than a second flow rate of the heat medium in the second flow path when the power unit is operating.
    Type: Grant
    Filed: June 10, 2020
    Date of Patent: January 24, 2023
    Assignee: DENSO CORPORATION
    Inventors: Mitsuhiro Nakazawa, Hitoshi Nakahata, Tetsuya Takechi, Yoshihiko Uesugi, Yuji Kawazoe
  • VEHICULAR HEATER
    Publication number: 20200298665
    Abstract: A vehicular heater includes a heat medium circuit connected to a heater core that heats vent air via heat exchange with a heat medium. The heat medium circuit includes a first flow path connected to the heater core through a power unit, and a second flow path arranged in parallel with the first flow path and connected to the heater core through a heat source different from the power unit. A controller adjusts a first flow rate of the heat medium in the first flow path to be larger than a second flow rate of the heat medium in the second flow path when the power unit is operating.
    Type: Application
    Filed: June 10, 2020
    Publication date: September 24, 2020
    Inventors: Mitsuhiro NAKAZAWA, Hitoshi NAKAHATA, Tetsuya TAKECHI, Yoshihiko UESUGI, Yuji KAWAZOE
  • Method of verifying design of logic circuit
    Patent number: 7861197
    Abstract: A method of verifying a design of logic circuit of a semiconductor device having a first circuit block to which the power continuously applied and a second circuit block receiving the power which turns on/off in response to the state of operation modes includes replacing a first basic logic cell including a storage element to a first verification logic cell in the blocks, replacing a second basic logic cell having no storage cell to a second verification logic cell in the blocks, and performing a logical simulation of the device.
    Type: Grant
    Filed: October 24, 2007
    Date of Patent: December 28, 2010
    Assignee: Oki Semiconductor Co., Ltd.
    Inventor: Hitoshi Nakahata
  • Method of verifying design of logic circuit
    Publication number: 20080163144
    Abstract: A method of verifying a design of logic circuit of a semiconductor device having a first circuit block to which the power continuously applied and a second circuit block receiving the power which turns on/off in response to the state of operation modes includes replacing a first basic logic cell including a storage element to a first verification logic cell in the blocks, replacing a second basic logic cell having no storage cell to a second verification logic cell in the blocks, and performing a logical simulation of the device.
    Type: Application
    Filed: October 24, 2007
    Publication date: July 3, 2008
    Inventor: Hitoshi Nakahata