Patents by Inventor Kazuhiko Takamisawa

Kazuhiko Takamisawa 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).

  • Method for producing mixed gas and gas mixing device
    Patent number: 9486749
    Abstract: This gas mixing device includes a main gas flow path, an additive gas flow path, a mixing section, and a flow rate control unit. A pilot type pressure regulating unit configured to regulate pressure of a main gas based on a pressure in the additive gas flow path and a mass flow meter configured to detect the flow rate of the main gas flow path are provided on the main gas flow path. An additive gas flow rate regulator configured to regulate a flow rate of an additive gas is provided on the additive gas flow path. The flow rate control unit controls the flow rate of the additive gas using the additive gas flow rate regulator based on a flow rate of the main gas detected by the mass flow meter.
    Type: Grant
    Filed: November 20, 2012
    Date of Patent: November 8, 2016
    Assignee: Nissan Tanaka Corporation
    Inventors: Kazuhiko Takamisawa, Takashi Miyoshi
  • Method For Producing Mixed Gas And Gas Mixing Device
    Publication number: 20140334246
    Abstract: This gas mixing device includes a main gas flow path, an additive gas flow path, a mixing section, and a flow rate control unit. A pilot type pressure regulating unit configured to regulate pressure of a main gas based on a pressure in the additive gas flow path and a mass flow meter configured to detect the flow rate of the main gas flow path are provided on the main gas flow path. An additive gas flow rate regulator configured to regulate a flow rate of an additive gas is provided on the additive gas flow path. The flow rate control unit controls the flow rate of the additive gas using the additive gas flow rate regulator based on a flow rate of the main gas detected by the mass flow meter.
    Type: Application
    Filed: November 20, 2012
    Publication date: November 13, 2014
    Inventors: Kazuhiko Takamisawa, Takashi Miyoshi