Patents by Inventor Hitoshi Tokunaga

Hitoshi Tokunaga 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).

  • Publication number: 20240109734
    Abstract: A conveyance equipment includes swirl flow-forming body, discharge fluid rectification cover and skirt. The swirl flow-forming body has columnar first body. A columnar recess is inward of lower end face of first body. A pair of fluid passages are formed in columnar first body to extend to inside surface of columnar recess and supply fluid into columnar recess to generate swirling flow. The discharge fluid rectification cover has a second body which includes a disk-shaped base plate and a peripheral wall that extends around the periphery of the base plate. The second body is positioned to cover the columnar recess. A suction port is in the bottom plate. A discharge passage is in the peripheral wall to extend generally tangential to the inside surface of peripheral wall. The skirt is cylindrical and is made of an elastic thin film, a top opening of which is connected to the suction port.
    Type: Application
    Filed: March 25, 2022
    Publication date: April 4, 2024
    Applicant: HARMOTEC CO., LTD.
    Inventors: Hitoshi IWASAKA, Hideyuki TOKUNAGA, Katsuhiro KOSHIISHI, Hidemitsu TANAKA, Yuji KASAI, Naonari IWASAKA
  • Patent number: 10478774
    Abstract: A denitrator removes nitrogen oxide in a flue gas generated from a combustion furnace by injecting a reducing agent into the flue gas. The denitrator includes a housing disposed above the combustion furnace. The housing includes a discharge port for the flue gas at one end of the housing. A cross-sectional area of flow of the flue gas gradually increases toward the discharge port. The housing gathers and guides the flue gas to the discharge port. The denitrator injects the reducing agent in another end of the housing.
    Type: Grant
    Filed: November 11, 2016
    Date of Patent: November 19, 2019
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Keiichi Nakagawa, Mikiya Sakurai, Kiyoto Itakura, Hitoshi Tokunaga, Naoya Okuzumi, Hirokazu Tsutsumi
  • Publication number: 20180369749
    Abstract: A denitrator removes nitrogen oxide in a flue gas generated from a combustion furnace by injecting a reducing agent into the flue gas. The denitrator includes a housing disposed above the combustion furnace. The housing includes a discharge port for the flue gas at one end of the housing. A cross-sectional area of flow of the flue gas gradually increases toward the discharge port. The housing gathers and guides the flue gas to the discharge port. The denitrator injects the reducing agent in another end of the housing.
    Type: Application
    Filed: November 11, 2016
    Publication date: December 27, 2018
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Keiichi Nakagawa, Mikiya Sakurai, Kiyoto Itakura, Hitoshi Tokunaga, Naoya Okuzumi, Hirokazu Tsutsumi