Patents by Inventor Makoto Irisawa

Makoto Irisawa 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).

  • Natural gas liquefaction device and natural gas liquefaction method
    Patent number: 11549746
    Abstract: One object of the present invention is to provide a natural gas liquefaction device which uses noncombustible gas as a refrigerant, and can reduce the power consumption a range of relatively low refrigerant pressure, and the present invention provides a natural gas liquefaction device including a compressor which is configured to compress a refrigerant containing noncombustible gas by a plurality of compression stages; a heat exchanger which is configured to cool and liquefy a natural gas to be a liquefied natural gas; a natural gas liquefaction line which is configured to introduce the natural gas into the heat exchanger and supply the liquefied natural gas to an outside; a first refrigerant line which is configured to introduce a refrigerant-1 passed through the compressor into the heat exchanger, and then further introduce the refrigerant-1 into a decompressor; a second refrigerant line which is configured to introduce the refrigerant-2 decompressed by the decompressor into the heat exchanger, and further
    Type: Grant
    Filed: March 25, 2019
    Date of Patent: January 10, 2023
    Assignee: TAIYO NIPPON SANSO CORPORATION
    Inventor: Makoto Irisawa
  • NATURAL GAS LIQUEFACTION DEVICE AND NATURAL GAS LIQUEFACTION METHOD
    Publication number: 20210048243
    Abstract: One object of the present invention is to provide a natural gas liquefaction device which uses noncombustible gas as a refrigerant, and can reduce the power consumption a range of relatively low refrigerant pressure, and the present invention provides a natural gas liquefaction device including a compressor which is configured to compress a refrigerant containing noncombustible gas by a plurality of compression stages; a heat exchanger which is configured to cool and liquefy a natural gas to be a liquefied natural gas; a natural gas liquefaction line which is configured to introduce the natural gas into the heat exchanger and supply the liquefied natural gas to an outside; a first refrigerant line which is configured to introduce a refrigerant-1 passed through the compressor into the heat exchanger, and then further introduce the refrigerant-1 into a decompressor; a second refrigerant line which is configured to introduce the refrigerant-2 decompressed by the decompressor into the heat exchanger, and further
    Type: Application
    Filed: March 25, 2019
    Publication date: February 18, 2021
    Inventor: Makoto IRISAWA
  • Process and Apparatus for Nitrogen Production
    Publication number: 20080264101
    Abstract: A process and apparatus for producing nitrogen by which product nitrogen can be efficiently supplied.
    Type: Application
    Filed: November 7, 2005
    Publication date: October 30, 2008
    Applicant: Taiyo Nippon Sanso Corporation
    Inventors: Makoto Irisawa, Toshiyuki Nojima, Takashi Tafsumi