the fluid being argon or crude argon

Patents Grantslast 30 patents

  • Information Patent Grant

    System and method for producing high purity argon

    • Patent number 6,351,971
    • Issue date Mar 5, 2002
    • Praxair Technology, Inc.
    • Tu Cam Nguyen
    • F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
  • Information Patent Grant

    Argon separation method and apparatus therefor

    • Patent number 5,784,899
    • Issue date Jul 28, 1998
    • Nippon Sanso Corporation
    • Toshiyuki Nojima
    • F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
  • Information Patent Grant

    Process for removing oxygen from crude argon

    • Patent number 5,035,726
    • Issue date Jul 30, 1991
    • Air Products and Chemicals, Inc.
    • Michael S. Chen
    • F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
  • Information Patent Grant

    Production of oxygen-lean argon from air

    • Patent number 4,994,098
    • Issue date Feb 19, 1991
    • Air Products and Chemicals, Inc.
    • Rakesh Agrawal
    • F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
  • Information Patent Grant

    Purification of crude argon

    • Patent number 4,935,044
    • Issue date Jun 19, 1990
    • Linde Aktiengesellschaft
    • Eugen Schoenpflug
    • F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
  • Information Patent Grant

    3596471

    • Patent number 3,596,471
    • Issue date Aug 3, 1971
    • F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
  • Information Patent Grant

    2990689

    • Patent number 2,990,689
    • Issue date Jul 4, 1961
    • F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
  • Information Patent Grant

    2765637

    • Patent number 2,765,637
    • Issue date Oct 9, 1956
    • F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...

Patents Applicationslast 30 patents