Patents by Inventor Raymond Paul Roberge

Raymond Paul Roberge 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).

  • Cryogenic system for providing industrial gas to a use point
    Patent number: 6668581
    Abstract: A system for providing industrial gas to a use point in relatively small quantities that would otherwise require the use of high pressure gas cylinders, wherein industrial gas is generated from a feed, liquefied using refrigeration generated by a refrigeration system, and stored in a storage vessel prior to provision to the use point. The preferred refrigeration system is a pulse tube system powered by gas associated with the industrial gas generation system.
    Type: Grant
    Filed: October 30, 2002
    Date of Patent: December 30, 2003
    Assignee: Praxair Technology, Inc.
    Inventors: Arun Acharya, John Henri Royal, Raymond Paul Roberge, Bayram Arman, Brian Michael Meredith
  • Food freezing system
    Patent number: 6532752
    Abstract: A food freezing system wherein refrigeration is generated by compressing, cooling and then expanding a defined multicomponent refrigerant mixture, which, after providing refrigeration to the food, is warmed against itself to effect the cooling.
    Type: Grant
    Filed: March 28, 2002
    Date of Patent: March 18, 2003
    Assignee: Praxair Technology, Inc.
    Inventors: Bayram Arman, Dante Patrick Bonaquist, Arthur Edward Holmer, Raymond Paul Roberge