Patents by Inventor Graham Alan Leggett

Graham Alan Leggett 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).

  • Gas purification unit
    Patent number: 6572688
    Abstract: Gas is admitted to an in-container purification unit 202 via an inlet 212 located at or near the gas discharge end 220 of the unit. This feature is advantageous because it allows a liquefied gas container to be filled to a level above the second end of the body of the unit without the problem of dispensing liquefied gas.
    Type: Grant
    Filed: January 30, 2002
    Date of Patent: June 3, 2003
    Assignee: Air Products and Chemicals, Inc.
    Inventors: John Irven, Graham Alan Leggett, Jonathan Davey, Dao-Hong Zheng
  • Gas purification unit
    Publication number: 20020112608
    Abstract: Gas is admitted to an in-container purification unit 202 via an inlet 212 located at or near the gas discharge end 220 of the unit. This feature is advantageous because it allows a liquefied gas container to be filled to a level above the second end of the body of the unit without the problem of dispensing liquefied gas.
    Type: Application
    Filed: January 30, 2002
    Publication date: August 22, 2002
    Inventors: John Irven, Graham Alan Leggett, Jonathan Davey, Dao-Hong Zheng