Patents by Inventor Alan Tat Cheng

Alan Tat Cheng 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).

  • Method of using high pressure LN2 for cooling reactors
    Patent number: 6324852
    Abstract: An apparatus for and method of delivering a liquid cryogen into a reaction vessel to cool an exothermic reaction within the vessel wherein the liquid cryogen can be supplied directly into the reaction vessel at a maximum high pressure of about 3000 psi is provided. The liquid cryogen may come directly from a high pressure liquid cryogen storage tank without any pressure regulators or control valves between the reaction vessel and the storage tank thereby reducing flashing and eliminating the need for sub-cooling the liquid cryogen.
    Type: Grant
    Filed: January 24, 2000
    Date of Patent: December 4, 2001
    Assignee: Praxair Technology, Inc.
    Inventor: Alan Tat Cheng