Patents by Inventor Songhan Wang

Songhan Wang 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).

  • Condensating-fractionating tower system
    Patent number: 6023943
    Abstract: An improved condensating-fractionating tower system used in the separation of gaseous mixture, comprising a dephlegmator, a column section and a tower bottom, the said dephlegmator being provided in the upper portion of the tower, is characterized in that the dephlegmator is a plate-fin dephlegmator.
    Type: Grant
    Filed: May 14, 1998
    Date of Patent: February 15, 2000
    Assignees: China Petro-Chemical Corporation, Beijing Petrochemical Engineering Company
    Inventors: Songhan Wang, Guanghua Li, Li Li