Patents by Inventor Johannnes W. Van Der Meer

Johannnes W. Van Der Meer 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).

  • Feed line-ultrasonic activated gas injection
    Patent number: 4844663
    Abstract: The present invention is directed to an apparatus and method for minimizing mass flow rate fluctuations of a particulate solid fuel and gas mixture having a coal mass flow rate ranging from about 50-800 kg/m.sup.3 and a corresponding frequency range of about 0.1 to 100 Hertz transported to a reactor.
    Type: Grant
    Filed: September 18, 1987
    Date of Patent: July 4, 1989
    Assignee: Shell Oil Company
    Inventors: James A. Salter, Thomas S. DeWitz, Hendricus A. Dirkse, Johannnes W. Van Der Meer