Patents by Inventor Paul Herbert Richard

Paul Herbert Richard 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).

  • Cyclone separator having multiple-vaned gas inlets
    Patent number: 3969096
    Abstract: A cyclone separator having multiple-vaned gas inlets adapted to guide the gas flow into the interior of the cyclone separator. The total sum of the inlet areas is at least equal to the smallest internal flow area and the cyclone is useful for separating suspended solid particles from internal combustion engine exhaust gases.
    Type: Grant
    Filed: October 16, 1974
    Date of Patent: July 13, 1976
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Paul Herbert Richard