Patents by Inventor Norbert Mason

Norbert Mason 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 and apparatus for granulation and granulated product
    Patent number: 5100592
    Abstract: A method of melt granulation for powdery material is disclosed wherein the powdery material is discharged onto the upper surface of a heated rotary spreader for migration under centrifugal force to the periphery of the spreader accompanying by melting of a portion of the material and enrobing of non-melted particles by the melted material for discharge as enlarged granules from the periphery of the spreader. To improve the quality of the granules produced, the feed material is supplied to the spreader at two separate locations. The first location is the central portion of the spreader to provide the melted material and the second location is adjacent to the periphery of the spreader. The spreader is preferably in the form of a concave bowl or inverted truncated cone or dish.
    Type: Grant
    Filed: December 20, 1990
    Date of Patent: March 31, 1992
    Assignee: Washington University Technology Associated, Inc.
    Inventors: Robert E. Sparks, Norbert Mason, Michael Center