Patents by Inventor Darren F. Arola

Darren F. Arola 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).

  • Apparatus and method for enhancing partitioning of different polymeric materials from a mixture by density differential alteration
    Patent number: 6335376
    Abstract: A differential density alteration (DDA) device to enable the separation and partitioning of particles of one or more selected members of plastics included in a mixture of a plurality of different plastics in which each member of the plurality of different plastics is divided into discrete particles. The DDA device heats the mixture to a temperature for a time that causes the particles of the one or more selected members to alter in such a way that the difference between the apparent density of the particles of the selected one or more members and the apparent density of particles of the other members of the mixture (the differential density), after heating, is different from the differential density before heating, whereby the alteration in differential density produces a differential density alteration (DDA).
    Type: Grant
    Filed: May 26, 1999
    Date of Patent: January 1, 2002
    Assignee: MBA Polymers, Inc.
    Inventors: Laurence E. Allen, III, Darren F. Arola