Patents by Inventor Donald C. Sundberg

Donald C. Sundberg 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).

  • Microencapsulation of amines
    Patent number: 8318060
    Abstract: A system for microencapsulation of an amine in a polymer shell in an aqueous environment.
    Type: Grant
    Filed: July 21, 2009
    Date of Patent: November 27, 2012
    Assignee: University of New Hampshire
    Inventors: Donald C. Sundberg, John G. Tsavalas, Jonathan K. Nguyen
  • Microencapsulation of amines
    Publication number: 20100061897
    Abstract: A system for microencapsulation of an amine in a polymer shell in an aqueous environment.
    Type: Application
    Filed: July 21, 2009
    Publication date: March 11, 2010
    Inventors: Donald C. Sundberg, John G. Tsavalas, Jonathan K. Nguyen
  • Method and apparatus for reducing levels of organics in liquids
    Patent number: 4534865
    Abstract: Apparatus for reducing levels of organic contaminants present in water or other fluid. The apparatus includes a plurality of spaced activated carbon beds and a bed of cross-linked organic polymer particles (i.e., Imbiber Beads). The bed of polymer particles is serially disposed between the activated beds of carbon to receive and absorb organic contaminants when all the adsorption sites on the first activated carbon bed reach saturation. A second activated carbon bed receives and adsorbs contaminants which escape the absorption of the polymer particles. The polymer particles swell on contact with organic contaminants to decrease and then terminate flow of water or other fluid through the apparatus.
    Type: Grant
    Filed: April 24, 1984
    Date of Patent: August 13, 1985
    Inventors: Donald C. Sundberg, Paul L. Bishop, David G. McBee