Patents by Inventor Ervin R. Dun

Ervin R. Dun 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).

  • Photodegradable expanded polymeric foam
    Patent number: 5216036
    Abstract: Foamable photodegradable suspension polymers of vinyl aromatic monomers may be prepared by dissolving a copolymer of a vinyl aromatic monomer and a vinyl ketone in the vinyl aromatic monomer and suspension polymerizing the resulting mixture. The resulting polymer may be foamed and used in the manufacture of food containers.
    Type: Grant
    Filed: September 30, 1992
    Date of Patent: June 1, 1993
    Assignee: Novacor Chemicals (International) S.A.
    Inventors: Ervin R. Dun, John Kwok