Patents by Inventor Harry L. Frisch

Harry L. Frisch 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).

  • Interpenetrating polymeric networks
    Patent number: 4302553
    Abstract: Synthetic resins having a topologically interpenetrating polymeric network comprise macrocyclic structures of chemically different, crosslinking polymers which are permanently entangled with each other. The several macrocyclic structures that are present are characterized by the absence of chemical bonds between the individual networks.
    Type: Grant
    Filed: November 2, 1972
    Date of Patent: November 24, 1981
    Assignees: Harry L. Frisch, Kurt C. Frisch, Daniel Klempner
    Inventors: Harry L. Frisch, Kurt C. Frisch, Daniel Klempner