Patents by Inventor Robert S. Zirlis

Robert S. Zirlis 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).

  • Polyurethane foam generating apparatus
    Patent number: 3962120
    Abstract: An improved apparatus is disclosed for the on-site generation of polyurethane foam. The apparatus comprises a timing device, which is readily accessible to the foaming operator, for accurately controlling the size of each foam shot.
    Type: Grant
    Filed: April 28, 1975
    Date of Patent: June 8, 1976
    Assignee: Olin Corporation
    Inventors: Louis R. Chiocchio, Robert S. Zirlis