Patents by Inventor Robert F. Steck

Robert F. Steck 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).

  • Induction sealing of paperboard
    Patent number: 4637199
    Abstract: A method and apparatus for use in form, fill, and seal machines wherein a polyfoil material is compressed between two jaws, one jaw having a secondary induction coil which passes through an electromagnetic field and induces a current in the metallic layer of the polyfoil, to heat and then seal the polyfoil.
    Type: Grant
    Filed: January 30, 1985
    Date of Patent: January 20, 1987
    Assignee: International Paper Company
    Inventors: Robert F. Steck, John L. Baartman, III
  • Induction sealing of paperboard
    Patent number: RE33467
    Abstract: A method and apparatus for use in form, fill, and seal machines wherein a polyfoil material is compressed between two jaws, one jaw having a secondary induction coil which passes through an electromagnetic field and induces a current in the metallic layer of the polyfoil, to heat and then seal the polyfoil.
    Type: Grant
    Filed: January 23, 1989
    Date of Patent: December 4, 1990
    Assignee: International Paper Company
    Inventors: Robert F. Steck, John L. Baartman, III