Patents by Inventor Maxine Klass-Hoffman

Maxine Klass-Hoffman 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).

  • Patent number: 6548120
    Abstract: Recyclable and repulpable coated paper stock, preferably for use as ream wrap, comprising a substrate coated on at least one surface with a base coat and at least one additional coat over said base coat. Both coats are water based dispersions of a polymer selected from the group consisting of acrylic polymers, acrylic copolymers, polyvinyl acetate, polyvinyl alcohol, ethylene-vinyl acetate, polyvinyl chloride, styrene butadiene copolymers, polyvinylidiene chloride and its copolymers, or starch. The wax free coating forms a pin-hole free continuous film on the substrate which is resistant to water and water vapor. The invention also includes processes for making and recycling the invented coated paper stocks.
    Type: Grant
    Filed: November 22, 1999
    Date of Patent: April 15, 2003
    Assignee: International Paper Company
    Inventors: William A. Wittosch, David J. Romanowicz, Bruce Rose, Donna J. Wenzel, Gene W. Bartholomew, James R. Quick, Morton S. Delozier, Maxine Klass-Hoffman
  • Patent number: 5989724
    Abstract: Recyclable and repulpable coated paper stock, preferably for use as ream wrap, comprising a substrate coated on at least one surface with a base coat and at least one additional coat over said base coat. Both coats are water based dispersions of a polymer selected from the group consisting of acrylic polymers, acrylic copolymers, polyvinyl acetate, polyvinyl alcohol, ethylene-vinyl acetate, polyvinyl chloride, styrene butadiene copolymers, polyvinylidiene chloride and its copolymers, or starch. The wax free coating forms a pin-hole free continuous film on the substrate which is resistant to water and water vapor. The invention also includes processes for making and recycling the invented coated paper stocks.
    Type: Grant
    Filed: December 20, 1994
    Date of Patent: November 23, 1999
    Assignee: International Paper Company
    Inventors: William A. Wittosch, David J. Romanowicz, Bruce Rose, Donna J. Wenzel, Gene W. Bartholomew, James R. Quick, Morton S. Delozier, Maxine Klass-Hoffman
  • Patent number: 5837383
    Abstract: Recyclable and compostable coated paper stock comprising a substrate coated on at least one surface with a primer coat and a top coat both of which are water based dispersions. The primer coat comprises a water based dispersion of a polymer selected from the group comprising acrylic polymers, acrylic copolymers, polyvinyl acetate, polyvinyl alcohol, poly-ethylene vinyl acetate, poly-ethylene vinyl chloride, styrene butadiene copolymers, polyvinylidiene chloride or starch. The top coat comprises a water based dispersion of a polymer selected from the group comprising acrylic polymers, acrylic copolymers, styrene butadiene copolymers or polyvinylidiene chloride. In another embodiment the top coat further includes a wax component comprising 15-90 wt. % of the polymer and 5-85 wt. % of the wax. The substrate is coated with a primer coat prior to the application of the top coat to seal the substrate surface.
    Type: Grant
    Filed: August 15, 1994
    Date of Patent: November 17, 1998
    Assignee: International Paper Company
    Inventors: Donna J. Wenzel, Gene W. Bartholomew, James R. Quick, Morton S. Delozier, Maxine Klass-Hoffman
  • Patent number: 5763100
    Abstract: Recyclable paper stock comprising a substrate coated on at least one surface with a water based emulsion coating. The water based emulsion coating comprises 20-90 dry wt. % of an acrylic-styrene copolymer and 5-70 dry wt. % of a wax. In another embodiment a second water based emulsion coating comprised of an acrylic-styrene copolymer is coated on the substrate surface opposite the initial water based emulsion coating. The substrate may also be coated with a primer coat prior to the application of the water based emulsion coatings to seal the substrate surface. The invention also includes processes for making and using the invented acrylic coated paper stocks.
    Type: Grant
    Filed: May 10, 1993
    Date of Patent: June 9, 1998
    Assignee: International Paper Company
    Inventors: James R. Quick, Donna J. Wenzel, Gene W. Bartholomew, Morton S. Delozier, Maxine Klass-Hoffman
  • Patent number: 5654039
    Abstract: Recyclable and compostable coated paper stock comprising a substrate coated on at least one surface with a primer coat and a top coat both of which are water based dispersions. The primer coat comprises a water based dispersion of a polymer selected from the group comprising acrylic polymers, acrylic copolymers, polyvinyl acetate, polyvinyl alcohol, poly-ethylene vinyl acetate, poly-ethylene vinyl chloride, styrene butadiene copolymers, polyvinylidiene chloride or starch. The top coat comprises a water based dispersion of a polymer selected from the group comprising acrylic polymers, acrylic copolymers, styrene butadiene copolymers or polyvinylidiene chloride. In another embodiment the top coat further includes a wax component comprising 15-90 wt. % of the polymer and 5-85 wt. % of the wax. The substrate is coated with a primer coat prior to the application of the top coat to seal the substrate surface.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: August 5, 1997
    Assignee: International Paper Company
    Inventors: Donna J. Wenzel, Gene W. Bartholomew, James R. Quick, Morton S. Delozier, Maxine Klass-Hoffman