Patents by Inventor Helga H. Ulrich

Helga H. Ulrich 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: 5474818
    Abstract: A pouch suitable for packaging disposable consumer products having a pressure sensitive adhesive coated on a portion of a surface thereof. The pouch is formed from a silicone polymer coated paper with the silicone coating forming an internal surface of the pouch, thereby allowing easy removal of the product from the pouch and avoiding permanent sticking of the pressure sensitive adhesive coating to the pouch material. The silicone polymer coated paper used to form the pouch has, as a part of the composition thereof, a thermoplastic component which can be a thermoplastic basecoat, or an admixed thermoplastic polymer included in the silicone polymer coating, or a thermoplastic coating on the surface of the paper opposite the silicone coating, or combinations of these alternatives. In all cases, the thermoplastic component is provided in the form of a water-based emulsion or dispersion of a thermoplastic polymer, such as an emulsion of an ethylene vinyl acetate copolymer.
    Type: Grant
    Filed: January 26, 1993
    Date of Patent: December 12, 1995
    Assignee: International Paper
    Inventors: Helga H. Ulrich, James R. Quick, Barry L. Hess