Patents by Inventor Rita E. Porzel

Rita E. Porzel 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: 4273688
    Abstract: A viscosity stable, stainable, wood textured, aqueous latex composition comprises from 5% to 30% of the weight of the composition of wood particles having sorbed therein a water immiscible organic solvent in an amount of at least about 60% of the weight of the wood to provide a free-flowing, solvent-wet powder, an aqueous emulsion of film-forming plasticized resin particles coalescable at room temperature or below; the proportion of wood particles, the resin solids content of the aqueous emulsion and the plasticization of the resin particles providing a viscous mass, and the organic solvent sorbed in the wood particles providing viscosity stability.
    Type: Grant
    Filed: December 3, 1979
    Date of Patent: June 16, 1981
    Assignee: DeSoto, Inc.
    Inventors: Rita E. Porzel, Cathryn D. Bator
  • Patent number: 4202804
    Abstract: A viscosity stable, stainable, wood textured aqueous latex caulking composition is disclosed in which wood particles have sorbed therein, water immiscible organic solvent providing a free-flowing, solvent-wet powder. An aqueous emulsion of film-forming resin particles is mixed in and an oily plasticizer for the resin particles is added to provide a T.sub.g below about -40.degree. C. unless the resin particles are internally plasticized. The proportion of wood particles, the solids content of the aqueous emulsion and the proportion of oily plasticizer or other thickener provides a viscous mass of gunable viscosity.
    Type: Grant
    Filed: September 11, 1978
    Date of Patent: May 13, 1980
    Assignee: DeSoto, Inc.
    Inventors: Rita E. Porzel, Cathryn D. Bator