Patents by Inventor Bonnie S. Zepka

Bonnie S. Zepka 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: 7563826
    Abstract: Emulsions are provided which are useful in imparting water-resistance to lignocellulosic products. In one embodiment, the emulsions contain a nonsaponifiable wax, a saponified wax, an alkyl phenol component, a dispersant/surfactant such as a salt of polynaphthalenesulfonic acid, and a carboxymethylcellulose. Such emulsions may be added to hot, even boiling, water without the emulsion separating of curdling. Various embodiments are stable for extended periods of time when stored at room temperature, do not require the addition of a preservative biocide to avoid contributing to biodegradation in a lignocellulosic product. The emulsions are pourable liquids at room temperature. Optionally, the emulsions may be added to lignocellulosic products with a preservative to inhibit the preservative from leaching out.
    Type: Grant
    Filed: May 20, 2004
    Date of Patent: July 21, 2009
    Assignee: Hexion Specialty Chemicals, Inc.
    Inventors: Steven Wantling, Bonnie S. Zepka
  • Patent number: 7473713
    Abstract: Emulsions are provided which are useful in imparting water-resistance to gypsum products. In one embodiment, the emulsions comprise at least one wax, an alkyl phenol, a salt of polynaphthalenesulfonic acid, and a complexed starch. Emulsions of this embodiment may be added to hot, even boiling, water without the emulsion separating or curdling. The emulsions of the present invention are stable for extended periods of time when stored at room temperature and do not require the addition of a bactericide. The emulsions of the present invention are pourable liquids at room temperature.
    Type: Grant
    Filed: June 5, 2003
    Date of Patent: January 6, 2009
    Assignee: Hexion Specialty Chemicals, Inc.
    Inventors: Steven Wantling, Bonnie S. Zepka
  • Patent number: 7473712
    Abstract: Emulsions are provided which are useful in imparting water-resistance to lignocellulosic composite products. In one embodiment, the emulsions comprise at least one wax, an alkyl phenol, a salt of polynaphthalenesulfonic acid, and a complexed starch. Emulsions of this embodiment may be added to hot, even boiling, water without the emulsion separating or curdling. The emulsions of the present invention are stable for extended periods of time when stored at room temperature, do not require the addition of a bactericide, and are pourable liquids at room temperature.
    Type: Grant
    Filed: June 5, 2003
    Date of Patent: January 6, 2009
    Assignee: Hexion Specialty Chemicals, Inc.
    Inventors: Steven J. Wantling, Bonnie S. Zepka