Patents by Inventor Karla Marie Goff

Karla Marie Goff 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).

  • Slurry composition and method of use
    Patent number: 7300478
    Abstract: The present invention provides an aqueous slurry composition that comprises cerium oxide and/or cerium oxide-containing mixed rare earth oxide abrasive particles, a polyacrylate, and an agent that retards hard settling. The agent that retards hard settling is preferably a polysaccharide such as xanthan gum, microcrystalline cellulose and/or sodium alginate, the latter of which may be treated with a divalent metal salt such as calcium carbonate. The slurry composition according to the invention can be used to polish glass and glass ceramics at a high removal rate, but does not hard settle upon extended static conditions and can be easily resuspended. The present invention also provides a method of polishing a glass or glass ceramic substrate using the slurry composition.
    Type: Grant
    Filed: May 22, 2003
    Date of Patent: November 27, 2007
    Assignee: Ferro Corporation
    Inventors: Steven A. Ferranti, Dana L. Zagari, LeVern G. Burm, Jr., Karla Marie Goff
  • Slurry composition and method of use
    Publication number: 20040231246
    Abstract: The present invention provides an aqueous slurry composition that comprises cerium oxide and/or cerium oxide-containing mixed rare earth oxide abrasive particles, a polyacrylate, and an agent that retards hard settling. The agent that retards hard settling is preferably a polysaccharide such as xanthan gum, microcrystalline cellulose and/or sodium alginate, the latter of which may be treated with a divalent metal salt such as calcium carbonate. The slurry composition according to the invention can be used to polish glass and glass ceramics at a high removal rate, but does not hard settle upon extended static conditions and can be easily resuspended. The present invention also provides a method of polishing a glass or glass ceramic substrate using the slurry composition.
    Type: Application
    Filed: May 22, 2003
    Publication date: November 25, 2004
    Applicant: Ferro Corporation
    Inventors: Steven A. Ferranti, Dana L. Zagari, LeVern G. Burm, Karla Marie Goff