Patents by Inventor Petra Gill

Petra Gill 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).

  • Silicate-dextrin clay adhesive compositions
    Patent number: 5776242
    Abstract: Disclosed are silicate-dextrin-clay adhesive compositions and process for making the same for use in paper products, such as, paper tubes, corrugated boards and corner boards.
    Type: Grant
    Filed: November 4, 1996
    Date of Patent: July 7, 1998
    Assignee: PQ Corporation
    Inventors: Petra Gill, Michael J. McDonald, Judith L. Thompson
  • Silicate-dextrin adhesive compositions
    Patent number: 5571316
    Abstract: An adhesive composition comprising (in percent by weight) from about 0.05 to about 0.50% of sodium silicate, from about 10 to about 47% of dextrin, from about 17 to about 70% of an alkali metal silicate, from about 0.05 to about 0.50% of sodium metaborate octahydrate or sodium metaborate tetrahydrate, and from about 18.0 to about 62.0% water and a process for preparing the same. The adhesive composition is useful in the manufacture of paper products, such as, paper tubes, corrugated boards and corner boards.
    Type: Grant
    Filed: February 28, 1996
    Date of Patent: November 5, 1996
    Assignee: PQ Corporation
    Inventor: Petra Gill