Patents by Inventor Katherine C. Hlubik

Katherine C. Hlubik 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).

  • Methods for removing ink from polymeric substrates
    Patent number: 5634405
    Abstract: The present invention is directed to a method for removing ink from a substrate containing at least one synthetic polymeric resin which comprises contacting the substrate with an aqueous solution of a glycol ether for a time sufficient, and under conditions effective, to remove the ink, wherein the glycol ether may be represented by Formula (I)R.sub.1 --O--R.sub.2 --OH (I)wherein R.sub.1 and R.sub.2 are independently selected from the group consisting of alkyl groups having from 1 to about 8 carbon atoms. This invention also pertains to improved methods for preparing de-inked recycled substrates employing the aqueous solution of glycol ether.
    Type: Grant
    Filed: July 27, 1995
    Date of Patent: June 3, 1997
    Assignee: Union Camp Patent Holding Co.
    Inventors: Ajit K. Bose, Michael Hughes, Katherine C. Hlubik
  • Bag with reinforced integral handle portions
    Patent number: 5458556
    Abstract: Methods of manufacturing bags preferably from a single sheet of bag forming material and bags produced thereby having reinforced handle sections integral with the wide sides of the bag.
    Type: Grant
    Filed: July 27, 1994
    Date of Patent: October 17, 1995
    Assignee: Duro Bag Manufacturing Company
    Inventor: Katherine C. Hlubik