Patents by Inventor Stefanie Ehmke (nee Behrens Brammertz)

Stefanie Ehmke (nee Behrens Brammertz) 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).

  • Curable compositions containing color indicators for indicating the curing progress
    Patent number: 8961879
    Abstract: The invention relates to curable compositions which are prepared from polyol components containing one or more polyols and isocyanate components containing one or more isocyanates, which compositions contain at least one indicator having at least one quinonoid group, which indicator signifies the degree of curing by a change of color. The invention also relates to a method for indicating the progress of curing in such curable compositions.
    Type: Grant
    Filed: March 19, 2009
    Date of Patent: February 24, 2015
    Assignee: Mankiewicz Gebr. & Co. GmbH & Co. KG
    Inventors: Guenther John, Stefanie Ehmke (nee Behrens Brammertz)
  • CURABLE COMPOSITIONS CONTAINING COLOR INDICATORS FOR INDICATING THE CURING PROGRESS
    Publication number: 20120283373
    Abstract: Curable compositions are prepared from polyol components containing one or more polyols and isocyanate components containing one or more isocyanates, which compositions contain at least one indicator having at least one quinonoid group, which indicator signifies the degree of curing by a change of color. A method is also provided for indicating the progress of curing in such curable compositions.
    Type: Application
    Filed: July 20, 2012
    Publication date: November 8, 2012
    Applicant: MANKIEWICZ GEBR. & CO. GMBH & CO. KG
    Inventors: Guenther John, Stefanie Ehmke (nee Behrens Brammertz)