Patents by Inventor Tracy Livesey

Tracy Livesey 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).

  • Reactive azo dyes, their preparation and their use
    Patent number: 7129336
    Abstract: The present invention relates to reactive dyes of the general formula (1) where Y is a heterocyclic reactive group of the general formula (2) or (3) where X1 to X5 are each as defined in claim 1, processes for their preparation and their use for dyeing and printing hydroxyl- and/or carboxamido-containing materials.
    Type: Grant
    Filed: January 10, 2005
    Date of Patent: October 31, 2006
    Assignee: DyStar Textilfarben GmbH & Co. Deutschland KG
    Inventors: Stefan Ehrenberg, Jörg Wörner, Tracy Livesey
  • Reactive azo dyes, their preparation and their use
    Publication number: 20050159592
    Abstract: The present invention relates to reactive dyes of the general formula (1) where Y is a heterocyclic reactive group of the general formula (2) or (3) where X1 to X5 are each as defined in claim 1, processes for their preparation and their use for dyeing and printing hydroxyl- and/or carboxamido-containing materials.
    Type: Application
    Filed: January 10, 2005
    Publication date: July 21, 2005
    Applicant: DyStar Textilfarben GmbH & Co.Deutschland KG
    Inventors: Stefan Ehrenberg, Jorg Worner, Tracy Livesey