Patents by Inventor Karin Hofmann

Karin Hofmann 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).

  • Polymer-based pigment-bearing ink
    Patent number: 9445982
    Abstract: A cosmetic water-based ink containing at least one acryl-based polymer, at least one polymeric ionic thickener, at least one anionic or amphoteric-ionic surfactant, at least one material in particle form and at least one non-ionic surfactant, wherein the non-ionic surfactant is a compound which contains between 4 and 8 units of PEG or PPG and a C6-C20 fatty acid residue.
    Type: Grant
    Filed: May 21, 2008
    Date of Patent: September 20, 2016
    Assignee: Schwan-STABILO Cosmetics GmbH & Co. KG
    Inventors: Barbara Bauer, Karin Hofmann
  • POLYMER-BASED PIGMENT-BEARING INK
    Publication number: 20080292570
    Abstract: A cosmetic water-based ink containing at least one acryl-based polymer, at least one polymeric ionic thickener, at least one anionic or amphoteric-ionic surfactant, at least one material in particle form and at least one non-ionic surfactant, wherein the non-ionic surfactant is a compound which contains between 4 and 8 units of PEG or PPG and a C6-C20 fatty acid residue.
    Type: Application
    Filed: May 21, 2008
    Publication date: November 27, 2008
    Applicant: SCHWAN-STABILO COSMETICS GMBH & CO. KG
    Inventors: Barbara Bauer, Karin Hofmann