Patents by Inventor Kerstin Hackmann

Kerstin Hackmann 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).

  • Layer support for recording materials
    Patent number: 7993757
    Abstract: A support material for recording layers comprising a raw base paper contains a hardwood pulp having a fiber fraction smaller than 200 ?m, after refining, of at most 45 wt. % and an average fiber length of 0.4 to 0.8 mm and a filler fraction of 5 to 40 wt. %, in particular 10 to 25 wt. %, relative to the mass of the pulp.
    Type: Grant
    Filed: March 22, 2007
    Date of Patent: August 9, 2011
    Assignee: Felix Schoeller Jr. Foto-und Spezialpapiere GmbH & Co. KG
    Inventors: Gisela Günzel, Kerstin Hackmann, Dietmar Bunke, Jörg Bömermann, Mirko Standke