Patents by Inventor Dietmar Bunke

Dietmar Bunke 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
  • Layer Support for Recording Materials
    Publication number: 20090311515
    Abstract: A support material for recording layers comprising a raw base paper contains a hardwood pulp having a fibre fraction smaller than 200 ?m, after refining, of at most 45 wt. % and an average fibre 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: Application
    Filed: March 22, 2007
    Publication date: December 17, 2009
    Inventors: Gisela Günzel, Kerstin Hackman, Dietmar Bunke, Jörg Bömermann, Mirko Standke
  • Water-resistant photographic paper support
    Patent number: 4731291
    Abstract: A photographic paper support material for photographic purposes is disclosed with a polyolefin coating on both sides, wherein the base paper is internally sized by using a hydrophobizing sizing agent, and is surface sized with an aqueous coating mixture. The aqueous coating mixture contains a carboxyl-modified polyvinyl alcohol and optionally includes compounds with polyvalent cations. The paper support material is preferably used with such photographic layers as require wet development and wet fixing of the photographic image with photographic processing solutions.
    Type: Grant
    Filed: November 21, 1986
    Date of Patent: March 15, 1988
    Assignee: Felix Schoeller, Jr. GmbH & Co. KG
    Inventors: Alois-Bernhard Kerkhoff, Dietmar Bunke