Patents by Inventor Klaus Bohlmann

Klaus Bohlmann 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).

  • Method for improving printability on paper or paper products with the aid of ink-jet printing method
    Patent number: 8133543
    Abstract: A process for improving the printability of paper and paper products by enhancing the water resistance of ink-jet printed images, wherein the process comprises treating the paper or paper products with aqueous solutions of cationic polymers comprising vinylamine units and having a charge density of at least 3 meq/g as the sole treatment composition in aqueous solution, wherein the sole treatment composition is applied in an amount from 0.05 to 5 g/m2 to the surface of the paper or the surface of the paper product.
    Type: Grant
    Filed: April 20, 2004
    Date of Patent: March 13, 2012
    Assignee: BASF Aktiengesellschaft
    Inventors: Friedrich Linhart, Rudi Mulder, Andreas Hopf, Klaus Bohlmann
  • Method for improving printability on paper or paper products with the aid of ink-jet printing method
    Publication number: 20070014940
    Abstract: Method for improving the printability of paper and paper products when printing with the aid of the ink-jet printing method by treating the paper or the paper products with aqueous solutions of cationic polymers having a charge density of at least 3 meq/g as the sole treatment composition in aqueous solution, the cationic polymer being applied in an amount of from 0.05 to 5 g/m2 to the surface of the paper or of the paper products, and said cationic polymers are used for improving the ink-jet printability of paper and paper products.
    Type: Application
    Filed: April 20, 2004
    Publication date: January 18, 2007
    Applicant: BASF Aktiengesellschaft
    Inventors: Friedrich Linhart, Rudi Mulder, Andreas Kasper, Klaus Bohlmann
  • Production of paper board and cardboard
    Publication number: 20050061461
    Abstract: Paper, board and cardboard are produced by draining a paper stock in the presence of at least one cationic polymer on a wire by a process in which a mixture of at least one substantially linear, cationic polyelectrolyte and an optical brightener is added to the paper stock before sheet formation, said mixture containing at least two parts by weight of the polyelectrolyte per part by weight of the optical brightener.
    Type: Application
    Filed: December 6, 2002
    Publication date: March 24, 2005
    Inventors: Friedrich Linhart, Thierry Blum, Ralf Hemel, Klaus Bohlmann