Patents by Inventor Hermann Jaksch

Hermann Jaksch 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).

  • Process for producing polymethylmethacrylate molding materials with a neutral color
    Patent number: 6765046
    Abstract: Products based on polymethylmethacrylate (PMMA) so resistant to yellowing and so highly transparent that even the edges of plates produced from this material have a neutral colour, i.e. do not display any yellow tone. This effect is obtained by the admixture of 5 to 50 ppm inorganic, reducing phosphorus compounds after polymerisation. This enables the brightener content to be reduced under 10 ppb, and so the end product may also be used in contact with foodstuffs.
    Type: Grant
    Filed: September 3, 1999
    Date of Patent: July 20, 2004
    Assignee: Roehm GmbH & Co. KG
    Inventors: Uwe Numrich, Michael Wicker, Klaus Albrecht, Heinz Vetter, Hermann Jaksch, Ernst Mohr
  • (Methyl) methacrylate maleic acid anhydride copolymers as polymer modifying agents for plastics and mixtures and polymer composites produced therewith
    Patent number: 6218467
    Abstract: The invention concerns a mixture or polymer composite of a copolymer (CP) comprising between 70 and 99.9 wt % methylmethacrylate, between 0.1 and 5 wt % maleic acid anhydride and between 0 and 25 wt % further vinylically copolymerizable monomers which, apart from the vinyl function, have no further function groups, with a polymethacrylate-compatible plastics (VK) and a polymer (PN) which contains at least one terminal nucleophilic groups.
    Type: Grant
    Filed: August 16, 1999
    Date of Patent: April 17, 2001
    Assignee: Roehm GmbH
    Inventors: Michael Wicker, Uwe Numrich, Michael May, Hermann Jaksch, Mona Rueppel