Patents by Inventor Gunter Wagerknecht

Gunter Wagerknecht 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).

  • Perfluoroalkyl group-containing (meth-)acrylate esters, their synthesis and use in dental technology
    Patent number: 5076844
    Abstract: Macromonomeric (meth-)acrylate esters, having fluoroalkyl groups are disclosed. The esters have the general formula ##STR1## wherein R.sup.1 is the same or different and represents a hydrogen or fluorine groupR.sup.2 is the same or different and represents a hydrogen or methyl group,a has a value of 0, 1, 2, 3 or 4,c has a value of 2, 3 or 4,b has an average value of 2 to 30n has an average value of 4 to 12 andm has an average value of 3 to 14.The products can be used in dentistry, preferably as relining material for dental prostheses. The esters have a lower solubility and a higher mechanical strength when cured and adhere to already cured poly(methyl methacrylate).
    Type: Grant
    Filed: September 11, 1990
    Date of Patent: December 31, 1991
    Assignee: Goldschmidt AG & GDF Gesellschaft fur Dentale Forschung u. Innovationen GmbH
    Inventors: Jurgen Fock, Gunther Hahn, Gunter Wagerknecht