Patents by Inventor André Rumphorst

André Rumphorst 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).

  • Hydrolysis-stable and polymerizable acrylophosphonic acid
    Patent number: 6710149
    Abstract: Hydrolysis-stable and polymerizable acrylophosphonic acid with the general formula (I) which is particularly suitable as a component of dental materials is disclosed.
    Type: Grant
    Filed: April 13, 2001
    Date of Patent: March 23, 2004
    Assignee: Ivoclar Vivadent AG
    Inventors: Norbert Moszner, André Rumphorst, Volker Rheinberger, Frank Zeuner
  • Polymerizable composite material
    Patent number: 6353039
    Abstract: A composite material is described which contains polymerizable monomers plus a special transparent glass having high release of calcium ions and fluorine ions and, because of this release property and in particular of its optical properties, can be used as a restoration material in dentistry.
    Type: Grant
    Filed: December 11, 1998
    Date of Patent: March 5, 2002
    Assignee: Ivoclar AG
    Inventors: Volker Rheinberger, Ulrich Salz, Wolfram Höland, André Rumphorst, Kurt Grabher, Urs Karl Fischer, Marcel Schweiger, Norbert Moszner
  • Radically polymerizable dental material
    Patent number: 6281271
    Abstract: The invention relates to a dental material with at least one polymerizable binder and at least one filler containing a redox-initiator system for the radical polymerization, which comprises an initiator and an activator. The material is characterized in that the filler contains a homogeneous mixture of a first part of the filler, which is mixed with the initiator, a second part of the filler, which is mixed with the activator, and a third part of the filler, which does not contain a component of the initiator system. The materials are particularly suitable as cements and filling materials.
    Type: Grant
    Filed: April 22, 1999
    Date of Patent: August 28, 2001
    Assignee: Ivoclar AG
    Inventors: André Rumphorst, Ulrich Salz, Alexandros Gianasmidis, Thomas Völkel, Volker Rheinberger, Norbert Moszner