Patents by Inventor Andre Rumphorst

Andre 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).

  • 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
  • Patent number: 6450717
    Abstract: An applicator kit, for dental purposes. has an application element with a grip area for handling, and also has a shaft, on a tip of which is disposed an application member, preferably in the form of a micro-brush that is provided with a reaction substance. A cup shaped sealing mechanism surrounds the shaft and the application member. The cup shaped sealing mechanism is slidably received within a housing which also receives a low velocity fluid initially spaced away from the cup-shaped sealing mechanism. The reaction substance on the application member is activated by pressing the sealing mechanism and application member into the fluid within the housing which causes the fluid to wet the application member.
    Type: Grant
    Filed: October 24, 2000
    Date of Patent: September 17, 2002
    Assignee: Ivoclar AG.
    Inventors: Ulrich Salz, Andre Rumphorst, Alexandros Gianasmidis, Frank Muller, Volker Rheinberger
  • Patent number: 6394803
    Abstract: A mixing arrangement and method for mixing a substance for the field of dentistry are provided, with the production of the substance requiring at least one base material and one reactant. A catalyst is applied to a base surface as reactant in a solid or semi-solid layer. The unit comprising catalyst and base is prefabricated, and the base material, particularly in liquid form, can be applied or introduced to the base surface that is provided with the catalyst prior to using the substance. The substance can be applied ready for use by means of an application element after the catalyst and base material have been mixed.
    Type: Grant
    Filed: October 24, 2000
    Date of Patent: May 28, 2002
    Assignee: Ivoclar AG
    Inventors: Ulrich Salz, Andre Rumphorst, Alexandros Gianasmidis, Frank Muller, Volker Rheinberger
  • 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
  • Publication number: 20020016384
    Abstract: Hydrolysis-stable and polymerizable acrylophosphonic acid with the general formula (I) 1
    Type: Application
    Filed: April 13, 2001
    Publication date: February 7, 2002
    Applicant: Ivoclar Vivadent AG.
    Inventors: Norbert Moszner, Andre Rumphorst, Volker Rheinberger, Frank Zeuner
  • 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