Patents by Inventor Dirk Holter

Dirk Holter 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).

  • Low shrinking polymerizable dental material
    Publication number: 20040229972
    Abstract: The invention describes a low shrinking polymerizable dental material, comprising a mixture of a polymerizable resin, a polymerizable monomer, a polymerization initiator and/or sensibilizer and a filler in a content of about 20 to about 85 percent. The volumetric shrinkage during polymerization is less than about 1.5 Vol.- % due to its rheopex behavior.
    Type: Application
    Filed: June 15, 2004
    Publication date: November 18, 2004
    Inventors: Joachim E. Klee, Uwe Walz, Dirk Holter, Armin Burgath, Holger Erey, Rolf Mulhaupt
  • Low shrinking polymerizable dental material
    Publication number: 20030125412
    Abstract: The invention describes a low shrinking polymerizable dental material, comprising a mixture of a polymerizable resin, a polymerizable monomer, a polymerization initiator and/or sensibilizer and a filler in a content of about 20 to about 85 percent. The volumetric shrinkage during polymerization is less than about 1.5 Vol.-% due to its rheopex behavior.
    Type: Application
    Filed: December 17, 2002
    Publication date: July 3, 2003
    Applicant: DENTSPLY DeTrey GmbH
    Inventors: Joachim E. Klee, Uwe Walz, Dirk Holter, Armin Burgath, Holger Erey, Rolf Mulhaupt
  • Low shrinking polymerizable dental material
    Publication number: 20020068771
    Abstract: The invention describes a low shrinking polymerizable dental material, comprising a mixture of a polymerizable resin, a polymerizable monomer, a polymerization initiator and/or sensibilizer and a filler in a content of about 20 to about 85 percent. The volumetric shrinkage during polymerization is less than about 1.5 Vol.-% due to its rheopex behavior.
    Type: Application
    Filed: December 11, 2001
    Publication date: June 6, 2002
    Applicant: DENTSPLY DeTrey GmbH.
    Inventors: Joachim E. Klee, Uwe Walz, Dirk Holter, Armin Burgath, Holger Erey, Rolf Mulhaupt
  • Liquid crystalline (meth)acrylate compounds, composition and method
    Patent number: 6339114
    Abstract: Liquid crystalline (meth)acrylates of the invention include at least three rigid rod-like moieties. One of these moieties is comprised between the (meth)acrylate rests and further two moieties are bonded as side chains. The liquid crystalline (meth)acrylates polymerizable using redox initiators and/or photo initiators. The (meth)acrylates of the invention polymerize quantitative and with very low volume shrinkage of less than 2.5 percent.
    Type: Grant
    Filed: September 8, 1999
    Date of Patent: January 15, 2002
    Assignee: Dentsply DeTrey GmbH
    Inventors: Joachim E. Klee, Holger Frey, Dirk Holter, Rolf Mulhaupt
  • Liquid crystalline (meth)acrylate compounds, composition and method
    Patent number: 5998499
    Abstract: A liquid crystalline compound, a polymeric product formed by polymerization of the liquid crystalline compound, a dental composition including the liquid crystalline compound and method of using the dental composition. Polymerization of the liquid crystalline compound results in an low volume percent shrinkage and a high conversion to polymer. The composition of the invention is useful for dental adhesive, primer, cement, pit and fissure sealant and restorative.
    Type: Grant
    Filed: October 7, 1996
    Date of Patent: December 7, 1999
    Assignee: Dentsply G.m.b.H.
    Inventors: Joachim E. Klee, Holger Frey, Dirk Holter, Rolf Mulhaupt