Patents by Inventor Dirk Poppe

Dirk Poppe 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).

  • Publication number: 20140079841
    Abstract: The invention relates to a modified fused deposition modeling process for production of multicolored three-dimensional objects. More particularly, the invention relates to a 3D printing process with which 3D objects with particularly good color appearance compared to the prior art can be produced. The process according to the invention is based on coloring of the polymer strand used for production of the actual object in the nozzle, and on using a mixing apparatus which comprises a plurality of injection needles, a static mixer or a dynamic mixer.
    Type: Application
    Filed: April 3, 2012
    Publication date: March 20, 2014
    Applicant: Evonik Roehm GmbH
    Inventors: Markus Pridoehl, Guenter Schmitt, Dirk Poppe, Stephan Kohlstruk, Benjamin Hammann, Sonja Cremer, Kris Beks, Ludo Dewaelheyns
  • Publication number: 20130317164
    Abstract: The invention relates to a novel support material for the fused deposition modelling process for producing three-dimensional objects. The invention relates more particularly to a 3D printing process involving support materials which are easier to remove than in the prior art. The support materials according to the invention are styrene-maleic anhydride copolymers for example.
    Type: Application
    Filed: March 13, 2012
    Publication date: November 28, 2013
    Applicant: Evonik Roehm GmbH
    Inventors: Florian Hermes, Stefan Bernhardt, Dirk Poppe, Guenter Schmitt, Markus Pridoehl, Gerd Loehden
  • Publication number: 20130289164
    Abstract: The present invention comprises a novel formulation for marking trafficways, for example roads, which when compared with the prior art have improved mechanical properties and improved heat resistance during curing. The invention also relates to improved reactive resins for other applications than roadmarkings. The present invention in particular relates to reactive resins which comprise core-shell particles.
    Type: Application
    Filed: December 15, 2011
    Publication date: October 31, 2013
    Applicant: Evonik Roehm GmbH
    Inventors: Stefan Hilf, Dirk Poppe, Alexander Klein, Heike Heeb, Armin Steffan
  • Publication number: 20120157613
    Abstract: The invention relates to the synthesis of (meth)acrylate-based mass polymers which are soluble in aqueous alkaline. The invention in particular relates to the synthesis of polymers by means of a mass polymerization. Said mass polymers have a significantly improved solubility in aqueous alkaline media over corresponding polymers produced by means of a heterogeneous aqueous polymerization method, such as emulsion or suspension polymerization. Improved solubility in said context refers to the dissolution rate being faster among particles of equal size, to no significant turbidity remaining after dissolution and to the viscosity of the obtained solutions being lower at the identical ratio of solids content. Furthermore, the compatibility of the compounds according to the invention with water-based varnishes is at least comparable or even improved.
    Type: Application
    Filed: October 7, 2010
    Publication date: June 21, 2012
    Applicant: EVONIK ROEHM GmbH
    Inventors: Dirk Poppe, Wolfgang Janas, Frank Kleinsteinberg, Anja Christofzik
  • Patent number: 7553881
    Abstract: Dental material which contains at least one compound of the formula [PG]m—R1—Z—SP—Y—R2—[WG]p, in which m=1, 2 or 3; p=1, 2 or 3; R1=is absent, a linear or branched C1 to C20 alkylene radical which can be interrupted one or more times by O, S, NH, SiR?, CONH CONR?, COO and/or OCONH, a substituted or unsubstituted, aromatic C6 to C14 radical or a combination thereof R2=is absent, a linear or branched C1 to C20 alkylene radical which can be interrupted one or more times by O, S, NH, SiR?, CONH CONR?, COO and/or OCONH, a substituted or unsubstituted, aromatic C6 to C14 radical or a combination thereof; PG=a radically polymerizable group; SP=a polymeric spacer which is selected from polyethylene glycol, polypropylene glycol, polyglycerol, polyalkyloxazoline, polyethyleneimine, polyacrylic acid, polymethacrylic acid, polyvinyl alcohol, polyvinyl acetate, poly-(2-hydroxyethyl)acrylate, poly-(2-hydroxyethyl)methacrylate groups, hydrophilic polypeptide groups and copolymers of the corresponding monomers; WG=antimicrob
    Type: Grant
    Filed: August 11, 2006
    Date of Patent: June 30, 2009
    Assignee: Ivoclar Vivadent AG
    Inventors: Ulrich Salz, Jörg Zimmermann, Dirk Poppe, Volker Rheinberger, Jörg Tiller, Christian Waschinski
  • Publication number: 20070254979
    Abstract: Dental material which contains at least one compound of the formula [PG]m-R1-Z-SP—Y—R2—[WG]p, in which m=1, 2 or 3; p=1, 2 or 3; R1=is absent, a linear or branched C1 to C20 alkylene radical which can be interrupted one or more times by O, S, NH, SiR?, CONH CONR?, COO and/or OCONH, a substituted or unsubstituted, aromatic C6 to C14 radical or a combination thereof; R2=is absent, a linear or branched C1 to C20 alkylene radical which can be interrupted one or more times by O, S, NH, SiR?, CONH CONR?, COO and/or OCONH, a substituted or unsubstituted, aromatic C6 to C14 radical or a combination thereof; PG=a radically polymerizable group; SP=a polymeric spacer which is selected from polyethylene glycol, polypropylene glycol, polyglycerol, polyalkyloxazoline, polyethyleneimine, polyacrylic acid, polymethacrylic acid, polyvinyl alcohol, polyvinyl acetate, poly-(2-hydroxyethyl)acrylate, poly-(2-hydroxyethyl)methacrylate groups, hydrophilic polypeptide groups and copolymers of the corresponding monomers; WG=antimicro
    Type: Application
    Filed: August 11, 2006
    Publication date: November 1, 2007
    Applicant: IVOCLAR VIVADENT AG
    Inventors: Ulrich Salz, Jorg Zimmermann, Dirk Poppe, Volker Rheinberger, Jorg Tiller, Christian Waschinski