Patents by Inventor Stefan Aechtner

Stefan Aechtner 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: 20220401195
    Abstract: An artificial tooth element which is insertable into a cavity of a prosthesis base and has an outer part and an inner part. The outer part is the part of the artificial tooth element which is visible in the inserted state. Consequently, the inner part is the part of the artificial tooth element which is not visible in the inserted state. The inner part has a surface which has, at least partially, in particular completely, a defined surface roughness.
    Type: Application
    Filed: October 20, 2020
    Publication date: December 22, 2022
    Applicant: VITA ZAHNFABRIK H. RAUTER GMBH & CO. KG
    Inventors: Eva Kolb, Stefan Aechtner, Garrit Hansen
  • Patent number: 9918908
    Abstract: Dental adhesives and their uses, for instance an adhesive containing at least one first component A and at least one second component B, characterized in that said at least one first component A comprises a methyl methacrylate, a copolymer of methyl methacrylate dissolved in excess methyl methacrylate, at least one polyfunctional (meth)acrylate and a peroxide-based free-radical initiator, wherein said copolymer of methyl methacrylate is present in an amount of 30-50 parts by weight dissolved in a solution of 65-85 parts by weight of monomeric methyl methacrylate and 3-15 parts by weight of the polyfunctional (meth)acrylate, especially the triethylene glycol dimethacrylate (TEGDMA), mixed with a solution of 0.5 to 3 parts by weight of said peroxide-based free-radical initiator, especially dibenzoyl peroxide, in 70-90 parts by weight of monomeric methyl methacrylate, and said at least one second component B comprises methyl methacrylate and a tertiary amine.
    Type: Grant
    Filed: March 10, 2014
    Date of Patent: March 20, 2018
    Assignee: Vita Zahnfabrik H. Rauter GmbH & Co. KG
    Inventor: Stefan Aechtner
  • Patent number: 9681931
    Abstract: Molded member made of form-stabilized material, comprising at least one first component and one second component, characterized in that the second component has a different pigmentation than the first component and the second component is disposed inside the first element, forming a boundary surface, in such a way that the boundary surface represents a spatially curved surface.
    Type: Grant
    Filed: December 16, 2013
    Date of Patent: June 20, 2017
    Assignee: Vita Zahnfabrik H. Rauter GmbH & Co., KG
    Inventors: Norbert Thiel, Olivia Albarski, Michael Dorn, Stefan Aechtner, Joachim Bibus, Andreas Schmid
  • Publication number: 20160015604
    Abstract: A mixture containing at least one first component A and at least one second component B, characterized in that said at least one first component A comprises a methyl methacrylate, a copolymer of methyl methacrylate dissolved in excess methyl methacrylate, optionally comprising, additionally dissolved therein, at least one polyfunctional (meth)acrylate, especially ethylene glycol dimethacrylate, butanediol dimethacrylate, hexanediol dimethacrylate, triethylene glycol dimethacrylate (TEGDMA), tetraethylene glycol dimethacrylate, diurethane dimeth-acrylate, bis(hydroxymethacryloyloxypropoxy)phenylpropane (bis-GMA), polyethylene glycol dimethacrylate, trimethylolpropane trimethacrylate, ditrimethylol-propane tetraacrylate;and a peroxide-based free-radical initiator, wherein said copolymer of methyl methacrylate is present in an amount of 30-50 parts by weight dissolved in a solution of 65-85 parts by weight of monomeric methyl methacrylate and 3-15 parts by weight of the polyfunctional (meth)acrylate, especially
    Type: Application
    Filed: March 10, 2014
    Publication date: January 21, 2016
    Inventor: Stefan Aechtner
  • Publication number: 20140106308
    Abstract: Molded member made of form-stabilized material, comprising at least one first component and one second component, characterized in that the second component has a different pigmentation than the first component and the second component is disposed inside the first element, forming a boundary surface, in such a way that the boundary surface represents a spatially curved surface.
    Type: Application
    Filed: December 16, 2013
    Publication date: April 17, 2014
    Applicant: VITA ZAHNFABRIK H. RAUTER GMBH & CO. KG
    Inventors: NORBERT THIEL, Olivia Albarski, Michael Dorn, Stefan Aechtner, Joachim Bibus, Andreas Schmid
  • Patent number: 8632889
    Abstract: Molded member made of form-stabilized material, comprising at least one first component and one second component, characterized in that the second component has a different pigmentation than the first component and the second component is disposed inside the first element, forming a boundary surface, in such a way that the boundary surface represents a spatially curved surface.
    Type: Grant
    Filed: July 21, 2009
    Date of Patent: January 21, 2014
    Assignee: Vita Zahnfabrik H. Rauter GmbH & Co. KG
    Inventors: Norbert Thiel, Olivia Albarski, Michael Dorn, Stefan Aechtner, Joachim Bibus, Andreas Schmid
  • Publication number: 20110189636
    Abstract: Molded member made of form-stabilized material, comprising at least one first component and one second component, characterized in that the second component has a different pigmentation than the first component and the second component is disposed inside the first element, forming a boundary surface, in such a way that the boundary surface represents a spatially curved surface.
    Type: Application
    Filed: July 21, 2009
    Publication date: August 4, 2011
    Inventors: Norbert Thiel, Olivia Albarski, Michael Dorn, Stefan Aechtner, Joachim Bibus, Andreas Schmid
  • Patent number: 7807227
    Abstract: A composite material with a porous inorganic-nonmetallic matrix and a second material, and a process for its production, are characterized in that the porous inorganic-nonmetallic matrix has a bending strength ?40 MPa as measured according to ISO 6 872; the second material is an organic material which at least partly fills the pores of the porous matrix; and the composite material has a modulus of elasticity, E, ?25 GPa as measured according to ISO 10 477.
    Type: Grant
    Filed: October 2, 2007
    Date of Patent: October 5, 2010
    Assignee: Vita Zahnfabrik H. Rauter GmbH & Co. KG
    Inventors: Stefan Aechtner, Helga Hornberger, Emil Nagel, Norbert Thiel
  • Publication number: 20090001623
    Abstract: A composite material with a porous inorganic-nonmetallic matrix and a second material, characterized in that said porous inorganic-nonmetallic matrix has a bending strength of ?40 MPa as measured according to ISO 6 872; said second material is an organic material which at least partly fills the pores of said porous matrix; and said composite material has a modulus of elasticity, E, of ?25 GPa as measured according to ISO 10 477.
    Type: Application
    Filed: October 2, 2007
    Publication date: January 1, 2009
    Inventors: Stefan Aechtner, Helga Hornberger, Emil Nagel, Norbert Thiel
  • Patent number: 7294392
    Abstract: A composite material with a porous inorganic-nonmetallic matrix and a second material, is characterized in that the porous inorganic-nonmetallic matrix has a bending strength of ?40 MPa as measured according to ISO 6 872; the second material is an organic material which at least partly fills the pores of the porous matrix; and the composite material has a modulus of elasticity, E, of ?25 GPa as measured according to ISO 10 477.
    Type: Grant
    Filed: March 8, 2002
    Date of Patent: November 13, 2007
    Assignee: Vita Zahnfabrik H. Rauter GmbH & Co. KG
    Inventors: Stefan Aechtner, Helga Hornberger, Emil Nagel, Norbert Thiel
  • Publication number: 20040081847
    Abstract: A composite material with a porous inorganic-nonmetallic matrix and a second material, characterized in that
    Type: Application
    Filed: October 29, 2003
    Publication date: April 29, 2004
    Inventors: Stefan Aechtner, Helga Hornberger, Emil Nagel, Norbert Thiel