Patents by Inventor Henning Hoffmann

Henning Hoffmann 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: 20220226201
    Abstract: The invention relates to a process of taking a dental impression, the process comprising the steps of providing a radiation-curable dental impression composition, placing the radiation-curable dental impression composition in contact with dental tissue, applying radiation to the radiation-curable dental impression composition, letting the radiation-curable dental impression composition cure, removing the cured dental impression composition from the dental tissue, the radiation-curable dental impression composition comprising mercapto-functional polyorganosiloxane(s), VQM resin(s), photo-initiator(s) for initiating a curing reaction between, and optionally filler(s). The invention also relates to a cured dental impression obtained by radiation curing the radiation-curable dental impression composition, a kit of parts containing the radiation-curable dental impression composition and a dental impression tray filled with the radiation-curable dental impression composition.
    Type: Application
    Filed: June 9, 2020
    Publication date: July 21, 2022
    Inventors: Henning Hoffmann, Peter U. Osswald, Peter Bissinger, Joachim W. Zech
  • Publication number: 20220112377
    Abstract: The invention relates to a radiation-curable silicone composition for additive-manufacturing technology comprising mercapto-functional polyorganosiloxane(s) as Component A, organosiloxane(s) with at least two aliphatic unsaturated carbon-carbon moieties as Component B, photo-initiator(s) as Component C for initiating a curing reaction between Component A and Component B, dye(s) as Component D dissolved in mercapto-functional polyorganosiloxane(s) as Component E, the mercapto-functional polyorganosiloxane(s) having a fraction of (mercaptoalkyl)methylsiloxane units of at least 50 mol %, wherein Component D is dissolved in Component E before Component D is combined with the other components of the radiation-curable silicone composition.
    Type: Application
    Filed: February 17, 2020
    Publication date: April 14, 2022
    Inventors: Henning Hoffmann, Peter U. Osswald
  • Patent number: 11267968
    Abstract: The invention relates to a radiation-curable silicone composition for additive-manufacturing technology comprising mercapto-functional polyorganosiloxane(s) as Component A, organosiloxane(s) with at least two aliphatic unsaturated carbon-carbon moieties as Component B, photo-initiator(s) as Component C for initiating a curing reaction between Component A and Component B, dye(s) as Component D, and at least one of the following as Component E: solvent being able to dissolve the dye(s); and/or surfactant(s) being able to dissolve the dye(s).
    Type: Grant
    Filed: January 29, 2019
    Date of Patent: March 8, 2022
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Peter Osswald, Henning Hoffmann, Hendrick Grupp, Joachim Zech, Daniel Oberpertinger, Malte Korten, Gallus Schechner
  • Patent number: 11123267
    Abstract: The invention relates to a dental composition for use as a dental retraction material comprising filler(s), paste forming liquid(s) and guanidinyl-containing polymer(s). The dental composition is typically stored in a capsule with a thin nozzle enabling the delivery of the material in the sulcus of a tooth.
    Type: Grant
    Filed: November 6, 2017
    Date of Patent: September 21, 2021
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Peter U. Osswald, Henning Hoffmann, Peter Bissinger, Joachim W. Zech, George W. Griesgraber
  • Publication number: 20210214556
    Abstract: The invention relates to a radiation-curable silicone composition for additive-manufacturing technology comprising mercapto-functional polyorganosiloxane(s) as Component A, organosiloxane(s) with at least two aliphatic unsaturated carbon-carbon moieties as Component B, photo-initiator(s) as Component C for initiating a curing reaction between Component A and Component B, dye(s) as Component D, and at least one of the following as Component E: solvent being able to dissolve the dye(s); and/or surfactant(s) being able to dissolve the dye(s).
    Type: Application
    Filed: January 29, 2019
    Publication date: July 15, 2021
    Inventors: Peter Osswald, Henning Hoffmann, Hendrick Grupp, Joachim Zech, Daniel Oberpertinger, Malte Korten, Gallus Schechner
  • Publication number: 20210214504
    Abstract: The invention relates to a process of processing a radiation-curable composition with an additive-manufacturing technique comprising a radiation-curing step, the radiation-curable composition comprising mercapto-functional Component A comprising at least three mercapto moieties, crosslinker Component B with at least three vinyl or allyl moieties, photo-initiator(s) Component C for initiating a curing reaction between Component A and Component B, wherein the radiation-curable composition does not comprise urethane (meth)acrylate oligomers in an amount of more than 4 wt. % with respect to the whole composition. 3-dim articles which can be produced are typically transparent and have adequate mechanical properties. The radiation-curable composition is in particular useful for producing clear-tray aligners for dental and orthodontic purposes.
    Type: Application
    Filed: May 20, 2019
    Publication date: July 15, 2021
    Inventors: Henning Hoffmann, Peter U. Osswald, Joachim W. Zech
  • Patent number: 10682290
    Abstract: The present invention relates to a kit of parts comprising Paste (A), Paste (B) and Paste (C), the pastes being characterized as follows: Paste (A) comprising at least one polyorganosiloxane with at least two olefinically unsaturated groups, and at least one organohydrogenpolysiloxane, at least one alkylsiloxane having at least one carbinol, silanol, alkoxy, carboxyl or amino group, optionally filler(s) and optionally additive(s); Paste (B) comprising at least one polyorganosiloxane optionally with olefinically unsaturated groups, at least one addition cure catalyst, optionally at least one alkylsiloxane having at least one carbinol, silanol, alkoxy, carboxyl or amino group, optionally filler(s) and optionally additive(s) Paste (C) comprising a softener, a condensation cure catalyst, optionally filler(s), and optionally additive(s) optionally at least one polyorganosiloxane optionally with olefinically unsaturated groups.
    Type: Grant
    Filed: May 23, 2016
    Date of Patent: June 16, 2020
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Henning Hoffmann, Peter U. Osswald, Joachim W. Zech, Andreas R. Maurer
  • Publication number: 20190358130
    Abstract: The invention relates to a curable composition for dental retraction comprising a resin matrix comprising at least one polyorganosiloxane with at least two olefinically unsaturated groups as component A1, at least one organohydrogenpolysiloxane as component A2, optionally at least one vinyl functional QM silicone component as component A3, at least one alkylsiloxane having at least one carbinol, silanol, or alkoxy moiety as component B, optionally surfactant(s) as component E, optionally additive(s) as component F, a filler system comprising filler(s) as component D, a catalyst system comprising addition cure catalyst component C-A suitable to cure components A1 and A2, condensation cure catalyst component C-B suitable to cure component B, the curable composition being provided as a kit of part comprising a Catalyst Part I and a Base Part II the Catalyst Part I comprising components C-A, C-B, A1, the Base Part II comprising components A2, A1, B, wherein each of components D, E and F and A3, if present, can be
    Type: Application
    Filed: January 15, 2018
    Publication date: November 28, 2019
    Inventors: Henning Hoffmann, Peter Osswald, Joachim Zech
  • Publication number: 20190282453
    Abstract: The invention relates to a medical composition comprising guanidinyl-containing polymer(s) and polyanionic polymer(s). The medical composition is useful for absorbing water-containing fluids and can be used as dental retraction composition or as part of a medical treatment device.
    Type: Application
    Filed: November 6, 2017
    Publication date: September 19, 2019
    Inventors: Henning Hoffmann, Peter U. Osswald
  • Publication number: 20190274929
    Abstract: The invention relates to a dental composition for use as a dental retraction material comprising filler(s), paste forming liquid(s) and guanidinyl-containing polymer(s). The dental composition is typically stored in a capsule with a thin nozzle enabling the delivery of the material in the sulcus of a tooth.
    Type: Application
    Filed: November 6, 2017
    Publication date: September 12, 2019
    Inventors: Peter U. Osswald, Henning Hoffmann, Peter Bissinger, Joachim W. Zech, George W. Griesgraber
  • Publication number: 20180125764
    Abstract: The present invention relates to a kit of parts comprising Paste (A), Paste (B) and Paste (C), the pastes being characterized as follows: Paste (A) comprising at least one polyorganosiloxane with at least two olefinically unsaturated groups, and at least one organohydrogenpolysiloxane, at least one alkylsiloxane having at least one carbinol, silanol, alkoxy, carboxyl or amino group, optionally filler(s) and optionally additive(s); Paste (B) comprising at least one polyorganosiloxane optionally with olefinically unsaturated groups, at least one addition cure catalyst, optionally at least one alkylsiloxane having at least one carbinol, silanol, alkoxy, carboxyl or amino group, optionally filler(s) and optionally additive(s) Paste (C) comprising a softener, a condensation cure catalyst, optionally filler(s), and optionally additive(s) optionally at least one polyorganosiloxane optionally with olefinically unsaturated groups.
    Type: Application
    Filed: May 23, 2016
    Publication date: May 10, 2018
    Inventors: Henning Hoffmann, Peter U. Osswald, Joachim W. Zech, Andreas R. Maurer
  • Patent number: 9549881
    Abstract: The invention is related to a dental impression composition which is curable at a temperature below about 50 C, the composition comprising: (A) a curable organopolysiloxane polymer as component (A), (B) a crosslinker compound capable of cross-linking said organopolysiloxane polymer as component (B), (C) a catalyst as component (C) capable of catalyzing a crosslinking reaction of component (A) and component (B), (D) a hydrophilizing agent as component (D), (E) a filler as component (E), (F1) a stabilizer as component (F1) selected from compounds comprising a phosphite moiety and mixtures thereof, (F2) a stabilizer as component (F2) selected from antioxidants and mixtures thereof, the composition being present in the form of a base paste and a catalyst paste physically separated from another, the base paste comprising components (A), (B), (D), (E), (F1), (F2), the catalyst paste comprising components (A), (C), (E).
    Type: Grant
    Filed: February 20, 2014
    Date of Patent: January 24, 2017
    Assignee: 3M Innovative Properties Company
    Inventors: Peter U. Osswald, Henning Hoffmann, Joachim W. Zech
  • Patent number: 9283153
    Abstract: The invention relates to a curable dental composition being prepared by mixing a base paste and a catalyst paste, “the base paste comprising component(s) (A) with curable moieties (AC),” the catalyst paste comprising a catalyst (C) being able to initiate or catalyse a crosslinking reaction involving components (A) upon mixing base paste and catalyst paste, the curable composition comprising a component (X) with reactive moieties, component (X) being either produced during the curing reaction or being present in either the base paste or the catalyst paste before the crosslinking reaction is initiated or catalysed, component X being different from component(s) (A), either base paste or catalyst paste comprising a reactant (Y), reactant (Y) being able to interact with component (X), but not taking part in the crosslinking reaction, the curable composition being able to produce energy in an amount sufficient to increase the temperature T1 of the composition being present 20 s after mixing the base paste and the c
    Type: Grant
    Filed: August 10, 2012
    Date of Patent: March 15, 2016
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Peter U. Osswald, Henning Hoffmann, Joachim W. Zech
  • Publication number: 20150374591
    Abstract: The invention is related to a dental impression composition which is curable at a temperature below about 50 C, the composition comprising: (A) a curable organopolysiloxane polymer as component (A), (B) a crosslinker compound capable of cross-linking said organopolysiloxane polymer as component (B), (C) a catalyst as component (C) capable of catalyzing a crosslinking reaction of component (A) and component (B), (D) a hydrophilizing agent as component (D), (E) a filler as component (E), (F1) a stabilizer as component (F1) selected from compounds comprising a phosphite moiety and mixtures thereof, (F2) a stabilizer as component (F2) selected from antioxidants and mixtures thereof, the composition being present in the form of a base paste and a catalyst paste physically separated from another, the base paste comprising components (A), (B), (D), (E), (F1), (F2), the catalyst paste comprising components (A), (C), (E).
    Type: Application
    Filed: February 20, 2014
    Publication date: December 31, 2015
    Inventors: Peter U. Osswald, Henning Hoffmann, Joachim W. Zech
  • Publication number: 20140228473
    Abstract: The invention relates to a curable dental composition being prepared by mixing a base paste and a catalyst paste, “the base paste comprising component(s) (A) with curable moieties (AC),” the catalyst paste comprising a catalyst (C) being able to initiate or catalyse a crosslinking reaction involving components (A) upon mixing base paste and catalyst paste, the curable composition comprising a component (X) with reactive moieties, component (X) being either produced during the curing reaction or being present in either the base paste or the catalyst paste before the crosslinking reaction is initiated or catalysed, component X being different from component(s) (A), either base paste or catalyst paste comprising a reactant (Y), reactant (Y) being able to interact with component (X), but not taking part in the crosslinking reaction, the curable composition being able to produce energy in an amount sufficient to increase the temperature T1 of the composition being present 20 s after mixing the base paste and the c
    Type: Application
    Filed: August 10, 2012
    Publication date: August 14, 2014
    Applicant: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Peter U. Osswald, Henning Hoffmann, Joachim W. Zech
  • Patent number: 8563625
    Abstract: The invention relates to hydrophilized curable silicone compositions which contain organopolysiloxanes, hydrophilizers and at least one stabilizing phosphorous compound. The compositions are particularly suitable as curable impression materials in dental applications, especially as wash impression materials.
    Type: Grant
    Filed: October 17, 2012
    Date of Patent: October 22, 2013
    Assignee: 3M Innovative Properties Company
    Inventors: Joachim Wilhelm Zech, Rainer Guggenberger, Henning Hoffmann
  • Patent number: 8466210
    Abstract: The present invention relates to a curable dental composition comprising a surfactant and an F-containing compound. The dental composition can be used e.g. as impression material and/or for the production of crown and bridges.
    Type: Grant
    Filed: December 17, 2008
    Date of Patent: June 18, 2013
    Assignee: 3M Innovative Properties Company
    Inventors: Joachim W. Zech, Peter U. Osswald, Henning Hoffmann, Andreas R. Maurer, Peter Bissinger, Klaus Hintzer
  • Patent number: 8318831
    Abstract: The invention relates to hydrophilized curable silicone compositions which contain organopolysiloxanes, hydrophilizers and at least one stabilizing phosphorous compound. The compositions are particularly suitable as curable impression materials in dental applications, especially as wash impression materials.
    Type: Grant
    Filed: June 14, 2006
    Date of Patent: November 27, 2012
    Assignee: 3M Innovative Properties Company
    Inventors: Joachim W. Zech, Rainer Guggenberger, Henning Hoffmann
  • Patent number: 8067496
    Abstract: The invention relates to curable silicone compositions which contain silane based crosslinkers and a mixture of different organopolysiloxanes. The compositions are particularly suitable as curable impression materials in dental applications.
    Type: Grant
    Filed: March 11, 2011
    Date of Patent: November 29, 2011
    Assignee: 3M Innovative Properties Company
    Inventors: Joachim W. Zech, Franziska Strauss, Henning Hoffmann, Peter Bissinger, Wolf Steiger
  • Publication number: 20110160332
    Abstract: The invention relates to curable silicone compositions which contain silane based crosslinkers and a mixture of different organopolysiloxanes. The compositions are particularly suitable as curable impression materials in dental applications.
    Type: Application
    Filed: March 11, 2011
    Publication date: June 30, 2011
    Inventors: Joachim W. Zech, Franziska Strauss, Henning Hoffmann, Peter Bissinger, Wolf Steiger