Patents Assigned to 3M ESPE AG
  • Patent number: 9220578
    Abstract: The present invention relates to a capsule for storage, mixing and dispensing of materials, preferably dental materials like glass ionomer cement. The capsule comprises a capsule body member that provides a main chamber and comprises a dispensing opening; and an applicator member being slideably accommodated in said capsule body member, said applicator member providing an auxiliary chamber. An activator member is slideably accommodated in said applicator member.
    Type: Grant
    Filed: March 10, 2005
    Date of Patent: December 29, 2015
    Assignee: 3M ESPE AG
    Inventors: Marc Peuker, Arno Hohmann, Helmut Pauser
  • Patent number: 8561845
    Abstract: Capsule (10) for two or more components of a material which are to be mixed together, comprising a cartridge (11) comprising an outlet (12), a first component chamber (13) for containing a first component, and a second component chamber (14) for containing a second component, the two chambers (13, 14) opening into the outlet (12); and a piston (15) which at least with its front end sits in the cartridge (11), lies with its rear end outside the component chambers (13, 14) and, when it is pushed forwards, presses the two components out of their component chambers (13, 14).
    Type: Grant
    Filed: December 22, 2010
    Date of Patent: October 22, 2013
    Assignees: 3M Innovative Properties Company, 3M ESPE AG
    Inventors: Dean K Reidt, Darin J Meyertholen, Bruce R Broyles, Robert Lee, Robert M Biegler, Arno Hohmann, Marc Peuker, Michael Knee
  • Patent number: 8129444
    Abstract: The invention relates to a composition which is self-adhesive to the hard tooth tissue, comprising: (A) 5 to 75 percent by weight of one or more mono or higher functional ethylenically unsaturated compounds which additionally have an acid functional group, wherein one of said compounds has a P—OH group, for instance a phosphoric, phosphonic or phosphinic acid group; (B) 2 to 50 percent by weight of one or more mono or higher functional ethylenically unsaturated compounds without any acid functional group; (C) 22.8 to 85 percent by weight of filling material(s), comprising at least one filling material that may react with component (A) in the sense of causing a ion exchange, neutralization, salt formation and/or chelate formation reaction; (D) 0.1 to 8 percent by weight of one or more initiators and optionally activators; (E) 0.1 to 20 percent by weight of further additives, for example, modifiers, wherein the weight ration in % of component (A) relative to component (B) ranges from 21 to 90: 10 to 79.
    Type: Grant
    Filed: September 6, 2005
    Date of Patent: March 6, 2012
    Assignee: 3M ESPE AG
    Inventors: Reinhold Hecht, Manfred Ludsteck, Thomas Luchterhandt, Markus Mikulla
  • Patent number: 8079466
    Abstract: The present invention is a packaging article that includes a first chamber defined by a sealed connection between a first film and a second film, a second chamber defined by a sealed connection between a third film and a fourth film, where the third film at least partially abuts the second film, and a third chamber defined by a sealed connection between the first film and the fourth film.
    Type: Grant
    Filed: March 20, 2008
    Date of Patent: December 20, 2011
    Assignees: 3M Innovatice Properties Company, 3M ESPE AG
    Inventors: Robert Lee, Brian A. Shukla, Robert W. Petrich, Arno Hohmann, Marc Peuker, John W. Dubbe
  • Patent number: 7968645
    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: May 7, 2004
    Date of Patent: June 28, 2011
    Assignee: 3M Espe AG
    Inventors: Joachim W. Zech, Franziska Strauss, Henning Hoffmann, Peter Bissinger, Wolf Steiger
  • Patent number: 7963937
    Abstract: The present invention relates to a syringe for storage, mixing and dispensing of multi-component paste materials, and more precisely to a syringe for two or more components of a paste material which are to be mixed together. The syringe may be activated so that the chambers containing the components are opened, and the components may be mixed together and extruded through a mixing tip.
    Type: Grant
    Filed: June 3, 2005
    Date of Patent: June 21, 2011
    Assignee: 3M ESPE AG
    Inventors: Helmut Pauser, Michael Knee, Ingo W. Wagner
  • Patent number: 7923485
    Abstract: The invention relates to preparations based on aziridino polymers and comprising monofunctional aziridines and to the use thereof in producing dental materials, especially impression materials.
    Type: Grant
    Filed: August 4, 2003
    Date of Patent: April 12, 2011
    Assignee: 3M ESPE AG
    Inventors: Thomas Klettke, Cornelia Führer, Adrian Eckert, Gunther Eckhardt, Erich Wanek
  • Patent number: 7882983
    Abstract: Capsule (10) for two or more components of a material which are to be mixed together, comprising a cartridge (11) comprising an outlet (12), a first component chamber (13) for containing a first component, and a second component chamber (14) for containing a second component, the two chambers (13, 14) opening into the outlet (12); and a piston (15) which at least with its front end sits in the cartridge (11), lies with its rear end outside the component chambers (13, 14) and, when it is pushed forwards, presses the two components out of their component chambers (13, 14).
    Type: Grant
    Filed: July 1, 2004
    Date of Patent: February 8, 2011
    Assignees: 3M Innovative Properties Company, 3M ESPE AG
    Inventors: Dean K Reidt, Darin J Meyertholen, Bruce R Broyles, Robert Lee, Robert M Biegler, Arno Hohmann, Marc Peuker, Michael Knee
  • Patent number: 7854721
    Abstract: The present invention relates to a syringe assembly comprising a syringe body member forming a syringe barrel having a syringe passageway passing through the length thereof; a discharge port being smaller in diameter than the syringe passageway and communicating with the syringe passageway at a front end thereof; at least one plunger member situated in the syringe barrel and dividing said syringe passageway into at least a first chamber at the front end of said syringe passageway and a second chamber at the back end of said syringe passageway, and comprising a plunger rod for actuating said plunger member; wherein said at least one plunger member being adapted for providing a flow connection between said chambers.
    Type: Grant
    Filed: August 27, 2004
    Date of Patent: December 21, 2010
    Assignee: 3M Espe AG
    Inventors: Marc Peuker, Arno Hohmann, Michael Knee
  • Patent number: 7825167
    Abstract: The invention relates to a dental composition comprising a) halogenated aryl alkyl ether component (A) comprising at least 1 aryl alkyl ether moiety, at least 1 halogen atom attached to each aryl residue of the aryl alkyl ether moieties, at least 2 unsaturated moieties, b) Si—H functional component (B), c) initiator (C), d) optionally filler (D), and e) optionally component (E) selected from modifiers, dyes, pigments, thixotropic agents, flow improvers, polymeric thickness, surfactants, odorous substances, diluting agent(s) and flavourings.
    Type: Grant
    Filed: July 14, 2004
    Date of Patent: November 2, 2010
    Assignee: 3M Espe AG
    Inventor: Adrian S. Eckert
  • Patent number: 7807730
    Abstract: The invention relates to a curable composition comprising addition curable silicone component (A) having a linear siloxane backbone at least one unsaturated, non-activated side group pendant from the Si atom or atoms in the backbone, component (A) having an equivalent weight in the range of about 68 to about 1000, crosslinker component (B) comprising at least 2 SiH groups, catalyst component (C) being able to catalyse the reaction between component (A) and component (B), filler component (D), wherein the equivalent weight is defined as (molecular weight of the molecule)/(number of unsaturations in the molecule).
    Type: Grant
    Filed: October 11, 2005
    Date of Patent: October 5, 2010
    Assignee: 3M Espe AG
    Inventors: Peter Bissinger, Joachim W. Zech
  • Patent number: 7799846
    Abstract: The present invention relates to a dental composition comprising least one carbosilane compound comprising at least one Si-Aryl bond, at least one silicon atom, no Si-Oxygen bond, at least one aliphatic epoxy moiety, wherein said carbosilane compound has no glycidyl ether moieties; and an initiator, optionally filler and optionally additive components selected from the group of modifiers, stabilizers, dyes, pigments, thixotropic agents, flow improvers, polymeric thickeners, surfactants, odorous substances, diluting agent(s) and flavorings.
    Type: Grant
    Filed: July 14, 2004
    Date of Patent: September 21, 2010
    Assignee: 3M ESPE AG
    Inventors: Adrian S. Eckert, Peter Bissinger, Karsten Dede, Thomas Klettke
  • Patent number: 7732508
    Abstract: The present invention relates to a multicomponent automixable putty impression material, its components, mixtures of the components and a method for obtaining impressions with the multicomponent automixable putty impression material.
    Type: Grant
    Filed: July 13, 2009
    Date of Patent: June 8, 2010
    Assignee: 3M ESPE AG
    Inventors: Joachim W. Zech, Peter Bissinger, Henning Hoffmann, Wolf Steiger
  • Patent number: 7700712
    Abstract: The invention provides a method to reduce evolution of hydrogen gas especially during pouring gypsum models from addition cured silicones. In this respect the invention relates to an addition curable silicone composition, comprising an addition-curable siloxane compound, a siloxane crosslinker, a catalyst and an unsaturated silane compound with at least one methylene group directly attached to the unsaturation in an amount effective to reduce the amount of hydrogen gas evolved in the reaction of said composition.
    Type: Grant
    Filed: September 3, 2004
    Date of Patent: April 20, 2010
    Assignee: 3M ESPE AG
    Inventors: Joachim W. Zech, Henning Hoffmann, Peter Bissinger, Wolf Steiger
  • Patent number: 7700666
    Abstract: The invention relates to a curable composition comprising prepolymer (A) having the formula: (L-C(?O)—O—)nP wherein L is a group represented by the following formula ?with the N,N? bridging unit being part of a heterocyclic quasi-aromatic ringsystem, optionally containing O, N or S, preferably an azolide, P is a prepolymer backbone having a molecular weight (Mn) of at least 500, n is at least 2, and crosslinker (B) comprising at least 3 nucleophilic groups. The curable composition can be used for coating, sealing, moulding, adhering, making impressions, especially in the dental field.
    Type: Grant
    Filed: June 8, 2006
    Date of Patent: April 20, 2010
    Assignee: 3M ESPE AG
    Inventors: Peter Bissinger, Thomas Klettke
  • Patent number: 7700668
    Abstract: The invention relates to adhesive compositions that exhibit a significant decrease in polarity upon polymerization. More specifically, it relates to curable self etching dental adhesive compositions that can be applied to the tooth hard substance in one step and exhibit this decrease in polarity upon curing. In this respect a formulation is provided combining phosphoric acid esters bearing substituents with one ethylenically unsaturated moiety on the phosphorus atom and phosphoric acid esters bearing substituents with two or more ethylenically unsaturated moieties on the phosphorus atom.
    Type: Grant
    Filed: July 14, 2004
    Date of Patent: April 20, 2010
    Assignee: 3M ESPE AG
    Inventors: Christoph Thalacker, Reinhold Hecht, Gioacchino Raia, Manfred Ludsteck, Karsten Dede
  • Patent number: 7699605
    Abstract: The present invention is directed to dental compositions that can be used as adhesives for bonding a dental material to a dental structure surface and/or as a dental restorative material. The dental composition is preferably applied to a dental structure surface under conditions effective to etch the dental structure surface.
    Type: Grant
    Filed: October 9, 2008
    Date of Patent: April 20, 2010
    Assignees: 3M Espe AG, 3M Innovative Properties Company
    Inventors: Steven M. Aasen, Ahmed S. Abuelyaman, David K. Cinader, Jr., Hendrik M. Grupp, Miriam Hansen, Thomas Klettke, Guenther Lechner, Kevin M. Lewandowski, Thomas Luchterhandt, Sumita B. Mitra, Prabhakara S. Rao, Victoria A. Russell, Michael S. Wendland
  • Patent number: 7674033
    Abstract: The invention relates to a dynamic mixer for mixing at least two paste components of different volume proportions. Said mixer comprises a housing with at least two inlet openings and at least one outlet opening, a mixer element being rotatably mounted in a mixing chamber of said housing. The housing has at least one delay chamber comprising a limiting wall that blocks the paste stream in the direction of flow and at least one opening that opens into the mixing chamber, said opening(s) being set back in relation to the limiting wall. The mixer is particularly suitable for mixing paste components with a relatively high viscosity of, for example, greater than 800 Pas.
    Type: Grant
    Filed: October 29, 2007
    Date of Patent: March 9, 2010
    Assignee: 3M ESPE AG
    Inventors: Helmut Pauser, Ingo Wagner
  • Patent number: 7572842
    Abstract: The present invention relates to a multicomponent automixable putty impression material, its components, mixtures of the components and a method for obtaining impressions with the multicomponent automixable putty impression material.
    Type: Grant
    Filed: July 30, 2004
    Date of Patent: August 11, 2009
    Assignee: 3M ESPE AG
    Inventors: Joachim W. Zech, Peter Bissinger, Henning Hoffmann, Wolf Steiger
  • Patent number: 7537452
    Abstract: The invention features a photopolymerizable composition that comprises a cationically polymerizable resin, and a photoinitiator system comprising an iodonium salt, a visible light sensitizer, and one or more anthracene-based compounds as electron donors. Electron donor combinations used in the invention include multiple substituted anthracene compounds or a combination of at least one substituted anthracene compound with unsubstituted anthracene.
    Type: Grant
    Filed: August 16, 2007
    Date of Patent: May 26, 2009
    Assignees: Curators of the University of Missouri, 3M Innovative Properties Company 3M Center, 3M ESPE AG
    Inventors: Joel D. Oxman, Karsten Dede, Craig A. Dykstra, Victoria A. Russell, Christoph Thalacker, Wolfgang Weinmann