Patents by Inventor Manfred Ludsteck
Manfred Ludsteck 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).
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Publication number: 20220243102Abstract: The present disclosure relates to a curable precursor of an adhesive composition, comprising: a) a (meth)acrylate-based (co)polymer base component comprising the free-radical (co)polymerization reaction product of a (co)polymerizable material comprising: i. C1-C32 acrylic acid ester monomer units; ii. optionally, C1-C18 methacrylic acid ester monomer units; and iii. optionally, ethylenically unsaturated monomer units having a functional group and which are copolymerizable with monomer units (i) and/or (ii); b) a crosslinker for the (meth)acrylate-based (co)polymer base component, which comprises at least one acid-functional group derived from phosphoric acid and at least one free-radical (co)polymerizable reactive group; c) a polyether oligomer having a number average molecular weight of at least 2000 g/mol and which comprises at least one free-radical (co)polymerizable reactive group; and d) a thermally conductive particulate material.Type: ApplicationFiled: April 22, 2020Publication date: August 4, 2022Inventors: Ahmad Shaaban, Adrian Jung, Manfred Ludsteck, Adrian Eckert, Li Yao, Simon Plugge, Lingjie Tong
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Publication number: 20210085570Abstract: The invention relates to a one-part dental adhesive composition comprising polymerizable component(s) with an acidic moiety as Component A, photo-initiator(s) as Component B1, transition metal ion component(s) as Component C, solvent(s) other than water as Component D1, a stabilizer as Component E, the stabilizer comprising a free radical moiety or being selected from anaerobic stabilizers, for use in a process of fixing a composite material to the surface of hard dental tissue, the composite material comprising a redox initiator system with an oxidizing agent and a reducing agent.Type: ApplicationFiled: April 29, 2019Publication date: March 25, 2021Inventors: Christoph H. Thalacker, Karsten Dede, Henry Loll, Bernd Anich, Adrian S. Eckert, Kai U. Claussen, Manfred Ludsteck
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Patent number: 10932994Abstract: The present invention relates to a kit of parts comprising Part A and Part B, Part A comprising: ascorbic acid, component(s) comprising an ascorbic acid moiety or derivative(s) thereof, optionally polymerizable component(s) without acidic moieties, optionally polymerizable component(s) with acidic moieties, and optionally filler(s), Part B comprising polymerizable component(s) without acidic moieties, polymerizable component(s) with acidic moieties, transition metal component(s), organic peroxide(s), and optionally filler(s), The invention is also directed to a redox initiator system comprising ascorbic acid, component(s) comprising an ascorbic acid moiety or derivative(s) thereof, transition metal component(s), preferably comprising a copper or iron ion containing salt, organic peroxide(s), preferably comprising a hydroperoxide or di-peroxide. The kit of parts and redox initiator system are particularly useful in the dental field.Type: GrantFiled: July 7, 2015Date of Patent: March 2, 2021Assignee: 3M Innovative Properties CompanyInventors: Reinhold Hecht, Manfred Ludsteck, Andrea Stippschild-Boxler, Gioacchino Raia, Rainer A. Guggenberger
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Patent number: 10874594Abstract: The invention relates to a kit of parts comprising Part A and Part B, Part A comprising: component(s) comprising an ascorbic acid moiety, stabilizer(s) selected from sulphite(s), phosphite(s) or mixtures thereof, optionally polymerizable component(s) without acidic moieties, optionally polymerizable component(s) with acidic moieties, and optionally filler(s), Part B comprising polymerizable component(s) without acidic moieties, polymerizable component(s) with acidic moieties, transition metal component(s), organic peroxide(s), and optionally filler(s). The invention is also directed to an initiator system comprising component(s) comprising an ascorbic acid moiety, stabilizer(s) selected from sulphite(s), phosphite(s) or mixtures thereof transition metal component(s), organic peroxide(s). The kit of parts and redox initiator system are particularly useful in the dental and orthodontic field.Type: GrantFiled: December 7, 2016Date of Patent: December 29, 2020Assignee: 3M INNOVATIVE PROPERTIES COMPANYInventors: Manfred Ludsteck, Reinhold Hecht, Kai U. Claussen, Hubert Rennschmid, Lilly Vogel
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Publication number: 20200368117Abstract: The invention relates to a microcapsule comprising a hollow or porous core, the hollow or porous core being composed of a polymeric material and containing a component of a redox-initiator system, a shell, the shell being composed of a pH-sensitive material. The microcapsule can be used for formulating dental materials.Type: ApplicationFiled: February 1, 2019Publication date: November 26, 2020Inventors: Kai U. Claussen, Silke D. Mechernich, Mareike Richter, Reinhold Hecht, Manfred Ludsteck, Simone Jurjevic
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Publication number: 20190000721Abstract: The invention relates to a kit of parts comprising Part A and Part B, Part A comprising: component(s) comprising an ascorbic acid moiety, stabilizer(s) selected from sulphite(s), phosphite(s) or mixtures thereof, optionally polymerizable component(s) without acidic moieties, optionally polymerizable component(s) with acidic moieties, and optionally filler(s), Part B comprising polymerizable component(s) without acidic moieties, polymerizable component(s) with acidic moieties, transition metal component(s), organic peroxide(s), and optionally filler(s). The invention is also directed to an initiator system comprising component(s) comprising an ascorbic acid moiety, stabilizer(s) selected from sulphite(s), phosphite(s) or mixtures thereof transition metal component(s), organic peroxide(s). The kit of parts and redox initiator system are particularly useful in the dental and orthodontic field.Type: ApplicationFiled: December 7, 2016Publication date: January 3, 2019Inventors: Manfred Ludsteck, Reinhold Hecht, Kai U. Claussen, Hubert Rennschmid, Lilly Vogel
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Publication number: 20170216152Abstract: The present invention relates to a kit of parts comprising Part A and Part B, Part A comprising: ascorbic acid, component(s) comprising an ascorbic acid moiety or derivative(s) thereof, optionally polymerizable component(s) without acidic moieties, optionally polymerizable component(s) with acidic moieties, and optionally filler(s), Part B comprising polymerizable component(s) without acidic moieties, polymerizable component(s) with acidic moieties, transition metal component(s), organic peroxide(s), and optionally filler(s), The invention is also directed to a redox initiator system comprising ascorbic acid, component(s) comprising an ascorbic acid moiety or derivative(s) thereof, transition metal component(s), preferably comprising a copper or iron ion containing salt, organic peroxide(s), preferably comprising a hydroperoxide or di-peroxide. The kit of parts and redox initiator system are particularly useful in the dental field.Type: ApplicationFiled: July 7, 2015Publication date: August 3, 2017Inventors: Reinhold Hecht, Manfred Ludsteck, Andrea Stippschild-Boxler, Gioacchino Raia, Rainer A. Guggenberger
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Patent number: 9132069Abstract: The invention relates to a one-component self-adhesive composition for dental use comprising radically polymerizable component(s) with an acidic moiety as component A, radically polymerizable component(s) without an acidic moiety as component (B), an oxidizing agent comprising persulfate(s) as component (C), transition metal component(s) as component (D), photoinitiator system(s) as component (E), optionally non acid-reactive filler(s) as component (F), and optionally additive(s) as component (G).Type: GrantFiled: November 30, 2012Date of Patent: September 15, 2015Assignee: 3M Innovative Properties CompanyInventors: Reinhold Hecht, Andrea Stippschild, Vitore Hasanaj, Gioacchino Raia, Manfred Ludsteck, Rainer Guggenberger
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Publication number: 20140329205Abstract: The invention relates to a one-component self-adhesive composition for dental use comprising radically polymerizable component(s) with an acidic moiety as component A, radically polymerizable component(s) without an acidic moiety as component (B), an oxidizing agent comprising persulfate(s) as component (C), transition metal component(s) as component (D), photoinitiator system(s) as component (E), optionally non acid-reactive filler(s) as component (F), and optionally additive(s) as component (G).Type: ApplicationFiled: November 30, 2012Publication date: November 6, 2014Inventors: Reinhold Hecht, Andrea Stippschild, Vitore Hasanaj, Gioacchino Raia, Manfred Ludsteck, Rainer Guggenberger
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Publication number: 20120270962Abstract: This invention relates to polymerizable compositions comprising a salt of a barbituric acid derivative. The compositions are typically shelf-life stable and may be polymerized through mixing of an acidic component with the salt of a barbituric acid derivative.Type: ApplicationFiled: July 3, 2012Publication date: October 25, 2012Inventors: REINHOLD HECHT, Manfred Ludsteck, Gioacchino Raia, Joel D. Oxman
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Patent number: 8236871Abstract: This invention relates to polymerizable compositions comprising a salt of a barbituric acid derivative. The compositions are typically shelf-life stable and may be polymerized through mixing of an acidic component with the salt of a barbituric acid derivative.Type: GrantFiled: May 31, 2007Date of Patent: August 7, 2012Assignee: 3M Innovative Properties CompanyInventors: Reinhold Hecht, Manfred Ludsteck, Gioacchino Raia, Joel D. Oxman
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Patent number: 8129444Abstract: 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: GrantFiled: September 6, 2005Date of Patent: March 6, 2012Assignee: 3M ESPE AGInventors: Reinhold Hecht, Manfred Ludsteck, Thomas Luchterhandt, Markus Mikulla
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Publication number: 20100167231Abstract: The invention includes a piston having a piston body (1) and front seal for sealing the gap between the side wall of the piston body and the wall of a chamber within which the piston and a material are disposed in a conventional manner. The front seal (5) has a leading edge (6) included angle (A) as defined below, and a trailing edge (7) included angle (B) that is smaller than the leading edge included angle. By the appropriate selection of these two angles, the force required to move the piston (and thus the material) is optimized, the force required to move the piston (and thus the material) is optimized, which results in a more useful dispenser than conventional syringe-type dispensers. These and other features of the present invention are described in greater detail below.Type: ApplicationFiled: November 21, 2007Publication date: July 1, 2010Inventors: John W. Dubbe, Gioacchino Raia, Hecht Reinhold, Manfred Ludsteck, Bruce R. Broyles, Henry C. Gydesen, Dirk Albrecht, Helmut Pauser
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Patent number: 7700668Abstract: 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: GrantFiled: July 14, 2004Date of Patent: April 20, 2010Assignee: 3M ESPE AGInventors: Christoph Thalacker, Reinhold Hecht, Gioacchino Raia, Manfred Ludsteck, Karsten Dede
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Publication number: 20090192239Abstract: This invention relates to polymerizable compositions comprising a salt of a barbituric acid derivative. The compositions are typically shelf-life stable and may be polymerized through mixing of an acidic component with the salt of a barbituric acid derivative.Type: ApplicationFiled: May 31, 2007Publication date: July 30, 2009Inventors: Reinhold Hecht, Manfred Ludsteck, Gioacchino Raia, Joel D. Oxman
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Publication number: 20060270751Abstract: 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: ApplicationFiled: July 14, 2004Publication date: November 30, 2006Inventors: Christoph Thalacker, Reinhold Hecht, Gioacchino Raia, Manfred Ludsteck, Karsten Dede
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Publication number: 20060004122Abstract: 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: ApplicationFiled: September 6, 2005Publication date: January 5, 2006Applicant: 3M ESPE AGInventors: Reinhold Hecht, Manfred Ludsteck, Thomas Luchterhandt, Markus Mikulla
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Patent number: 6953535Abstract: The invention relates to a redox initiator system which allows dental formulations to be cured in acidic medium by way of a free-radical polymerization and which ensures a high level of adhesion of the polymerizing composition to the hard substances of the teeth, namely enamel and, in particular, dentine. The redox initiator system comprises the following constituents: (A) from 14.9 to 50% by weight of a barbituric acid or thiobarbituric acid and/or of a barbituric or thiobarbituric acid derivative, (B) from 30 to 75% by weight of a peroxodisulfate compound and/or peroxodiphosphate compound, (C) from 10 to 35% by weight of a sulfinic acid compound, and (D) from 0.1 to 5% by weight of a copper compound.Type: GrantFiled: May 13, 2002Date of Patent: October 11, 2005Assignee: 3M Espe AgInventors: Reinhold Hecht, Manfred Ludsteck
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Publication number: 20040110864Abstract: 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: ApplicationFiled: November 14, 2003Publication date: June 10, 2004Inventors: Reinhold Hecht, Manfred Ludsteck, Thomas Luchterhandt, Markus Mikulla
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Publication number: 20040097613Abstract: The invention relates to a redox initiator system which allows dental formulations to be cured in acidic medium by way of a free-radical polymerization and which ensures a high level of adhesion of the polymerizing composition to the hard substances of the teeth, namely enamel and, in particular, dentine.Type: ApplicationFiled: November 14, 2003Publication date: May 20, 2004Inventors: Reinhold Hecht, Manfred Ludsteck