Patents by Inventor Thomas Luchterhandt
Thomas Luchterhandt 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: 20090035728Abstract: 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: ApplicationFiled: October 9, 2008Publication date: February 5, 2009Inventors: 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
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Publication number: 20090011388Abstract: 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: ApplicationFiled: September 19, 2008Publication date: January 8, 2009Inventors: Bradley D. Craig, Steven M. Aasen, Ahmed S. Abuelyaman, David K. Cinader, Afshin Falsafi, Reinhold Hecht, Thomas Luchterhandt, Sumita B. Mitra, Prabhakara S. Rao, Brian A. Shukla, Markus Watermann
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Patent number: 7452924Abstract: 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: GrantFiled: August 11, 2004Date of Patent: November 18, 2008Assignees: 3M Espe AG, 3M Innovative Properties CompanyInventors: Steven M. Aasen, Ahmed S. Abuelyaman, 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
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Patent number: 7449499Abstract: 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: GrantFiled: August 11, 2004Date of Patent: November 11, 2008Assignee: 3M Innovative Properties CompanyInventors: Bradley D. Craig, Steven M Aasen, Ahmed S. Abuelyaman, Reinhold Hecht, Thomas Luchterhandt, Prabhakara S. Rao, Brian A. Shukla, Markus Watermann
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Publication number: 20080241800Abstract: The present invention relates to a dental composition comprising an aqueous solution of 1) at least one acidic compound, 2) at least one salt of said acidic compound, 3) at least one indicator that generates a detectable signal when said solution reaches a particular pH value that is less than 5.5 wherein 1) and 2) are selected such that the aqueous solution has a pH of less than that particular pH value where the indicator generates the signal. It further relates to a method for detection of carious tissue on the surface of a tooth, comprising the steps of 1) providing the above mentioned dental composition, 2) applying said composition to the surface of said tooth, and 3) measuring the amount of time required for the composition to change color. It further relates to the use of said dental composition to manufacture a remedy for detection of carious tissue.Type: ApplicationFiled: May 24, 2006Publication date: October 2, 2008Inventors: Rainer Guggenberger, Thomas Luchterhandt, Ingo R. Haeberlein, Miriam Hansen
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Publication number: 20070248927Abstract: The present invention provides self-adhesive compositions that include a plurality of acidic compounds. The self-adhesive compositions are useful for applications including, for example, restoring dental structures and adhering orthodontic appliances to teeth.Type: ApplicationFiled: August 9, 2005Publication date: October 25, 2007Inventors: Thomas Luchterhandt, Reinhold Hecht, Markus Watermann, Steven Aasen
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Patent number: 7097456Abstract: The invention relates to filling systems containing as component i) a sealing system which is capable of bonding to the tooth hard substance, as component ii) a filling material suitable for restorative dentistry, the filling system containing in addition a component iii) in component i) and/or component ii) which reduces the curing of the respective other component by disturbance of the curing mechanism only in the boundary layer between sealant and filling material such that the bonding between components i) and ii) is less than the bonding of component i) to the tooth hard substance.Type: GrantFiled: October 20, 2000Date of Patent: August 29, 2006Assignee: 3M ESPE AGInventors: Karsten Dede, Oliver Frey, Oswald Gasser, Rainer Guggenberger, Thomas Luchterhandt, Wolfgang Weinmann, Thomas Klettke
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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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Publication number: 20050203207Abstract: The invention relates to dental compositions, such as dental or orthodontic adhesives, dental or orthodontic cements, or impression materials, and/or kits that contain a bitterness inhibitor. The dental compositions and kits are useful for blocking the perception of bitterness caused by a bitter tastant.Type: ApplicationFiled: January 21, 2005Publication date: September 15, 2005Inventors: Thomas Klettke, Thomas Luchterhandt, Sumita Mitra, Armineh Khachatoorian, Josef Silberg
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Publication number: 20050175965Abstract: 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: ApplicationFiled: August 11, 2004Publication date: August 11, 2005Inventors: Bradley Craig, Steven Aasen, Ahmed Abuelyaman, David Cinader, Afshin Falsafi, Reinhold Hecht, Thomas Luchterhandt, Sumita Mitra, Prabhakara Rao, Brian Shukla, Markus Watermann
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Publication number: 20050176844Abstract: 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: ApplicationFiled: August 11, 2004Publication date: August 11, 2005Inventors: Steven Aasen, Ahmed Abuelyaman, David Cinader, Hendrik Grupp, Miriam Hansen, Thomas Klettke, Guenther Lechner, Kevin Lewandowski, Thomas Luchterhandt, Sumita Mitra, Prabhakara Rao, Victoria Russell, Michael Wendland
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Publication number: 20050175966Abstract: 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: ApplicationFiled: August 11, 2004Publication date: August 11, 2005Inventors: Afshin Falsafi, Steven Aasen, Ahmed Abuelyaman, David Cinader, Bradley Craig, Reinhold Hecht, Thomas Luchterhandt, Sumita Mitra, Joel Oxman, Prabhakara Rao, Brian Shukla, Markus Watermann
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Patent number: 6835271Abstract: The invention relates to the use of adhesive systems which are radically polymerizable and contain 1-30 wt.-% of a reactive solvent with a pKS value less than or equal to that of acetone and are used for the attachment of materials which are only or also cationically polymerizable to hard tissue containing water. The adhesive systems contain at least one component i) which is capable of starting a radical reaction and one component ii) which contains radically polymerizable monomers which are acid-functional or contain groups which can form acids and optionally customary additives.Type: GrantFiled: April 5, 2002Date of Patent: December 28, 2004Assignee: 3M Espe AGInventors: Thomas Luchterhandt, Hendrik M Grupp, Rainer Guggenberger
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Patent number: 6767935Abstract: The invention relates to the utilization of an adhesive system containing at least one component i) which is capable of initiating cationic polymerization and is selected from unsaturated carbonic acids and their anhydrides or acid chlorides, unsaturated phosphoric acids and their esters, unsaturated phosphonic acids and their esters, unsaturated sulfonic acids and their esters, and strong inorganic acids, and at least one component, ii) that can undergo cationic polymerisation for the hardening of radical or cationic or radical and cationically curable materials on laminated fabric which contains water.Type: GrantFiled: June 17, 2002Date of Patent: July 27, 2004Assignee: 3M ESPE AGInventors: Thomas Luchterhandt, Rainer Guggenberger, Hendrik M. Grupp
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Patent number: 6765036Abstract: Photopolymerizable compositions comprise a cationically polymerizable resin and a photoinitiator system comprising: (i) an iodonium salt; (ii) a visible light sensitizer; and (iii) an electron donor compound having an oxidation potential less than that of 1,4-dimethoxybenzene when measured versus a saturated calomel electrode, wherein the photoinitiator system has a photoinduced potential of less than that of 3-dimethylaminobenzoic acid in a standard solution of 2.9×10−5 moles/g diphenyl iodonium hexafluoroantimonate and 1.5×10−5 moles/g camphorquinone in 2-butanone. The compositions polymerize on exposure to light in the visible spectrum and are useful in a variety of applications, including dental adhesives and dental composites.Type: GrantFiled: January 15, 2002Date of Patent: July 20, 2004Assignee: 3M Innovative Properties CompanyInventors: Karsten Dede, Thomas Klettke, Thomas Luchterhandt, Joel D. Oxman
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Patent number: 6752989Abstract: The invention concerns surface treatment agents for hard tissue, including at least one enzyme and an agent inhibiting the enzyme activity, whereby the surface treatment agent remains on the hard tissue during the application.Type: GrantFiled: January 15, 2002Date of Patent: June 22, 2004Assignee: 3M ESPE AGInventors: Ingo Häberlein, Thomas Luchterhandt, Reinhold Hecht, Oliver Frey
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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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Patent number: 6652281Abstract: Dental materials containing monomers and/or prepolymers can be subjected to a polymer-forming reaction. The dental materials comprise at least one initiating system and optionally comprise fillers, colorants, flow modifiers, stabilizers, ion-releasing substances as well as compounds which increase X-ray capacity or other modifiers. The dental materials are characterized in that the initiating system is proportioned such that the dental materials are sufficiently capable of flowing for at least 10 seconds after exposure to oxygen, whereupon they subsequently harden into a solid material.Type: GrantFiled: February 5, 2002Date of Patent: November 25, 2003Assignee: 3M ESPE AGInventors: Gunther Eckhardt, Thomas Luchterhandt, Thomas Klettke
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Publication number: 20030166737Abstract: Photopolymerizable compositions comprise a cationically polymerizable resin and a photoinitiator system comprising: (i) an iodonium salt; (ii) a visible light sensitizer; and (iii) an electron donor compound having an oxidation potential less than that of 1,4-dimethoxybenzene when measured versus a saturated calomel electrode, wherein the photoinitiator system has a photoinduced potential of less than that of 3-dimethylaminobenzoic acid in a standard solution of 2.9×10−5 moles/g diphenyl iodonium hexafluoroantimonate and 1.5×10−5 moles/g camphorquinone in 2-butanone. The compositions polymerize on exposure to light in the visible spectrum and are useful in a variety of applications, including dental adhesives and dental composites.Type: ApplicationFiled: January 15, 2002Publication date: September 4, 2003Inventors: Karsten Dede, Thomas Klettke, Thomas Luchterhandt, Joel D. Oxman