Patents by Inventor Christoph Hahn
Christoph Hahn 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).
-
Patent number: 11944692Abstract: The present invention relates to dental, light-curable, one-component composite compositions comprising (A) monomers, (B) fillers, and (C) initiators, the viscosity ?20 of which at 20° C. is greater than 400 Pa*s, preferably greater than 800 Pa*s and more preferably greater than 1200 Pa*s, and the viscosity ?50 of which at 50° C. is less than 150 Pa*s, preferably less than 120 Pa*s and more preferably less than 90 Pa*s, and wherein the quotient ?50/?20 of the viscosity of the composite composition at 50° C. and the viscosity of the composite composition at 20° C. is less than 0.125, preferably less than 0.1. The invention is preferably directed to dental composite compositions selected from the group consisting of dental filling materials, lining materials, luting materials and fissure sealants.Type: GrantFiled: June 18, 2019Date of Patent: April 2, 2024Assignee: VOCO GMBHInventors: Christoph Hahn, Gerrit Lübbe, Reinhard Maletz, Manfred Thomas Plaumann
-
Publication number: 20230192925Abstract: What is described is a dental light-curable composition for elective production of a visible restoration in the anterior region or for filling of a cavity in the posterior region, comprising a total amount (A) of free-radically polymerizable monomers, where this total amount (A) consists of one, two, three or more than three free-radically polymerizable monomers and has a refractive index nA, 470nm in the range from 1.470 to 1.560, a total amount (B1) of nonaggregated and nonagglomerated inorganic filler particles having a particle size in the range from 7 to 70 nm, where this total amount (B1) has a refractive index nB1, 470nm in the range from 1.460 to 1.570 and where this total amount (B1) is in the range from 10 to 30 percent by volume, based on the overall dental light-curable composition, a total amount (B2) of inorganic filler particles having a particle size in the range from 0.12 ?m to 10 ?m, where this total amount (B2) has a refractive index nB2,470nm in the range from 1.450 to 1.Type: ApplicationFiled: December 22, 2022Publication date: June 22, 2023Applicant: VOCO GmbHInventors: Alexander Willner, Christoph Hahn, Manfred Thomas Plaumann
-
Publication number: 20210267849Abstract: The present invention relates to dental, light-curable, one-component composite compositions comprising (A) monomers, (B) fillers, and (C) initiators, the viscosity ?20 of which at 20° C. is greater than 400 Pa*s, preferably greater than 800 Pa*s and more preferably greater than 1200 Pa*s, and the viscosity ?50 of which at 50° C. is less than 150 Pa*s, preferably less than 120 Pa*s and more preferably less than 90 Pa*s, and wherein the quotient ?50/?20 of the viscosity of the composite composition at 50° C. and the viscosity of the composite composition at 20° C. is less than 0.125, preferably less than 0.1. The invention is preferably directed to dental composite compositions selected from the group consisting of dental filling materials, lining materials, luting materials and fissure sealants.Type: ApplicationFiled: June 18, 2019Publication date: September 2, 2021Applicant: VOCO GMBHInventors: Christoph HAHN, Gerrit LÜBBE, Reinhard MALETZ, Manfred Thomas PLAUMANN
-
Patent number: 10357751Abstract: The present invention relates to a composition, comprising at least one micelle in non-aqueous solution, wherein the micelle encapsules one or more nanoparticle(s) and wherein the micelle comprises a cross-linked hydrophilic shell. Furthermore, the present invention relates to the use of such a composition and to methods for providing such a composition.Type: GrantFiled: October 13, 2015Date of Patent: July 23, 2019Assignee: FRAUNHOFER-GESELLSCHAFT ZUR FORDERUNG DER ANGEWANDTEN FORSCHUNG E.V.Inventors: Theo Schotten, Katja Werner, Carsten Ott, Jan Steffen Niehaus, Marieke Dieckmann, Horst Weller, Johannes Ostermann, Christoph Hahn
-
Patent number: 10315178Abstract: The present invention relates to a composition, comprising at least one micelle in non-aqueous solution, wherein the micelle encapsules one or more nanoparticles. Furthermore, the present invention relates to the use of such a composition and to methods for providing such a composition.Type: GrantFiled: October 13, 2015Date of Patent: June 11, 2019Assignee: FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.Inventors: Theo Schotten, Katja Werner, Carsten Ott, Jan Steffen Niehaus, Marieke Dieckmann, Horst Weller, Johannes Ostermann, Christoph Hahn
-
Patent number: 10260118Abstract: A formed and hardened component made from a metallic material is post-treated by a device for electric resistance heating that has at least one first pair of contact pieces and at least one second pair of contact pieces; contacting a first partial region of the component with the contact pieces of the first pair such that the first partial region is arranged between the contact pieces of the first pair; contacting the second partial region of the component with the contact pieces of the second pair such that the second partial region is arranged between the contact pieces of the second pair; heating of the first partial region of the component to a first temperature by conducting electric current through the component by the first pair of contact pieces; setting the second partial region of the component to a second temperature by the second pair of contact pieces, which is set independently of the first temperature.Type: GrantFiled: December 3, 2014Date of Patent: April 16, 2019Assignee: Muhr und Bender KGInventors: Hubertus Steffens, Christoph Hahn, Benedikt Goddeke
-
Patent number: 9868330Abstract: A leaf spring assembly for a wheel suspension of a motor vehicle comprises a leaf spring of fibre-reinforced plastics for resiliently supporting a wheel carrier of the motor vehicle. The leaf spring comprises a first end portion, a spring portion, a bendable portion and a second end portion. The leaf spring further comprises a first receiving device for supporting the first end portion and a second receiving device for supporting a second end portion. The first receiving device and the second receiving device are designed such that the first end portion and the second end portion are held in a non-displaceable way relative to one another. At least one of the first and second receiving devices are designed such that the respective associated end portion is supported in a moment-free way in the receiving device.Type: GrantFiled: July 23, 2014Date of Patent: January 16, 2018Assignee: Muhr und Bender KGInventors: Christoph Hahn, Rainer Forster, Vladimir Kobelev, David Muller, Lutz Manke
-
Publication number: 20170225141Abstract: The present invention relates to a composition, comprising at least one micelle in non-aqueous solution, wherein the micelle encapsules one or more nanoparticle(s) and wherein the micelle comprises a cross-linked hydrophilic shell. Furthermore, the present invention relates to the use of such a composition and to methods for providing such a composition.Type: ApplicationFiled: October 13, 2015Publication date: August 10, 2017Inventors: Theo SCHOTTEN, Katja WERNER, Carsten OTT, Jan Steffen NIEHAUS, Marieke DIECKMANN, Horst WELLER, Johannes OSTERMANN, Christoph HAHN
-
Publication number: 20170225140Abstract: The present invention relates to a composition, comprising at least one micelle in non-aqueous solution, wherein the micelle encapsules one or more nanoparticles. Furthermore, the present invention relates to the use of such a composition and to methods for providing such a composition.Type: ApplicationFiled: October 13, 2015Publication date: August 10, 2017Inventors: Theo SCHOTTEN, Katja WERNER, Carsten OTT, Jan Steffen NIEHAUS, Marieke DIECKMANN, Horst WELLER, Johannes OSTERMANN, Christoph HAHN
-
Patent number: 9533713Abstract: The present invention relates to a structural component 1; 21; 31; 41, in particular for a motor vehicle body, comprising a cold-formed first formed part 2; 32; 42 and a warm-formed and hardened second formed part 3; 23; 33 with a variable thickness along a longitudinal extension L2 of the second formed part 3; 23; 33, wherein the second formed part 3; 23; 33 has a connection portion 7; 27; 37 for being connected to the first formed part 2; 32; 42, wherein the connection portion 7; 27; 37 is distanced from an outer edge 13 of the first formed part 2; 32; 42 such, that the structural component 1; 21; 31; 41 has a one-layered flange portion 12 of the first formed part 2; 32; 42 between the connection portion 7; 27; 37 and the outer edge 13, and wherein the first formed part 2; 32; 42 and the second formed part 3; 23; 33 are connected to each other by means of a high energy beam welding seam 19 along a connection edge 18 of the connection portion 7; 17; 27.Type: GrantFiled: August 11, 2015Date of Patent: January 3, 2017Assignee: Muhr und Bender KGInventors: Hubertus Steffens, Christoph Hahn
-
Publication number: 20160159181Abstract: A leaf spring assembly for a wheel suspension of a motor vehicle comprises a leaf spring of fibre-reinforced plastics for resiliently supporting a wheel carrier of the motor vehicle. The leaf spring comprises a first end portion, a spring portion, a bendable portion and a second end portion . The leaf spring further comprises a first receiving device for supporting the first end portion and a second receiving device for supporting a second end portion. The first receiving device and the second receiving device are designed such that the first end portion and the second end portion are held in a non-displaceable way relative to one another. At least one of the first and second receiving devices are designed such that the respective associated end portion is supported in a moment-free way in the receiving device.Type: ApplicationFiled: July 23, 2014Publication date: June 9, 2016Inventors: Christoph Hahn, Rainer Forster, Vladimir Kobelev, David Muller, Lutz Manke
-
Publication number: 20160122889Abstract: A product is made from a rolled strip material with the steps: rolling of a strip material from a sheet metal; working of a blank out of the rolled strip material; forming of the blank to a formed part; cleaning the formed part such that an amount of maximal 0.7 ppm of diffusible hydrogen is introduced into the formed part by cleaning, and coating the formed part with a metal coating material for producing a corrosion protection coating, wherein the step of coating is carried out in an immersion bath with an electrolyte solution, wherein between the formed part and the electrolyte solution a flow is generated.Type: ApplicationFiled: June 17, 2014Publication date: May 5, 2016Applicant: Muhr und Bender KGInventors: Thomas Muhr, Christoph Schneider, Jörg Dieter Brecht, Christoph Hahn, Jürgen Butzkamm, Hubertus Steffens, Wolfgang Eberlein
-
Publication number: 20160046328Abstract: The present invention relates to a structural component 1; 21; 31; 41, in particular for a motor vehicle body, comprising a cold-formed first formed part 2; 32; 42 and a warm-formed and hardened second formed part 3; 23; 33 with a variable thickness along a longitudinal extension L2 of the second formed part 3; 23; 33, wherein the second formed part 3; 23; 33 has a connection portion 7; 27; 37 for being connected to the first formed part 2; 32; 42, wherein the connection portion 7; 27; 37 is distanced from an outer edge 13 of the first formed part 2; 32; 42 such, that the structural component 1; 21; 31; 41 has a one-layered flange portion 12 of the first formed part 2; 32; 42 between the connection portion 7; 27; 37 and the outer edge 13, and wherein the first formed part 2; 32; 42 and the second formed part 3; 23; 33 are connected to each other by means of a high energy beam welding seam 19 along a connection edge 18 of the connection portion 7; 17; 27.Type: ApplicationFiled: August 11, 2015Publication date: February 18, 2016Inventors: Hubertus Steffens, Christoph Hahn
-
PROCESS FOR THE PRODUCTION OF A THERMOPLASTIC FOAM SHEET VIA SYMMETRICAL BONDING OF THE INPUT SHEETS
Publication number: 20160023434Abstract: A process for the production of an at least two-layer thermoplastic foam sheet via symmetrical bonding, e.g., by thermal welding, of at least two thinner thermoplastic foam sheets to give the at least two-layer thermoplastic foam sheet. The invention further relates to thermoplastic foam sheets having at least two layers. The number of the layers of the thermoplastic foam sheet derives from the number of thin thermoplastic foam sheets that are thermally welded to one another.Type: ApplicationFiled: March 26, 2015Publication date: January 28, 2016Inventors: Dietrich SCHERZER, Klaus HAHN, Christoph HAHN, Tim DIEHLMANN, Peter MERKEL, Franz-Josef DIETZEN, Carsten SANDNER, Cathrin SCHRÖDER, Maria-Kristin SOMMER -
Patent number: 9132467Abstract: In a method of producing a connection between the neck area of a light metal cartridge, particularly an aluminium cartridge, and a plastic container inserted therein, by a drawing process that forms a connection area and applies areas of the wall of the light metal cartridge against the plastic container using a rotating main body (15) of a drawing tool (2), said main body supporting at least one profiled drawing roller (3) which can rotate about a rotation axis (5) in order to delimit a tool working opening (1), wherein the drawing roller (3) lies against the outer surface of the light metal cartridge, the rotation axis (5) of the drawing roller (3) is arranged at a tool-internal end area of a lever (9) arranged transversely relative to the longitudinal axis (16) of the drawing tool (2), said lever being supported at its opposite tool-external end area on the drawing tool (2) so as to be pivotable about a pivot axis (11) in a force-controlled manner and so as to apply the drawing roller (3) against the outerType: GrantFiled: October 8, 2009Date of Patent: September 15, 2015Assignee: Boehringer Ingelheim International GmbHInventors: Joerg Spreitzer, Christoph Hahn, Michael Huebner, Gerald Mathe, Peter Funke, Ruediger Pusch
-
Publication number: 20150159234Abstract: A formed and hardened component made from a metallic material is post-treated by a device for electric resistance heating that has at least one first pair of contact pieces and at least one second pair of contact pieces; contacting a first partial region of the component with the contact pieces of the first pair such that the first partial region is arranged between the contact pieces of the first pair; contacting the second partial region of the component with the contact pieces of the second pair such that the second partial region is arranged between the contact pieces of the second pair; heating of the first partial region of the component to a first temperature by conducting electric current through the component by the first pair of contact pieces; setting the second partial region of the component to a second temperature by the second pair of contact pieces, which is set independently of the first temperature.Type: ApplicationFiled: December 3, 2014Publication date: June 11, 2015Inventors: Hubertus Steffens, Christoph Hahn, Benedikt Goddeke
-
Patent number: 8871842Abstract: The invention relates to a method for producing at least one compound having at least one at least monosubstituted amino group. According to the invention, a starting substance having at least one amino group is reacted with an alcohol in a reaction mixture in the presence of ammonia.Type: GrantFiled: March 27, 2009Date of Patent: October 28, 2014Assignee: Borealis Agrolinz Melamine GmbHInventors: Rene Dicke, Andreas Endesfleder, Martin Burger, Christoph Hahn, Clemens Schwarzinger, Wolfgang Fuerst, Harald Schmidt
-
Patent number: 8818515Abstract: Methods and systems for delivering voltage limited neurostimulation to a patient. In one aspect, a method includes initiating a flow of electrical current through a first electrode and a second electrode coupled to the patient and increasing the flow of electrical current toward a target value by increasing a voltage across the first electrode and second electrode. Prior to reaching the target value of electrical current, the method includes preventing the voltage across the first electrode and second electrode from increasing beyond a first predetermined limit; and subsequently, maintaining the voltage across the first electrode and second electrode at or within a predetermined range that does not exceed the first predetermined limit. The amplitude of the electrical current continues to increase toward the target value during at least part of a time when the voltage across the first electrode and the second electrode is maintained within the predetermined range.Type: GrantFiled: January 13, 2012Date of Patent: August 26, 2014Assignee: Research Foundation of the City University of New YorkInventors: Marom Bikson, Christoph Hahn, Shiraz A. Macuff, Preet Minhas, Asif Rahman, Justin Keith Rice
-
Patent number: 8802848Abstract: The present invention relates to Melamine based Mannich compounds of the general formulae (1)-(12) and a process for synthesizing melamine based Mannich-products comprising the steps of a) reacting at least one substituted melamine with at least one aldehyde, in particular formaldehyde, under basic conditions to form at least one OH-containing compound, b) reacting the at least one OH-containing compound in the presence of a catalyst to form at least one mannich-base, c1) reacting the at least one mannich-base with at least one enol-forming carbonyl compound, or c2) reacting the at least one mannich-base with at least one aromatic compound, and d) working up the reaction mixture. The invention relates further to precondensates obtainable from these products.Type: GrantFiled: November 17, 2010Date of Patent: August 12, 2014Assignee: Borealis Agrolinz Melamine GmbHInventors: René Dicke, Christoph Hahn, Martin Burger, Andreas Endesfelder, Katarina Rot, Clemens Schwarzinger, Klaus Bretterbauer, Heinrich Trischler, Harald Schmidt
-
Patent number: 8569423Abstract: The present invention relates to triazine derivatives of the general formula (I), their use and production.Type: GrantFiled: May 29, 2008Date of Patent: October 29, 2013Assignee: Borealis Agrolinz Melamine GmbHInventors: Rene Dicke, Martin Burger, Christoph Hahn, Andreas Endersfelder, Clemens Schwarzinger, Klaus Bretterbauer, Harald Schmidt