Patents by Inventor Thomas Buesgen

Thomas Buesgen 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: 12195577
    Abstract: A method for producing an object comprises the step of producing the object by means of an additive manufacturing process from a construction material. The construction material comprises a first polyurethane polymer which has: a weight percentage ratio of O to N of ?2 to ?2.5, determined by elementary analysis; a weight percentage ratio of N to C of ?0.1 to ?0.25, determined by elementary analysis; a full-width at half maximum of the melting peak of ?20 K, determined by dynamic differential scanning calorimetry DSC (2nd heating at heating rate 20 k/min); and a difference between the melting temperature and the recrystallisation temperature of ?5 K and ?100 K, determined by dynamic differential scanning calorimetry DSC (2nd heating) at a heating and cooling rate of 20 K/min.
    Type: Grant
    Filed: December 14, 2020
    Date of Patent: January 14, 2025
    Assignee: Stratasys, Inc.
    Inventors: Dirk Achten, Thomas Buesgen, Mathias Matner, Bettina Mettmann, Bernd Garska, Michael Kessler, Peter Reichert, Roland Wagner, Thomas Prenveille
  • Publication number: 20250002627
    Abstract: A resin comprises: A) a multifunctional (meth)acrylate; B) an NCO-functional polyurethane; C) a radical starter and D) a catalyst. The multifunctional (meth)acrylate A) has a viscosity at 23° C. as determined according to DIN EN ISO 2884-1 of ?10000 mPa·s, the NCO-functional polyurethane B) has an average NCO group functionality of ?2 and an equivalent molecular weight with respect to NCO groups of >300 g/mol, the catalyst D) is an isocyanate trimerization catalyst and the resin is free from NCO-reactive compounds or, if NCO-reactive compounds are present in the resin, the molar ratio of NCO groups to NCO-reactive groups is ?5:1.
    Type: Application
    Filed: June 30, 2022
    Publication date: January 2, 2025
    Inventors: Anne FISCHER, Thomas BUESGEN, Dirk ACHTEN, Jan SUETTERLIN
  • Patent number: 12168319
    Abstract: The invention relates to a method for applying a material containing a meltable polymer comprising the step of applying a filament of the at least partially molten material from a discharge opening of a discharge element onto a substrate. The meltable polymer has the following properties: —a melting point (DSC, differential scanning calorimetry; second heating with a heating rate of 5° C./min) in a range from ?40° C. to ?120° C.; —a glass transition temperature (DMA, dynamic mechanical analysis in accordance with DIN EN ISO 6721-1:2011) in a range from ??70° C. to ?30° C.; —a storage modulus G? (parallel plate oscillation viscometer in accordance with ISO 6721-10:2015 at a frequency of 1/s) at 20° C. above the melting point of ?1·104 Pa; —a storage modulus G? (parallel plate oscillation viscometer in accordance with ISO 6721-10:2015 at a frequency of 1/s) at 10° C. below the melting point with prior heating to a temperature of 20° C. above the melting point and subsequent cooling with a cooling rate of 1° C.
    Type: Grant
    Filed: February 13, 2019
    Date of Patent: December 17, 2024
    Assignee: Covestro Intellectual Property GmbH & Co. KG
    Inventors: Dirk Achten, Thomas Buesgen, Joerg Tillack, Peter Reichert, Nicolas Degiorgio, Martin Melchiors, Wolfgang Arndt
  • Publication number: 20240409751
    Abstract: A resin comprises: A) a multifunctional (meth)acrylate; B) an NCO-functional polyurethane; C) a radical starter and D) a catalyst. The multifunctional (meth)acrylate A) has a viscosity at 23° C. as determined according to DIN EN ISO 2884-1 of ?10000 mPa·s, the NCO-functional polyurethane B) has an average NCO group functionality of ?2 and an equivalent molecular weight with respect to NCO groups of >300 g/mol. The resin is free from isocyanate trimerization catalysts and the resin is free from NCO-reactive compounds or, if NCO-reactive compounds are present in the resin, the molar ratio of NCO groups to NCO-reactive groups is ?5:1.
    Type: Application
    Filed: October 10, 2022
    Publication date: December 12, 2024
    Inventors: Anne Fischer, Dirk Achten, Thomas Buesgen, Jan Suetterlin, Jan Weikard
  • Patent number: 12070368
    Abstract: The present invention relates to an orthodontic splint made of a crosslinked polymer, wherein the crosslinked polymer has a glass transition temperature Tg, determined by means of dynamic-mechanical analysis at a frequency of 1/s DMA as peak tan ?, of ?25° C. and ?60° C., a modulus of elasticity, determined by means of dynamic-mechanical analysis as the storage modulus E? at a frequency of 1/s at 35° C., of ?500 MPa and ?4000 MPa, and a loss factor tan ?, determined by means of dynamic-mechanical analysis at a frequency of 1/s at 35° C., of ?0.08. The invention further relates to a process for producing such splints.
    Type: Grant
    Filed: September 18, 2019
    Date of Patent: August 27, 2024
    Assignee: Stratasys Inc.
    Inventors: Dirk Achten, Roland Wagner, Christoph Tomczyk, Thomas Buesgen
  • Publication number: 20240239946
    Abstract: A resin comprises: A) a (meth)acrylate-functional compound; B) a polyisocyanate; C) a radical starter and D) a catalyst. The compound A) has an equivalent molecular weight with respect to (meth)acrylate C?C double bonds of ?500 g/mol and an average number of (meth)acrylate groups per molecule of ?1.8 to ?2.2, the polyisocyanate B) has an average NCO group functionality of ?2 and an equivalent molecular weight with respect to NCO groups of ?300 g/mol, the catalyst D) is an isocyanate trimerization catalyst and the resin is free from NCO-reactive compounds or, if NCO-reactive compounds are present in the resin, the molar ratio of NCO groups to NCO-reactive groups is ?5:1. Such resins may form hybrid polymer networks.
    Type: Application
    Filed: May 16, 2022
    Publication date: July 18, 2024
    Applicant: Stratasys, Inc.
    Inventors: Anne FISCHER, Thomas BÜSGEN, Dirk ACHTEN
  • Patent number: 12036737
    Abstract: The present invention relates to a method for functionalizing a workpiece surface, comprising the following steps: a) providing a workpiece; b) providing a film; c) functionalizing at least one film side by the location-selective application of a functionalization composition comprising a polymer material onto part of the film side in one or more layers by means of a 3D printing process; d) creating an integrally bonded or interlocking connection between the workpiece surface and the film functionalized in step c) by bringing the film into contact with at least part of the workpiece surface, wherein the integrally bonded or interlocking connection to the workpiece surface is achieved with a functionalized film side. The invention further relates to workpieces having a surface functionalized according to the invention.
    Type: Grant
    Filed: December 2, 2019
    Date of Patent: July 16, 2024
    Assignee: Stratasys, Inc.
    Inventors: Dirk Achten, Nicolas Degiorgio, Jonas Kuenzel, Jari Birth, Thomas Buesgen
  • Patent number: 11981095
    Abstract: The invention relates to a method for producing an at least partially coated object, comprising the step of producing the object from a construction material by means of an additive manufacturing method, the construction material comprising a thermoplastic polyurethane material. Following the production of the object, the method comprises the step of at least partially bringing a preparation into contact with the object, the preparation being selected from: an aqueous polyurethane dispersion; an aqueous dispersion of a polymer comprising OH groups, this dispersion also containing a compound comprising NCO groups; an aqueous preparation of a compound containing NCO groups, but not containing any polymers comprising OH groups; or a combination of at least two thereof. The invention also relates to an at least partially coated object that was obtained by a method according to the invention.
    Type: Grant
    Filed: November 22, 2017
    Date of Patent: May 14, 2024
    Assignee: Stratasys, Inc.
    Inventors: Dirk Achten, Thomas Büsgen, Thomas Michaelis, Roland Wagner, Bettina Mettmann, Levent Akbas, Jürgen Hättig, Arnaud Guedou
  • Patent number: 11910931
    Abstract: It is a feature of a porous body (10, 20) comprising a three-dimensional network of node points (200) joined to one another by struts (100), and a void volume (300) present between the struts (100), that the struts (100) have an average length of ?200 to ?50 mm, the struts (100) have an average thickness of ?100 ?m to ?5 mm, and that the porous body has a compression hardness (40% compression, DIN EN ISO 3386-1: 2010-09) in at least one spatial direction of ?10 to ?100 kPa. The porous body according to the invention combines the advantages of a conventional mattress or cushion with ventilatability which results from its porous structure and is not achievable in conventional foams. The invention further relates to a method of producing such a porous body (10, 20) and to an apparatus comprising said body (10, 20) for supporting and/or bearing a person.
    Type: Grant
    Filed: September 8, 2017
    Date of Patent: February 27, 2024
    Assignee: Stratasys, Inc.
    Inventors: Dirk Achten, Thomas Büsgen, Dirk Dijkstra, Nicolas Degiorgio, Roland Wagner, Levent Akbas, Peter Reichert, Jürgen Hättig
  • Patent number: 11905360
    Abstract: The invention relates to a method for producing a polymer comprising the following steps: (A) depositing a radically cross-linkable resin, obtaining a radically cross-linked resin; and (B) treating the radically cross-linked resin under conditions which are sufficient to trigger a chemical reaction that is different from the radical cross-linking in the radically cross-linked resin. The radically cross-linkable resin comprises a curable component, in which there are NCO groups, olefinic C?C double bonds and epoxide groups, and the chemical reaction in the radically cross-linked resin that is different from the radical cross-linking is the reaction of NCO groups and epoxide groups to form oxazolidinone groups.
    Type: Grant
    Filed: October 12, 2018
    Date of Patent: February 20, 2024
    Assignee: STRATASYS, INC.
    Inventors: Dirk Achten, Thomas Buesgen, Roland Wagner, Florian Stempfle, Christoph Tomczyk
  • Patent number: 11833749
    Abstract: The present invention relates to a method for producing a treated object, comprising the steps of: applying a layer of particles to a target area; applying a liquid binder to a selected portion of the layer in accordance with a cross-section of the object, so that the particles in the selected portion are bonded; repeating the steps of applying a layer of particles and applying a binder for a plurality of layers so that the bonded portions of the adjacent layers are bonded to form an object, wherein at least a part of the particles comprises a meltable polymer. A binder which cures by cross-linking is preferably selected as the binder. The obtained object is at least partially contacted with a liquid heated to ?T or with a powder bed heated to ?T in order to obtain the treated object. T represents a temperature of ?25° C.
    Type: Grant
    Filed: December 18, 2018
    Date of Patent: December 5, 2023
    Assignee: STRATASYS, INC.
    Inventors: Dirk Achten, Thomas Buesgen, Roland Wagner, Jonas Kuenzel, Michael Kessler, Bettina Mettmann
  • Patent number: 11835103
    Abstract: A deformable body, wherein the body is constructed from a multiplicity of layers of a polymer construction material and in which a construction direction is defined perpendicular to the layers. The body preferably comprises layers with a multiplicity of curve pairs (10) which are formed by the construction material and which run in the same direction as one another, the curve pairs comprise in each case two periodic curves (20, 30) running oppositely with respect to one another, and the curve pairs comprise portions of maximum spacing to one another (40, 41, 60, 61) and portions of minimum spacing to one another (50, 51, 70, 71).
    Type: Grant
    Filed: November 23, 2018
    Date of Patent: December 5, 2023
    Assignee: STRATASYS, INC.
    Inventors: Dirk Achten, Thomas Buesgen, Nicolas Degiorgio, Jonas Kuenzel, Ting Liu, Maximilian Wolf
  • Patent number: 11643479
    Abstract: A method for producing an article in which a layer with a radically cross-linkable resin is selectively crosslinked at least partially. This takes place according to a selected cross section of the article to be formed by means of selective application of a radical initiator. The at least partially crosslinked material is added on layer by layer to a carrier or to previous layers bonded to the carrier. A system that is suitable for carrying out the method according to the invention has a substrate, a control unit, an application unit for applying the resin to the substrate, an application unit for applying an initiator to the resin, an energy exposure unit and a contacting unit.
    Type: Grant
    Filed: December 4, 2017
    Date of Patent: May 9, 2023
    Assignee: Covestro Deutschland AG
    Inventors: Dirk Achten, Thomas Büsgen, Michael Ludewig, Roland Wagner, Christoph Tomczyk, Jörg Tillack, Arnaud Guedou
  • Patent number: 11613072
    Abstract: The present invention relates to polymerizable compositions which contain components that can be crosslinked both via isocyanurate bonds and by a radical reaction mechanism. The invention further relates to methods by way of which polymers can be produced from said compositions.
    Type: Grant
    Filed: November 14, 2017
    Date of Patent: March 28, 2023
    Assignee: Covestro Deutschland AG
    Inventors: Paul Heinz, Richard Meisenheimer, Jörg Tillack, Dirk Achten, Thomas Büsgen, Michael Ludewig, Christoph Tomczyk, Roland Wagner, Alisa Kayser
  • Publication number: 20230060682
    Abstract: A method for producing an object from a filamentary building material in an additive fused deposition modelling process, comprising the steps of: providing the building material; transporting the building material into a printhead at a feed rate for the building material, wherein the building material is transported between a driven drive wheel and a second wheel; melting the building material by means of a heating device in the printhead; discharging the molten building material to a discharge location, corresponding to a selected cross section of the object to be produced, at a discharge rate through an orifice of the printhead, with relative movement of the printhead in relation to the discharge location at a predetermined speed to movement along a predetermined path, wherein the path has at each location a curvature that can assume a positive value, zero or a negative value; wherein a control unit controls at least the drive of the drive wheel, the heating device in the printhead and the movement of the p
    Type: Application
    Filed: September 13, 2022
    Publication date: March 2, 2023
    Inventors: Dirk Achten, Thomas Buesgen, Levent Akbas, Roland Wagner, Nicolas Degiorgio, Jonas Kuenzel
  • Patent number: 11590692
    Abstract: A process for producing an object from a precursor comprises the steps of: I) depositing a free-radically crosslinked resin atop a carrier to obtain a ply of a construction material joined to the carrier which corresponds to a first selected cross section of the precursor; II) depositing a free-radically crosslinked resin atop a previously applied ply of the construction material to obtain a further ply of the construction material which corresponds to a further selected cross section of the precursor and which is joined to the previously applied ply; III) repeating step II) until the precursor is formed; IV) treating the precursor obtained after step III) under conditions sufficient to at least partially trimerize to isocyanurate groups NCO groups present in the free-radically crosslinked resin of the obtained precursor to obtain the object.
    Type: Grant
    Filed: November 14, 2017
    Date of Patent: February 28, 2023
    Assignee: Covestro Deutschland AG
    Inventors: Dirk Achten, Thomas Büsgen, Jörg Tillack, Michael Ludewig, Christoph Tomczyk, Roland Wagner
  • Patent number: 11555088
    Abstract: The invention relates to a method for producing an object from a construction material, the construction material comprising radically crosslinkable groups, NCO groups and groups having Zerewitinoff active H atoms, and the object being a three-dimensional object and/or a layer. During and/or after the production of the object, the construction material is heated to a temperature of >50° C., and the construction material comprises one or more cyclic tin compounds of formula F-I, F-II and/or F-III.
    Type: Grant
    Filed: March 26, 2018
    Date of Patent: January 17, 2023
    Assignee: Covestro Deutschland AG
    Inventors: Dirk Achten, Thomas Büsgen, Christoph Tomczyk, Jan Weikard, Frank Richter, Roland Wagner
  • Publication number: 20220411569
    Abstract: A method for producing an object comprises the step of producing the object by means of an additive manufacturing process from a construction material. The construction material comprises a first polyurethane polymer which has: a weight percentage ratio of O to N of ?2 to ?2.5, determined by elementary analysis; a weight percentage ratio of N to C of ?0.1 to ?0.25, determined by elementary analysis; a full-width at half maximum of the melting peak of ?20 K, determined by dynamic differential scanning calorimetry DSC (2nd heating at heating rate 20 k/min); and a difference between the melting temperature and the recrystallisation temperature of ?5 K and ?100 K, determined by dynamic differential scanning calorimetry DSC (2nd heating) at a heating and cooling rate of 20 K/min.
    Type: Application
    Filed: December 14, 2020
    Publication date: December 29, 2022
    Inventors: Dirk ACHTEN, Thomas BUESGEN, Mathias MATNER, Bettina METTMANN, Bernd GARSKA, Michael KESSLER, Peter REICHERT, Roland WAGNER, Thomas PRENVEILLE
  • Patent number: 11504906
    Abstract: The invention relates to a method for producing a three-dimensional object by means of a powder-based additive production method from at least one first powdery material, wherein the at least one first powdery material comprises at least one first compound having a first reactive group a). The first reactive group a) is selected from the group consisting of an isocyanate group, a blocked isocyanate group, or a mixture thereof. The invention further relates to a component produced using the method according to the invention, and to powdery material that is suited for the method according to the invention.
    Type: Grant
    Filed: May 9, 2018
    Date of Patent: November 22, 2022
    Assignee: Covestro Deutschland AG
    Inventors: Dirk Achten, Thomas Buesgen, Thomas Faecke, Bettina Mettmann, Joerg Buechner, Hans-Josef Laas, Ting Liu
  • Publication number: 20220362991
    Abstract: The invention relates to a method for modifying an object comprising the step of: I) providing an object which is made at least partially of a construction material comprising a thermoplastic polyurethane. The method also comprises the following steps: II) contacting, at least in part, the construction material, for a first predetermined period of time, with a first liquid comprising ?80% by weight, based on the total weight of the first liquid, of a polar aprotic solvent; III) contacting, for a second predetermined period of time, the areas of the construction material that were in contact with the liquid in step II) with a second liquid comprising ?80% by weight, based on the total weight of the second liquid, of a polar protic solvent. Preferably, the first liquid is DMSO or acetone and the second liquid is water.
    Type: Application
    Filed: September 25, 2020
    Publication date: November 17, 2022
    Inventors: Bettina Mettmann, Thomas Buesgen, Michael Kessler