Patents by Inventor Stefan Bernhardt
Stefan Bernhardt 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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Patent number: 10793731Abstract: The present invention relates to the technical field of 3D printing, in particular in the form of the binder jetting process in which particles in a powder bed are adhesive-bonded by means of a printed adhesive to give a three-dimensional object. The particles here can be inorganic materials, e.g. sand or a metal powder, or polymeric particles, such as polymethacrylates or polyamides. To this end, polymethacrylates can by way of example take the form of suspension polymers known as bead polymers. In this context the present invention in particular relates to, as powders for 3D printing, suspension polymers which differ from the prior art in that they comprise a hard phase and an uncrosslinked soft phase.Type: GrantFiled: April 12, 2017Date of Patent: October 6, 2020Assignee: Evonik Operations GmbHInventors: Stefan Bernhardt, Thomas Hasskerl, Dirk Poppe, Stephan Wieber
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Patent number: 10695978Abstract: The present invention relates to the technical field of 3D printing, especially in the form of the binder jetting method, in which particles in a powder bed are bonded by means of a printed adhesive to form a three-dimensional object. The particles may be inorganic particles, for example sand or a metal powder, or polymeric particulate, for example polymethacrylates or polyamides. For this purpose, polymethacrylates may take the form, for example, of suspension polymers, called bead polymers.Type: GrantFiled: April 4, 2017Date of Patent: June 30, 2020Assignee: Evonik Operations GmbHInventors: Dirk Poppe, Andrea Fruth, Stefan Bernhardt, Stephan Wieber
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Patent number: 10688718Abstract: The present invention relates to the technical field of 3D printing, especially in the form of the binder jetting method, in which particulate material in a powder bed is bonded by means of a printed adhesive to form a three-dimensional object. The particulate materials may be inorganic materials, for example sand or a metal powder, or particulate polymeric materials, for example polymethacrylates or polyamides. For this purpose, polymethacrylates may take the form, for example, of suspension polymers, called bead polymers. The present invention relates to the use of porous particles in the binder jetting process, in particular of porous suspension polymers. These powders for 3-D printing differ from the prior art in that the porosity results in a faster and better absorption of the printed binder by the powder particles. A great advantage of this procedure is additionally that a product with less warpage is formed and that the end product has a better surface appearance.Type: GrantFiled: September 11, 2017Date of Patent: June 23, 2020Assignee: Evonik Operations GmbHInventors: Stephan Wieber, Dirk Poppe, Stefan Bernhardt, Markus Pridöhl, Sven Balk, Christian Meier, Senada Schaack, Thomas Hasskerl
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Publication number: 20190337282Abstract: The present invention relates to a novel process for the production of coated filaments for subsequent application as print in extrusion-based 3D printers, e.g. FDM printers (fused deposition modelling printers). The filaments are coated in a separate process outside of the printer, and can also be used in a conventional extrusion printer. The present invention further relates to the coating device for application of the coating to the filament and to a roll containing the coated filaments.Type: ApplicationFiled: July 15, 2019Publication date: November 7, 2019Applicant: Evonik Röhm GmbHInventors: Markus PRIDOEHL, Ulrike BEHRENS, Stefan BERNHARDT, Ann-Kristin KLAAR, Samuel von KARSA-WILBERFORCE
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Publication number: 20190299520Abstract: The present invention relates to the technical field of 3D printing, especially in the form of the binder jetting method, in which particulate material in a powder bed is bonded by means of a printed adhesive to form a three-dimensional object. The particulate materials may be inorganic materials, for example sand or a metal powder, or particulate polymeric materials, for example polymethacrylates or polyamides. For this purpose, polymethacrylates may take the form, for example, of suspension polymers, called bead polymers. The present invention relates to the use of porous particles in the binder jetting process, in particular of porous suspension polymers. These powders for 3-D printing differ from the prior art in that the porosity results in a faster and better absorption of the printed binder by the powder particles. A great advantage of this procedure is additionally that a product with less warpage is formed and that the end product has a better surface appearance.Type: ApplicationFiled: September 11, 2017Publication date: October 3, 2019Applicant: Evonik Röhm GmbHInventors: Stephan Wieber, Dirk POPPE, Stefan BERNHARDT, Markus PRIDOHL, Sven BALK, Chrisian MEIER, Senada SCHAACK, Thomas HASSKERL
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Publication number: 20190126542Abstract: The present invention relates to the technical field of 3D printing, especially in the form of the binder jetting method, in which particles in a powder bed are bonded by means of a printed adhesive to form a three-dimensional object. The particles may be inorganic particles, for example sand or a metal powder, or polymeric particulate, for example polymethacrylates or polyamides. For this purpose, polymethacrylates may take the form, for example, of suspension polymers, called bead polymers.Type: ApplicationFiled: April 4, 2017Publication date: May 2, 2019Applicant: Evonik Röhm GmbHInventors: Dirk POPPE, Andrea FRUTH, Stefan BERNHARDT, Stephan WIEBER
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Publication number: 20190127598Abstract: The present invention relates to the technical field of 3D printing, in particular in the form of the binder jetting process in which particles in a powder bed are adhesive-bonded by means of a printed adhesive to give a three-dimensional object. The particles here can be inorganic materials, e.g. sand or a metal powder, or polymeric particles, such as polymethacrylates or polyamides. To this end, polymethacrylates can by way of example take the form of suspension polymers known as bead polymers. In this context the present invention in particular relates to, as powders for 3D printing, suspension polymers which differ from the prior art in that they comprise a hard phase and an uncrosslinked soft phase.Type: ApplicationFiled: April 12, 2017Publication date: May 2, 2019Applicant: Evonik Röhm GmbHInventors: Stefan Bernhardt, Thomas HASSKERL, Dirk POPPE, Stephan WIEBER
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Publication number: 20160017165Abstract: The present invention relates to a technology for the treatment of materials for exposed outdoor use with a high-grade, abrasion-resistant surface coating based on a formulation comprising crosslinkable fluoropolymers. The invention further relates to particular embodiments for the surface coating.Type: ApplicationFiled: February 14, 2014Publication date: January 21, 2016Applicant: Evonik Roehm GmbHInventors: Uwe NUMRICH, Andre HENNIG, Stefan BERNHARDT, Markus HALLACK, Ruediger JELITTE
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Patent number: 9193110Abstract: The present invention relates to a novel process for the production of coated filaments for subsequent application as print in extrusion-based 3D printers, e.g. FDM printers (fused deposition modelling printers). The filaments are coated in a separate process outside of the printer, and can also be used in a conventional extrusion printer. The present invention further relates to the coating device for application of the coating to the filament and to a roll containing the coated filaments.Type: GrantFiled: November 6, 2013Date of Patent: November 24, 2015Assignee: Evonik Industries AGInventors: Markus Pridoehl, Ulrike Behrens, Stefan Bernhardt, Ann-Kristin Klaar, Samuel von Karsa-Wilberforce
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Publication number: 20150321424Abstract: A coating device for the production of coated filaments for an extrusion-based 3D printing process is provided. The device contains a coating unit and a fixing unit downstream of the coating unit.Type: ApplicationFiled: July 20, 2015Publication date: November 12, 2015Applicant: Evonik Industries AGInventors: Markus PRIDOEHL, Ulrike BEHRENS, Stefan BERNHARDT, Ann-Kristin KLAAR, Samuel von KARSA-WILBERFORCE
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Patent number: 9102640Abstract: Apparatus and processes are provided for forming epoxide compounds. In one embodiment, a process for the manufacture of an epoxide is provided including adding an oxidant, a water-soluble manganese complex and a terminal olefin to form a multiphasic reaction mixture, reacting the terminal olefin with the oxidant in the multiphasic reaction mixture having at least one organic phase in the presence of the water-soluble manganese complex, separating the reaction mixture into the at least one organic phase and an aqueous phase, and reusing at least part of the aqueous phase. The invention is also related to a device for performing the above process.Type: GrantFiled: February 19, 2014Date of Patent: August 11, 2015Assignee: Evonik Degussa GmbHInventors: Prasad Muppa, Ron Postma, Bart Van Den Berg, Jürgen Stock, Holger Wiederhold, Hans Rausch, Jörg Schallenberg, Stefan Bernhardt
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Publication number: 20140350080Abstract: This invention relates to modified short interfering RNA (siRNA) nucleic acid molecules, particularly siRNA's which have been modified by the addition of a 2-0-guanidinopropyl (GP) modified nucleoside. In particular the invention relates to modified siRNAs which are capable of silencing target sequences, methods of treating and preventing infection by using the siRNAs, medicaments containing the siRNAs and use of the siRNAs.Type: ApplicationFiled: October 26, 2012Publication date: November 27, 2014Applicant: UNIVERSITY OF THE WITWATERSRAND, JOHANNESBURGInventors: Patrick Arbuthnot, Justin Hean, Abdullah Ely, Musa Marimani, Jolanta Brzezinska, Jennifer D'Onofrio, Maximilian C.R. Buff, Joachim W. Engels, Stefan Bernhardt
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Patent number: 8859790Abstract: Apparatus and processes are provided for forming epoxide compounds. In one embodiment, a process for the manufacture of an epoxide is provided including adding an oxidant, a water-soluble manganese complex and a terminal olefin to form a multiphasic reaction mixture, reacting the terminal olefin with the oxidant in the multiphasic reaction mixture having at least one organic phase in the presence of the water-soluble manganese complex, separating the reaction mixture into the at least one organic phase and an aqueous phase, and reusing at least part of the aqueous phase. The invention is also related to a device for performing the above process.Type: GrantFiled: January 26, 2011Date of Patent: October 14, 2014Assignee: Momentive Specialty Chemicals Inc.Inventors: Prasad Muppa, Ron Postma, Bart Van Den Berg, Juergen Stock, Holger Wiederhold, Hans Rausch, Jorg Schallenberg, Stefan Bernhardt
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Patent number: 8826828Abstract: A floor pan for high-speed trains is disposed below a car floor and implemented as a stand encased by a protective floor and has lateral carrier walls with side plates fastened thereon. The floor pan provides protection against damage by ballast stones to the under-floor space in which the equipment is stored.Type: GrantFiled: October 5, 2010Date of Patent: September 9, 2014Assignee: Siemens AktiengesellschaftInventors: Thomas Baumann, Stefan Bernhardt, Rüdiger Mangler
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Maleic anhydride copolymers as soluble support material for fused deposition modelling (FDM) printer
Patent number: 8822590Abstract: The invention relates to a novel support material for the fused deposition modelling process for producing three-dimensional objects. The invention relates more particularly to a 3D printing process involving support materials which are easier to remove than in the prior art. The support materials according to the invention are styrene-maleic anhydride copolymers for example.Type: GrantFiled: March 13, 2012Date of Patent: September 2, 2014Assignee: Evonik Röhm GmbHInventors: Florian Hermes, Stefan Bernhardt, Dirk Poppe, Guenter Schmitt, Markus Pridoehl, Gerd Loehden -
Publication number: 20140171666Abstract: Apparatus and processes are provided for forming epoxide compounds. In one embodiment, a process for the manufacture of an epoxide is provided including adding an oxidant, a water-soluble manganese complex and a terminal olefin to form a multiphasic reaction mixture, reacting the terminal olefin with the oxidant in the multiphasic reaction mixture having at least one organic phase in the presence of the water-soluble manganese complex, separating the reaction mixture into the at least one organic phase and an aqueous phase, and reusing at least part of the aqueous phase. The invention is also related to a device for performing the above process.Type: ApplicationFiled: February 19, 2014Publication date: June 19, 2014Applicant: Momentive Specialty Chemicals Inc.Inventors: Prasad MUPPA, Ron Postma, Bart Van Den Berg, Juergen Stock, Holger Wiederhold, Hans Rausch, Jörg Schallenberg, Stefan Bernhardt
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Publication number: 20140134335Abstract: The present invention relates to a novel process for the production of coated filaments for subsequent application as print in extrusion-based 3D printers, e.g. FDM printers (fused deposition modelling printers). The filaments are coated in a separate process outside of the printer, and can also be used in a conventional extrusion printer. The present invention further relates to the coating device for application of the coating to the filament and to a roll containing the coated filaments.Type: ApplicationFiled: November 6, 2013Publication date: May 15, 2014Applicant: Evonik Industries AGInventors: Markus PRIDOEHL, Ulrike Behrens, Stefan Bernhardt, Ann-Kristin Klaar, Samuel von Karsa-Wilberforce
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MALEIC ANHYDRIDE COPOLYMERS AS SOLUBLE SUPPORT MATERIAL FOR FUSED DEPOSITION MODELLING (FDM) PRINTER
Publication number: 20130317164Abstract: The invention relates to a novel support material for the fused deposition modelling process for producing three-dimensional objects. The invention relates more particularly to a 3D printing process involving support materials which are easier to remove than in the prior art. The support materials according to the invention are styrene-maleic anhydride copolymers for example.Type: ApplicationFiled: March 13, 2012Publication date: November 28, 2013Applicant: Evonik Roehm GmbHInventors: Florian Hermes, Stefan Bernhardt, Dirk Poppe, Guenter Schmitt, Markus Pridoehl, Gerd Loehden -
Publication number: 20130023680Abstract: Apparatus and processes are provided for forming epoxide compounds. In one embodiment, a process for the manufacture of an epoxide is provided including adding an oxidant, a water-soluble manganese complex and a terminal olefin to form a multiphasic reaction mixture, reacting the terminal olefin with the oxidant in the multiphasic reaction mixture having at least one organic phase in the presence of the water-soluble manganese complex, separating the reaction mixture into the at least one organic phase and an aqueous phase, and reusing at least part of the aqueous phase. The invention is also related to a device for performing the above process.Type: ApplicationFiled: January 26, 2011Publication date: January 24, 2013Inventors: Prasad Muppa, Ron Postma, Bart Van Den Berg, Juergen Stock, Holger Wiederhold, Hans Rausch, Jorg Schallenberg, Stefan Bernhardt
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Publication number: 20120240816Abstract: A floor pan for high-speed trains is disposed below a car floor and implemented as a stand encased by a protective floor and has lateral carrier walls with side plates fastened thereon. The floor pan provides protection against damage by ballast stones to the under-floor space in which the equipment is stored.Type: ApplicationFiled: October 5, 2010Publication date: September 27, 2012Applicants: OFFENE AKTIENGESELLSCHAFT RUSSISCHE EISENBAHNEN, SIEMENS AKTIENGESELLSCHAFTInventors: Thomas Baumann, Stefan Bernhardt, Rüdiger Mangler