Patents by Inventor Ralf Köster
Ralf Köster 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: 11230743Abstract: The present invention relates to a method for manufacturing a tubular product, characterized in that the tubular product is manufactured from steel comprising chromium in the range of 2.5 to 9.5 wt. % and silicon in an amount of more than 1.0 wt. %, and the method comprises the steps of austenitizing, quenching and tempering at a tempering temperature in the range of 300° C. to 550° C. Furthermore, the invention concerns a tubular product produced by this method.Type: GrantFiled: February 18, 2020Date of Patent: January 25, 2022Assignee: Benteler Steel/Tube GmbHInventors: Michael Kaufmann, Marco Walterfang, Ralf Köster
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Publication number: 20210163663Abstract: The invention relates to a process for producing polyurethane/polyisocyanurate rigid foams by reacting a specific reaction mixture in the presence of a catalyst component containing potassium formate and an amine, and to the polyurethane/polyisocyanurate rigid foams produced according to said method.Type: ApplicationFiled: April 9, 2019Publication date: June 3, 2021Inventors: Nicole Welsch, Ralf Koester, Rene Abels, Inge Tinnefeld
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Publication number: 20210163662Abstract: The invention relates to a process for producing polyurethane/polyisocyanurate rigid foams by reacting a specific reaction mixture in the presence of a catalyst component containing potassium formate and to the polyurethane/polyisocyanurate rigid foams produced according to said method.Type: ApplicationFiled: April 9, 2019Publication date: June 3, 2021Inventors: Ralf Koester, Nicole Welsch, Rene Abels, Inge Tinnefeld
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Publication number: 20200263266Abstract: The present invention relates to a method for manufacturing a tubular product, characterized in that the tubular product is manufactured from steel comprising chromium in the range of 2.5 to 9.5 wt. % and silicon in an amount of more than 1.0 wt. %, and the method comprises the steps of austenitizing, quenching and tempering at a tempering temperature in the range of 300° C. to 550° C. Furthermore, the invention concerns a tubular product produced by this method.Type: ApplicationFiled: February 18, 2020Publication date: August 20, 2020Inventors: Michael Kaufmann, Marco Walterfang, Ralf Köster
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Patent number: 10663091Abstract: A pipe system for oil country tubular goods (OCTG) and a method of manufacturing the OCTG pipe system is disclosed. The pipe system includes at least one OCTG pipe having a pipe body, the pipe body having at least one connection end formed in unipartite and materially integral manner with the pipe body for coupling to a second OCTG pipe. The OCTG pipe is formed in seamless fashion from a hardenable steel alloy, and the connection end has a yield strength higher than the yield strength of the pipe body.Type: GrantFiled: March 21, 2017Date of Patent: May 26, 2020Assignee: BENTELER STEEL/TUBE GMBHInventors: Ralf Koester, Andre Loemker
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Publication number: 20200086337Abstract: The present disclosure relates to a process and an apparatus for applying a foamable reaction mixture to a moving outerlayer, the reaction mixture being applied from discharge openings on the outerlayer, and the outerlayer moves at a speed of ?15 meters per minute relative to the discharge openings. The 510 device also comprises ?7 discharge openings.Type: ApplicationFiled: January 30, 2018Publication date: March 19, 2020Inventors: Ralf Koester, Heinrich-Peter Sobik, Uwe Kuenzel, Thomas Rüb, Catherine Lövenich
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Publication number: 20190358869Abstract: The present disclosure relates to a method and a system for applying a foamable reaction mixture to a moving outerlayer, the reaction mixture being applied from discharge openings on the outerlayer, and the outerlayer moves at a speed of ?15 meters per minute relative to the discharge openings. The system also comprises ?7 discharge openings.Type: ApplicationFiled: January 30, 2018Publication date: November 28, 2019Inventors: Ralf Koester, Heinrich-Peter Sobik, Uwe Kuenzel, Thomas Rüb, Catherine Lövenich
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Publication number: 20190344484Abstract: The invention relates to a method and a device for applying a foamable reaction mixture to a moving cover layer (10), the reaction mixture being applied to discharge openings (400) on the cover layer (10) and the cover layer moving at a speed of ?15 meters per minute relative to the discharge openings. The device also comprises ?7 discharge openings (400).Type: ApplicationFiled: January 30, 2018Publication date: November 14, 2019Inventors: Uwe Kuenzel, Ralf Koester, Heinrich-Peter Sobik, Thomas Rüb, Catherine Lövenich
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Patent number: 9925701Abstract: A device for the application of foaming reaction mixtures to a substrate which makes it possible to apply that foaming reaction mixture uniformly, a process for the production of foaming reaction mixtures using this device, apparatus for producing composites which include the device of the present invention and composites produced using such apparatus are disclosed. Use of the device of the present invention to produce foams makes it possible to produce foams having improved surface quality at higher production rates than were previously possible. The device of the present invention is particularly useful for the production of sandwich composite elements.Type: GrantFiled: December 10, 2015Date of Patent: March 27, 2018Assignee: Covestro Deutschland AGInventors: Ralf Koester, Sr., Horst-Uwe Jung
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Publication number: 20170276265Abstract: A pipe system for oil country tubular goods (OCTG) and a method of manufacturing the OCTG pipe system is disclosed. The pipe system includes at least one OCTG pipe having a pipe body, the pipe body having at least one connection end formed in unipartite and materially integral manner with the pipe body for coupling to a second OCTG pipe. The OCTG pipe is formed in seamless fashion from a hardenable steel alloy, and the connection end has a yield strength higher than the yield strength of the pipe body.Type: ApplicationFiled: March 21, 2017Publication date: September 28, 2017Inventors: Ralf KOESTER, Andre LOEMKER
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Patent number: 9724723Abstract: The invention relates to a device (100) for applying a foaming reaction mixture (600) onto a top layer (500), in particular for producing a composite element, comprising at least one casting rake (200, 260) with a tubular hollow body (210), said hollow body (210) extending along a central axis (250) and having at least two outlet openings (220) for discharging the foaming reaction mixture (600). The casting rake (200, 260) and the top layer (500) can be moved relative to each other along a longitudinal axis (510). According to the invention, the central axis (250) of the at least one casting rake (200, 260) and the longitudinal axis (510) of the movement form an angle (400, 410) of <=80 DEG relative to each other.Type: GrantFiled: January 15, 2013Date of Patent: August 8, 2017Assignee: Covestro Deutschland AGInventors: Ralf Köster, Horst-Uwe Jung, Catherine Lövenich
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Patent number: 9718223Abstract: The invention relates to a device (100) for applying a foaming reaction mixture (600) onto a top layer (500), in particular for producing a composite element, comprising at least two casting rakes (200, 260), each of which comprises a tubular hollow body (210), said hollow body (210) extending along a central axis (250) and having at least two outlet openings (220) for discharging the foaming reaction mixture (600). The casting rakes (200, 260) and the top layer (500) can be moved relative to one another in a longitudinal axis (510), and the casting rakes (200, 260) are arranged on a receiving element (700). According to the invention, each arrangement of the casting rakes (200, 260) on the receiving element (700) has a joint (805), by means of which the casting rakes (200, 260) are movably arranged on the receiving element (700) and can be oriented at an angle (400, 410) of <=80 DEG relative to the longitudinal axis (510) of the movement.Type: GrantFiled: January 15, 2013Date of Patent: August 1, 2017Assignee: Covestro Deutschland AGInventor: Ralf Köster
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Publication number: 20160144540Abstract: A device for the application of foaming reaction mixtures to a substrate which makes it possible to apply that foaming reaction mixture uniformly, a process for the production of foaming reaction mixtures using this device, apparatus for producing composites which include the device of the present invention and composites produced using such apparatus are disclosed. Use of the device of the present invention to produce foams makes it possible to produce foams having improved surface quality at higher production rates than were previously possible. The device of the present invention is particularly useful for the production of sandwich composite elements.Type: ApplicationFiled: December 10, 2015Publication date: May 26, 2016Inventors: Ralf Koester, SR., Horst-Uwe Jung
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Patent number: 9242399Abstract: A device for the application of foaming reaction mixtures to a substrate which makes it possible to apply that foaming reaction mixture uniformly, a process for the production of foaming reaction mixtures using this device, apparatus for producing composites which include the device of the present invention and composites produced using such apparatus are disclosed. Use of the device of the present invention to produce foams makes it possible to produce foams having improved surface quality at higher production rates than were previously possible. The device of the present invention is particularly useful for the production of sandwich composite elements.Type: GrantFiled: March 16, 2010Date of Patent: January 26, 2016Assignee: Bayer MaterialScience AGInventors: Ralf Koester, Horst-Uwe Jung
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Publication number: 20140342090Abstract: The invention relates to a device (100) for applying a foaming reaction mixture (600) onto a top layer (500), in particular for producing a composite element, comprising at least two casting rakes (200, 260), each of which comprises a tubular hollow body (210), said hollow body (210) extending along a central axis (250) and having at least two outlet openings (220) for discharging the foaming reaction mixture (600). The casting rakes (200, 260) and the top layer (500) can be moved relative to one another in a longitudinal axis (510), and the casting rakes (200, 260) are arranged on a receiving element (700). According to the invention, each arrangement of the casting rakes (200, 260) on the receiving element (700) has a joint (805), by means of which the casting rakes (200, 260) are movably arranged on the receiving element (700) and can be oriented at an angle (400, 410) of <=80 DEG relative to the longitudinal axis (510) of the movement.Type: ApplicationFiled: January 15, 2013Publication date: November 20, 2014Inventor: Ralf Köster
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Publication number: 20140342089Abstract: The invention relates to a device (100) for applying a foaming reaction mixture (600) onto a top layer (500), in particular for producing a composite element, comprising at least one casting rake (200, 260) with a tubular hollow body (210), said hollow body (210) extending along a central axis (250) and having at least two outlet openings (220) for discharging the foaming reaction mixture (600). The casting rake (200, 260) and the top layer (500) can be moved relative to each other along a longitudinal axis (510). According to the invention, the central axis (250) of the at least one casting rake (200, 260) and the longitudinal axis (510) of the movement form an angle (400, 410) of <=80 DEG relative to each other.Type: ApplicationFiled: January 15, 2013Publication date: November 20, 2014Inventors: Ralf Köster, Horst-Uwe Jung, Catherine Lövenich
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Publication number: 20120141673Abstract: A device for the application of foaming reaction mixtures to a substrate which makes it possible to apply that foaming reaction mixture uniformly, a process for the production of foaming reaction mixtures using this device, apparatus for producing composites which include the device of the present invention and composites produced using such apparatus are disclosed. Use of the device of the present invention to produce foams makes it possible to produce foams having improved surface quality at higher production rates than were previously possible. The device of the present invention is particularly useful for the production of sandwich composite elements.Type: ApplicationFiled: March 16, 2010Publication date: June 7, 2012Applicant: Bayer MaterialScience AGInventors: Ralf Koester, Horst-Uwe Jung