Patents by Inventor Wilfried Hedderich
Wilfried Hedderich 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: 10576392Abstract: A distillation column for separating a multicomponent mixture into at least three fractions. The distillation column has at least one separating wall and at least one material exchange element (1) above the at least one separating wall. A device (10) for mixing the steam flows flowing upwards to the left and the right of the at least one separating wall is arranged between the at least one separating wall and the at least one material exchange element (1). The use of the distillation column for purifying isocyanates, in particular for toluene diisocyanate (TDI), is also described.Type: GrantFiled: September 23, 2016Date of Patent: March 3, 2020Assignee: Covestro Deutschland AGInventors: Friedhelm Steffens, Wilfried Hedderich, Jürgen Bausa, Franz Beggel, Volker Michele
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Publication number: 20180318728Abstract: The invention relates to a distillation column for separating a multicomponent mixture into at least three fractions. The distillation column has at least one separating wall and at least one material exchange element (1) above the at least one separating wall. A device (10) for mixing the steam flows flowing upwards to the left and the right of the at least one separating wall is arranged between the at least one separating wall and the at least one material exchange element (1). The invention likewise relates to the use of the distillation column according to the invention for purifying isocyanates, in particular for toluene diisocyanate (TDI).Type: ApplicationFiled: September 23, 2016Publication date: November 8, 2018Inventors: Friedhelm Steffens, Wilfried Hedderich, Jürgen Bausa, Franz Beggel, Volker Michele
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Patent number: 10052850Abstract: An economical method of manufacturing a plastic glazing panel having an encapsulation for aesthetic purposes and to enhance the sealing of the glazing panel to the vehicle is presented. This method includes the steps of forming a plastic panel having an A-side and B-side; printing an opaque border from an ink with the border being in contact with the B-side of the panel and substantially encircling the perimeter of the panel; curing the ink of the opaque border; applying a weatherable layer on the printed border and the plastic panel; curing the weatherable layer; depositing an abrasion resistant layer on the weatherable layer; placing the plastic panel into a mold having a soft gasket; injecting an elastomeric material to form an encapsulation that substantially encircles the perimeter of the plastic panel and encompasses the A-side; B-side and edge of the plastic panel; and removing the plastic panel from the mold.Type: GrantFiled: September 1, 2015Date of Patent: August 21, 2018Assignee: EXATEC, LLCInventors: Keith D. Weiss, Steven M. Gasworth, Sunitha K. Grandhee, Wilfried Hedderich
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Patent number: 9871199Abstract: In an embodiment, a light emissive window assembly for providing illumination to an occupant compartment of an automobile comprises a window panel comprising a transparent viewing area and an emissive area, wherein the emissive area is configured to emit light into the occupant compartment and the transparent viewing area is not configured to emit light; wherein the emissive area comprises an abrasion resistant layer, an ultraviolet protective layer, a base layer, and an emissive layer; wherein the ultraviolet protective layer is located in between the abrasion resistant layer and the base layer; and wherein the base layer is located in between the ultraviolet protective layer and the emissive layer.Type: GrantFiled: March 10, 2016Date of Patent: January 16, 2018Assignee: SABIC GLOBAL TECHNOLOGIES B.V.Inventors: Robert Schwenke, Wilfried Hedderich, Chengtao Li, Christophe Lefaux, Ken Foster
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Publication number: 20160185287Abstract: In an embodiment, a light emissive window assembly for providing illumination to an occupant compartment of an automobile comprises a window panel comprising a transparent viewing area and an emissive area, wherein the emissive area is configured to emit light into the occupant compartment and the transparent viewing area is not configured to emit light; wherein the emissive area comprises an abrasion resistant layer, an ultraviolet protective layer, a base layer, and an emissive layer; wherein the ultraviolet protective layer is located in between the abrasion resistant layer and the base layer; and wherein the base layer is located in between the ultraviolet protective layer and the emissive layer.Type: ApplicationFiled: March 10, 2016Publication date: June 30, 2016Inventors: Robert Schwenke, Wilfried Hedderich, Chengtao Li, Christophe Lefaux, Ken Foster
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Patent number: 9315148Abstract: A window assembly having a first transparent area and a light emissive area. The panel includes a first transparent layer with an ultraviolet blocking layer and an abrasion layer. The light emissive area includes a light emissive layer that may be an organic light emitting display, an electroluminescent display, a polymer light emitting display or a light pipe configured to receive light from a light source.Type: GrantFiled: September 10, 2014Date of Patent: April 19, 2016Assignee: EXATEC LLCInventors: Robert Schwenke, Wilfried Hedderich, Chengtao Li, Christophe Lefaux, Ken Foster
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Patent number: 9252771Abstract: The invention relates to a layer structure comprising at least one switch (4) illuminated by an ACPEL arrangement (2), to the method for producing and shaping said layer structure, and the use thereof for forming display and control elements and for forming housing elements for mobile or stationary electronic equipment or small or large household appliances or for forming keyboard systems without movable components.Type: GrantFiled: September 12, 2011Date of Patent: February 2, 2016Assignee: T+ink, Inc.Inventors: Rainer Kunz, Thomas Bernert, Wilfried Hedderich
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Publication number: 20150367612Abstract: An economical method of manufacturing a plastic glazing panel having an encapsulation for aesthetic purposes and to enhance the sealing of the glazing panel to the vehicle is presented. This method includes the steps of forming a plastic panel having an A-side and B-side; printing an opaque border from an ink with the border being in contact with the B-side of the panel and substantially encircling the perimeter of the panel; curing the ink of the opaque border; applying a weatherable layer on the printed border and the plastic panel; curing the weatherable layer; depositing an abrasion resistant layer on the weatherable layer; placing the plastic panel into a mold having a soft gasket; injecting an elastomeric material to form an encapsulation that substantially encircles the perimeter of the plastic panel and encompasses the A-side; B-side and edge of the plastic panel; and removing the plastic panel from the mold.Type: ApplicationFiled: September 1, 2015Publication date: December 24, 2015Inventors: Keith D. Weiss, Steven M. Gasworth, Sunitha K. Grandhee, Wilfried Hedderich
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Patent number: 9139242Abstract: An economical method of manufacturing a plastic glazing panel having an encapsulation to enhance the sealing of the glazing panel to the vehicle is presented. This economical method includes the steps of forming a plastic panel having an A-side and B-side; printing an opaque border from an ink with the border being in contact with the B-side of the panel and substantially encircling the perimeter of the panel; curing the ink of the opaque border; applying a weatherable layer on the printed border and the plastic panel; curing the weatherable layer; depositing an abrasion resistant layer on the weatherable layer; placing the plastic panel into a mold having a soft gasket; injecting an elastomeric material to form an encapsulation that substantially encircles the perimeter of the plastic panel and encompasses the A-side; B-side and edge of the plastic panel; and removing the plastic panel from the mold.Type: GrantFiled: August 25, 2014Date of Patent: September 22, 2015Assignee: EXATEC LLCInventors: Keith D. Weiss, Steven M. Gasworth, Sunitha K. Grandhee, Wilfried Hedderich
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Publication number: 20140376243Abstract: A window assembly having a first transparent area and a light emissive area. The panel includes a first transparent layer with an ultraviolet blocking layer and an abrasion layer. The light emissive area includes a light emissive layer that may be an organic light emitting display, an electroluminescent display, a polymer light emitting display or a light pipe configured to receive light from a light source.Type: ApplicationFiled: September 10, 2014Publication date: December 25, 2014Inventors: Robert Schwenke, Wilfried Hedderich, Chengtao Li, Christophe Lefaux, Ken Foster
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Publication number: 20140367028Abstract: An economical method of manufacturing a plastic glazing panel having an encapsulation to enhance the sealing of the glazing panel to the vehicle is presented. This economical method includes the steps of forming a plastic panel having an A-side and B-side; printing an opaque border from an ink with the border being in contact with the B-side of the panel and substantially encircling the perimeter of the panel; curing the ink of the opaque border; applying a weatherable layer on the printed border and the plastic panel; curing the weatherable layer; depositing an abrasion resistant layer on the weatherable layer; placing the plastic panel into a mold having a soft gasket; injecting an elastomeric material to form an encapsulation that substantially encircles the perimeter of the plastic panel and encompasses the A-side; B-side and edge of the plastic panel; and removing the plastic panel from the mold.Type: ApplicationFiled: August 25, 2014Publication date: December 18, 2014Inventors: Keith D. Weiss, Steven M. Gasworth, Sunitha K. Grandhee, Wilfried Hedderich
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Publication number: 20130241688Abstract: The invention relates to a layer structure comprising at least one switch (4) illuminated by an ACPEL arrangement (2), to the method for producing and shaping said layer structure, and the use thereof for forming display and control elements and for forming housing elements for mobile or stationary electronic equipment or small or large household appliances or for forming keyboard systems without movable components.Type: ApplicationFiled: September 12, 2011Publication date: September 19, 2013Applicant: INK-LOGIX, LLCInventors: Rainer Kunz, Thomas Bernert, Wilfried Hedderich
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Publication number: 20130140541Abstract: The present invention provides a layer structure comprising a substrate (1), at least one LEC (7) (light emitting electrochemical cell) and at least one further electrotechnical structural element (4, 5, 8), a process for the production of this layer structure, and the use thereof in the production of small and large display and control elements and in the production of casing elements for mobile or stationary electronic devices or small or large household appliances or in the production of keyboard systems without moving components.Type: ApplicationFiled: June 7, 2011Publication date: June 6, 2013Applicant: Bayer Intellectual Property GmbHInventors: Rainer Kunz, Wilfried Hedderich, Carsten Benecke
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Publication number: 20120235879Abstract: An antenna shape can be inked onto a thin film and then the thin film can be shaped to form a three dimensional (3D) flex-film. The 3D flex-film can then be integrated into a carrier using conventional molding processes. The resultant housing includes a carrier that supports the 3D flex-film on an inner or outer surface of the carrier. The resultant housing thus allows for improved integration of an antenna with a housing so as to provide a more desirable housing for devices that can benefit from the corresponding antenna, such as, but not limited to, mobile devices.Type: ApplicationFiled: April 14, 2010Publication date: September 20, 2012Applicant: Molex IncorporatedInventors: Andreas Eder, Wilfried Hedderich, Thomas Wagner, Mads Sager
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Publication number: 20110217530Abstract: The invention relates to a conversion film for a light-emitting element, said film containing a conversion pigment. The invention further relates to a method for producing the conversion film, to the use thereof and to a light-emitting element equipped with said conversion film.Type: ApplicationFiled: August 22, 2009Publication date: September 8, 2011Inventors: Andrea Maier-Richter, Eckard Foltin, Thomas Bernert, Wilfried Hedderich, Thomas Wagner
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Patent number: 7573630Abstract: A window assembly having photochromatic properties is described. The window assembly includes a substrate being adjacent to a coating. A photochromatic film is located between the substrate and the coating, whereby the photochromatic film darkens when the window assembly is exposed to ultraviolet light.Type: GrantFiled: June 2, 2006Date of Patent: August 11, 2009Assignee: Exatec, LLCInventors: Wilfried Hedderich, Christophe Lefaux, Keith D. Weiss
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Publication number: 20080272613Abstract: An economical method of manufacturing a plastic glazing panel having an encapsulation for aesthetic purposes and to enhance the sealing of the glazing panel to the vehicle is presented. This economical method includes the steps of forming forming a plastic panel having an A-side and B-side; printing an opaque border from an ink with the border being in contact with the B-side of the panel and substantially encircling the perimeter of the panel; curing the ink of the opaque border; applying a weatherable layer on the printed border and the plastic panel; curing the weatherable layer; depositing an abrasion resistant layer on the weatherable layer; placing the plastic panel into a mold having a soft gasket; injecting an elastomeric material to form an encapsulation that substantially encircles the perimeter of the plastic panel and encompasses the A-side; B-side and edge of the plastic panel; and removing the plastic panel from the mold.Type: ApplicationFiled: May 1, 2008Publication date: November 6, 2008Inventors: Keith D. Weiss, Steven M. Gasworth, Sunitha K. Grandhee, Wilfried Hedderich
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Publication number: 20080028697Abstract: A window defrost assembly having a substrate, a polycarbonate film adjacent to the substrate, a heater grid located between the substrate and the polycarbonate film, and a light control layer located between the polycarbonate film and the heater grid. The heater grid includes first and second bus bars and a plurality of grid lines extending between and connecting to the first and second bus bars.Type: ApplicationFiled: August 4, 2006Publication date: February 7, 2008Inventors: Chengtao Li, Wilfried Hedderich, Keith D. Weiss, Rebecca Northey
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Publication number: 20070286995Abstract: A window system having solar control properties includes a substrate having a first side and a second side, a first plasma layer adjacent to the first side of the substrate, a first weathering layer located between the first side of the substrate and the plasma layer, and a solar control system located between the first side of the substrate and the weathering layer.Type: ApplicationFiled: June 9, 2006Publication date: December 13, 2007Inventors: Chengtao Li, Wilfried Hedderich
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Publication number: 20070287028Abstract: A self-illuminating glazing panel suitable for use in an automotive vehicle is provided for better night and dusk visibility for safety purposes and for brighter appearance during the day. The self-illuminating glazing panel integrates a luminescent layer, containing phosphorescent or fluorescent pigments or dyes, with a plastic substrate. The luminescent layer allows the panel to glow during the evening and night hours upon excitation by external light sources, such as headlamps and streetlights.Type: ApplicationFiled: June 9, 2006Publication date: December 13, 2007Inventors: Wilfried Hedderich, Christophe Lefaux