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).

  • Patent number: 10576392
    Abstract: 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: Grant
    Filed: September 23, 2016
    Date of Patent: March 3, 2020
    Assignee: Covestro Deutschland AG
    Inventors: Friedhelm Steffens, Wilfried Hedderich, Jürgen Bausa, Franz Beggel, Volker Michele
  • Publication number: 20180318728
    Abstract: 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: Application
    Filed: September 23, 2016
    Publication date: November 8, 2018
    Inventors: Friedhelm Steffens, Wilfried Hedderich, Jürgen Bausa, Franz Beggel, Volker Michele
  • Patent number: 10052850
    Abstract: 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: Grant
    Filed: September 1, 2015
    Date of Patent: August 21, 2018
    Assignee: EXATEC, LLC
    Inventors: Keith D. Weiss, Steven M. Gasworth, Sunitha K. Grandhee, Wilfried Hedderich
  • Patent number: 9871199
    Abstract: 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: Grant
    Filed: March 10, 2016
    Date of Patent: January 16, 2018
    Assignee: SABIC GLOBAL TECHNOLOGIES B.V.
    Inventors: Robert Schwenke, Wilfried Hedderich, Chengtao Li, Christophe Lefaux, Ken Foster
  • Publication number: 20160185287
    Abstract: 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: Application
    Filed: March 10, 2016
    Publication date: June 30, 2016
    Inventors: Robert Schwenke, Wilfried Hedderich, Chengtao Li, Christophe Lefaux, Ken Foster
  • Patent number: 9315148
    Abstract: 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: Grant
    Filed: September 10, 2014
    Date of Patent: April 19, 2016
    Assignee: EXATEC LLC
    Inventors: Robert Schwenke, Wilfried Hedderich, Chengtao Li, Christophe Lefaux, Ken Foster
  • Patent number: 9252771
    Abstract: 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: Grant
    Filed: September 12, 2011
    Date of Patent: February 2, 2016
    Assignee: T+ink, Inc.
    Inventors: Rainer Kunz, Thomas Bernert, Wilfried Hedderich
  • Publication number: 20150367612
    Abstract: 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: Application
    Filed: September 1, 2015
    Publication date: December 24, 2015
    Inventors: Keith D. Weiss, Steven M. Gasworth, Sunitha K. Grandhee, Wilfried Hedderich
  • Patent number: 9139242
    Abstract: 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: Grant
    Filed: August 25, 2014
    Date of Patent: September 22, 2015
    Assignee: EXATEC LLC
    Inventors: Keith D. Weiss, Steven M. Gasworth, Sunitha K. Grandhee, Wilfried Hedderich
  • Publication number: 20140376243
    Abstract: 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: Application
    Filed: September 10, 2014
    Publication date: December 25, 2014
    Inventors: Robert Schwenke, Wilfried Hedderich, Chengtao Li, Christophe Lefaux, Ken Foster
  • Publication number: 20140367028
    Abstract: 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: Application
    Filed: August 25, 2014
    Publication date: December 18, 2014
    Inventors: Keith D. Weiss, Steven M. Gasworth, Sunitha K. Grandhee, Wilfried Hedderich
  • Publication number: 20130241688
    Abstract: 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: Application
    Filed: September 12, 2011
    Publication date: September 19, 2013
    Applicant: INK-LOGIX, LLC
    Inventors: Rainer Kunz, Thomas Bernert, Wilfried Hedderich
  • Publication number: 20130140541
    Abstract: 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: Application
    Filed: June 7, 2011
    Publication date: June 6, 2013
    Applicant: Bayer Intellectual Property GmbH
    Inventors: Rainer Kunz, Wilfried Hedderich, Carsten Benecke
  • Publication number: 20120235879
    Abstract: 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: Application
    Filed: April 14, 2010
    Publication date: September 20, 2012
    Applicant: Molex Incorporated
    Inventors: Andreas Eder, Wilfried Hedderich, Thomas Wagner, Mads Sager
  • Publication number: 20110217530
    Abstract: 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: Application
    Filed: August 22, 2009
    Publication date: September 8, 2011
    Inventors: Andrea Maier-Richter, Eckard Foltin, Thomas Bernert, Wilfried Hedderich, Thomas Wagner
  • Patent number: 7573630
    Abstract: 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: Grant
    Filed: June 2, 2006
    Date of Patent: August 11, 2009
    Assignee: Exatec, LLC
    Inventors: Wilfried Hedderich, Christophe Lefaux, Keith D. Weiss
  • Publication number: 20080272613
    Abstract: 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: Application
    Filed: May 1, 2008
    Publication date: November 6, 2008
    Inventors: Keith D. Weiss, Steven M. Gasworth, Sunitha K. Grandhee, Wilfried Hedderich
  • Publication number: 20080028697
    Abstract: 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: Application
    Filed: August 4, 2006
    Publication date: February 7, 2008
    Inventors: Chengtao Li, Wilfried Hedderich, Keith D. Weiss, Rebecca Northey
  • Publication number: 20070286995
    Abstract: 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: Application
    Filed: June 9, 2006
    Publication date: December 13, 2007
    Inventors: Chengtao Li, Wilfried Hedderich
  • Publication number: 20070287028
    Abstract: 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: Application
    Filed: June 9, 2006
    Publication date: December 13, 2007
    Inventors: Wilfried Hedderich, Christophe Lefaux