Patents by Inventor Manfred Wittner

Manfred Wittner 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).

  • Publication number: 20200332032
    Abstract: The disclosure relates to a method for modifying the rheology of a polymer and a polymeric composition obtained by the method. The composition comprises at least one organic peroxide and water in emulsion form. The polymer may comprise a polyolefin. The method comprises extruding a molten polymer and the composition and removing volatile compounds from the molten polymer.
    Type: Application
    Filed: July 6, 2020
    Publication date: October 22, 2020
    Applicant: Lummus Novolen Technology GmbH
    Inventors: Manfred Wittner, Angela Hilgers, Geoffrey Detavernier, Michael Neidhoefer
  • Patent number: 10703831
    Abstract: The disclosure relates to a method for modifying the rheology of a polymer and a polymeric composition obtained by the method. The composition comprises at least one organic peroxide and water in emulsion form. The polymer may comprise a polyolefin. The method comprises extruding a molten polymer and the composition and removing volatile compounds from the molten polymer.
    Type: Grant
    Filed: February 10, 2016
    Date of Patent: July 7, 2020
    Assignee: Lummus Novolen Technology GmbH
    Inventors: Manfred Wittner, Angela Hilgers, Geoffrey Detavernier, Michael Neidhoefer
  • Publication number: 20180056584
    Abstract: A process and printer systems for printing a three-dimensional object are disclosed. The processes may include providing a non-crosslinked peroxydicarbonate-branched polypropylene filament, flake, pellet, or powder adapted for one of a fused deposition modeling (Arburg Plastic Freeforming) printer or a fused filament fabrication printer; and printing the non-crosslinked peroxydicarbonate-branched polypropylene with fused deposition modeling (Arburg Plastic Freeforming) printer or a fused filament fabrication printer to form a three-dimensional article. The printer systems may include one or more print heads for printing a polymer provided in filament, powder, flake, or pellet form to form a three-dimensional article; and one or more feed systems for providing a non-crosslinked peroxydicarbonate-branched polypropylene to a respective print head.
    Type: Application
    Filed: August 18, 2017
    Publication date: March 1, 2018
    Applicant: Lummus Novolen Technology GmbH
    Inventor: Manfred Wittner
  • Publication number: 20180030163
    Abstract: The disclosure relates to a method for modifying the rheology of a polymer and a polymeric composition obtained by the method. The composition comprises at least one organic peroxide and water in emulsion form. The polymer may comprise a polyolefin. The method comprises extruding a molten polymer and the composition and removing volatile compounds from the molten polymer.
    Type: Application
    Filed: February 10, 2016
    Publication date: February 1, 2018
    Applicant: Lummus Novolen Technology GmbH
    Inventors: Manfred Wittner, Angela Hilgers, Geoffrey Detavernier, Michael Neidhoefer
  • Patent number: 8231377
    Abstract: The invention provides a roll assembly including a pair of cylindrical rolls that are positioned in an opposing cooperating relation for receiving a sheet material therebetween. A plurality of projections on at least one of the rolls extending radially outward from a surface thereof and a plurality of corresponding recesses is provided on the other roll. The projections and corresponding recesses are positioned and arranged on the rolls for contacting and engaging a sheet passing between the pair of rolls. The projections each include an outermost surface portion that is positioned for contacting a discrete portion of the sheet and for entering a corresponding recess on the opposite roll. When rolls rotate about their axes, the projections engage the discrete portion of the sheet material which results in the discrete portion entering the recesses with the projections so as to stretch the sheet in multiple directions.
    Type: Grant
    Filed: January 31, 2007
    Date of Patent: July 31, 2012
    Assignee: Fiberweb Corovin GmbH
    Inventors: Manfred Wittner, Jean-Claude Abed
  • Publication number: 20120108714
    Abstract: A process to produce improved polypropylene nonwovens or yarns by extruding a mixture of polypropylene(s) and beta nucleating agent(s), or in the alternative, certain clarifiers, to form the improved polypropylene filaments.
    Type: Application
    Filed: October 28, 2011
    Publication date: May 3, 2012
    Applicant: LUMMUS NOVOLEN TECHNOLOGY GMBH
    Inventor: Manfred Wittner
  • Publication number: 20080248710
    Abstract: The invention relates to a two-dimensional web material made of a layer material and also a method and an apparatus for manufacturing the same, wherein the two-dimensional web material contains a non-woven material and has a Poisson's ratio of <0.2 during expansion in the machine direction.
    Type: Application
    Filed: March 15, 2006
    Publication date: October 9, 2008
    Inventor: Manfred Wittner
  • Publication number: 20070212966
    Abstract: The invention provides a roll assembly including a pair of cylindrical rolls that are positioned in an opposing cooperating relation for receiving a sheet material therebetween. A plurality of projections on at least one of the rolls extending radially outward from a surface thereof and a plurality of corresponding recesses is provided on the other roll. The projections and corresponding recesses are positioned and arranged on the rolls for contacting and engaging a sheet passing between the pair of rolls. The projections each include an outermost surface portion that is positioned for contacting a discrete portion of the sheet and for entering a corresponding recess on the opposite roll. When rolls rotate about their axes, the projections engage the discrete portion of the sheet material which results in the discrete portion entering the recesses with the projections so as to stretch the sheet in multiple directions.
    Type: Application
    Filed: January 31, 2007
    Publication date: September 13, 2007
    Inventors: Manfred Wittner, Jean-Claude Abed
  • Publication number: 20070032771
    Abstract: An article of clothing made from an elastic nonwoven web, wherein the elastic nonwoven web comprises a plurality of multicomponent strands having first and second polymer components longitudinally coextensive along the length of the strands, said first component comprising an elastomeric polymer, and said second polymer component comprising a polymer less elastic than the first polymer component.
    Type: Application
    Filed: May 24, 2006
    Publication date: February 8, 2007
    Inventors: Jean-Claude Abed, Manfred Wittner