Patents by Inventor Kirsten Markgraf

Kirsten Markgraf 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: 9540553
    Abstract: The present invention relates to a composition comprising a) at least one polyoxymethylene (A) having terminal OH-groups of more than 15 mmol/kg, b) at least one coupling agent (B), c) one or more hindered amine light stabilizer (C) having a molecular weight ranging from 500 to 1000 g/mol, and d) optionally at least one reinforcing fiber (D).
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: January 10, 2017
    Assignee: Ticona GmbH
    Inventors: Kirsten Markgraf, Bruce M. Mulholland, Dan Murena, Joachim Floeck
  • Publication number: 20160257805
    Abstract: The present invention relates to a molding composition, a process for the manufacturing of said molding composition, molded parts obtainable therefrom as well as the use of the molding composition for the manufacturing of molded parts used in the automotive industry, for housings, latches, window winding systems, wiper systems, pulleys, sun roof systems, seat adjustments, levers, gears, claws, pivot housing, brackets, wiper arms or seat rails.
    Type: Application
    Filed: March 31, 2016
    Publication date: September 8, 2016
    Inventors: Kirsten Markgraf, Lowell Larson
  • Publication number: 20160177219
    Abstract: A tribologically modified polyoxymethylene polymer composition is disclosed. The polyoxymethylene polymer composition is comprised of a polyoxymethylene polymer, reinforcing fibers, and at least one tribological modifier. The tribological modifier may comprise at least one tribological modifier comprising an ultra-high molecular weight silicone having a kinematic viscosity of greater than about 100,000 mm2s?1. The composition may exhibit a dynamic coefficient of friction against a counter-material of from about 0.001 to about 0.2. The polyoxymethylene polymer compositions provide polymer articles with improved tribological properties and mechanical properties. In one embodiment, the composition contains a polyoxymethylene polymer having functional groups, a coupling agent, reinforcing fibers, and the above silicone.
    Type: Application
    Filed: December 16, 2015
    Publication date: June 23, 2016
    Inventors: Kirsten Markgraf, Qamer Zia
  • Patent number: 9303145
    Abstract: The present invention relates to a molding composition, a process for the manufacturing of this molding composition, the molded parts obtainable from this molding composition as well as the use of the molding composition for the manufacturing of molded parts used in the automotive industry, for housings, latches, window winding systems, wiper systems, pulleys, sun roof systems, seat adjustments, levers, gears, claws, pivot housing, brackets, wiper arms or seat rails. The molding composition contains at least one polyoxymethylene having terminal OH-groups between 20 mmol/kg and 50 mmol/kg, at least one polyisocyante coupling agent, at least one reinforcing glass fiber that has been sized, and optionally at least one formaldehyde scavenger. The moldings produced from this molding composition are distinguished by their improved mechanical properties while having low formaldehyde emissions and excellent tensile strength while having a good flex fatigue and creep performance.
    Type: Grant
    Filed: October 14, 2011
    Date of Patent: April 5, 2016
    Assignee: Ticona GmbH
    Inventors: Kirsten Markgraf, Lowell Larson
  • Publication number: 20150299544
    Abstract: The present invention relates to a composition comprising a) at least one polyoxymethylene (A) having terminal OH-groups of more than 15 mmol/kg, b) at least one coupling agent (B), c) one or more hindered amine light stabilizer (C) having a molecular weight ranging from 500 to 1000 g/mol, and d) optionally at least one reinforcing fiber (D).
    Type: Application
    Filed: March 15, 2013
    Publication date: October 22, 2015
    Applicant: Ticona GmbH
    Inventors: Kirsten MARKGRAF, Bruce M. MULHOLLAND, Dan MURENA, Joachim FLOECK
  • Patent number: 9062183
    Abstract: The present disclosure relates to a molding composition and to molded products made from the composition. In accordance with the present disclosure, the polymer composition contains a polyoxymethylene copolymer having a relatively low amount of comonomer units. The polyoxymethylene polymer is combined with at least one reinforcing fiber and a coupling agent. The above polymer produces a composition have a relatively high heat deflection temperature, while also having excellent mechanical properties.
    Type: Grant
    Filed: December 20, 2013
    Date of Patent: June 23, 2015
    Assignee: Ticona GmbH
    Inventors: Kirsten Markgraf, Ursula Ziegler
  • Publication number: 20150111796
    Abstract: A tribologically modified polyoxymethylene polymer composition is disclosed. The polyoxymethylene polymer composition is comprised of a polyoxymethylene polymer and at least one tribological modifier. The tribological modifier may comprise at least one tribological modifier comprising an ultra-high molecular weight silicone having a kinematic viscosity of greater than 100,000 mm2s?1. The composition may exhibit a dynamic coefficient of friction against a counter-material of from about 0.01 to about 0.15. The polyoxymethylene polymer compositions provide polymer articles with improved tribological properties and mechanical properties.
    Type: Application
    Filed: October 10, 2014
    Publication date: April 23, 2015
    Inventors: Qamer Zia, Oliver Juenger, Jos Bastiaens, Kirsten Markgraf
  • Publication number: 20150065654
    Abstract: Disclosed is a tribologically modified molding composition, a method for the manufacturing of molded article by melt mixing said molding composition, molded article obtainable therefrom as well as the use of the molding composition for the manufacturing of molded parts used in the automotive industry or for housings, latches, window winding systems, wiper systems, pulleys, sun roof systems, seat adjustments, levers, gears, claws, pivot housings, wiper arms, brackets or seat rails bearings, gears, cams, rollers, sliding elements such as sliding plates, conveyer belt parts such as chain elements and links, castors, fasteners, levers, conveyor system wear strips and guard rails.
    Type: Application
    Filed: March 15, 2013
    Publication date: March 5, 2015
    Inventors: Kirsten Markgraf, Oliver Juenger
  • Patent number: 8865805
    Abstract: The present invention relates to a molding composition, a process for the manufacturing of said molding composition, molded parts obtainable therefrom as well as the use of the molding composition for the manufacturing of molded parts used in the automotive industry, for housings, latches, window winding systems, wiper systems, sun roof systems, seat adjustments, levers, gears, claws, pivot housing or wiper arms.
    Type: Grant
    Filed: October 12, 2012
    Date of Patent: October 21, 2014
    Assignee: Ticona GmbH
    Inventors: Kirsten Markgraf, Oliver Jünger, Ing. Joachim Flöck
  • Patent number: 8829085
    Abstract: The present invention relates to a molding composition, a process for the manufacturing of said molding composition, molded parts obtainable therefrom as well as the use of the molding composition for the manufacturing of molded parts used in the automotive industry, for housings, latches, window winding systems, wiper systems, sun roof systems, seat adjustments, levers, gears, claws, pivot housing or wiper arms.
    Type: Grant
    Filed: October 14, 2011
    Date of Patent: September 9, 2014
    Assignee: Ticona GmbH
    Inventors: Kirsten Markgraf, Lowell Larson
  • Publication number: 20140179865
    Abstract: The present disclosure relates to a molding composition and to molded products made from the composition. In accordance with the present disclosure, the polymer composition contains a polyoxymethylene copolymer having a relatively low amount of comonomer units. The polyoxymethylene polymer is combined with at least one reinforcing fiber and a coupling agent. The above polymer produces a composition have a relatively high heat deflection temperature, while also having excellent mechanical properties.
    Type: Application
    Filed: December 20, 2013
    Publication date: June 26, 2014
    Applicant: Ticona GmbH
    Inventors: Kirsten Markgraf, Ursula Ziegler
  • Publication number: 20130331488
    Abstract: The present invention relates to a molding composition, a process for the manufacturing of said molding composition, molded parts obtainable therefrom as well as the use of the molding composition for the manufacturing of molded parts used in the automotive industry, for housings, latches, window winding systems, wiper systems, pulleys, sun roof systems, seat adjustments, levers, gears, claws, pivot housing, brackets, wiper arms or seat rails.
    Type: Application
    Filed: October 14, 2011
    Publication date: December 12, 2013
    Applicant: Ticona GmbH
    Inventors: Kirsten Markgraf, Lowell Larson
  • Publication number: 20130323451
    Abstract: The present invention relates to a molding composition, molded parts obtainable therefrom as well as the use of the molding composition for the manufacturing of molded parts used in the automotive industry, as well as for cables, pipes, tubes, corrugated pipes, fuel pipes, air pipes, fuel hoses, break hoses, air hoses, hydraulic hoses, pneumatic hoses, pressure hoses, and connection assemblies.
    Type: Application
    Filed: October 14, 2011
    Publication date: December 5, 2013
    Applicant: Ticona GmbH
    Inventors: Oliver Jünger, Kirsten Markgraf
  • Publication number: 20120157588
    Abstract: The present invention relates to a molding composition, a process for the manufacturing of said molding composition, molded parts obtainable therefrom as well as the use of the molding composition for the manufacturing of molded parts used in the automotive industry, for housings, latches, window winding systems, wiper systems, sun roof systems, seat adjustments, levers, gears, claws, pivot housing or wiper arms.
    Type: Application
    Filed: October 14, 2011
    Publication date: June 21, 2012
    Applicant: TICONA GMBH
    Inventors: Kirsten Markgraf, Lowell Larson
  • Patent number: 8008390
    Abstract: Polyoxymethylene molding compositions, their use, and moldings produced therefrom A ground molding composition is described, comprising a) a compounded material composed of i) at least one polyoxymethylene homo- and/or copolymer, ii) at least one impact modifier, and iii) optionally other conventional additives, which b) has been milled to give a powder at least 90% by weight of whose particles have a grain size of <600 ?m and a median grain size (D50) of from 100 to 500 ?m. These molding compositions can be processed to give moldings, in particular via rotomolding.
    Type: Grant
    Filed: September 14, 2006
    Date of Patent: August 30, 2011
    Assignee: Ticona GmbH
    Inventors: Thomas Günnewig, Klaus Kurz, Guido Latz, Kirsten Markgraf
  • Publication number: 20070202332
    Abstract: Polyoxymethylene molding compositions, their use, and moldings produced therefrom A ground molding composition is described, comprising a) a compounded material composed of i) at least one polyoxymethylene homo- and/or copolymer, ii) at least one impact modifier, and iii) optionally other conventional additives, which b) has been milled to give a powder at least 90% by weight of whose particles have a grain size of <600 ?m and a median grain size (D50) of from 100 to 500 ?m. These molding compositions can be processed to give moldings, in particular via rotomolding.
    Type: Application
    Filed: October 26, 2006
    Publication date: August 30, 2007
    Applicant: TICONA GmbH
    Inventors: Thomas Gunnewig, Klaus Kurz, Guido Latz, Kirsten Markgraf
  • Publication number: 20070066746
    Abstract: Polyoxymethylene molding compositions, their use, and moldings produced therefrom A ground molding composition is described, comprising a) a compounded material composed of i) at least one polyoxymethylene homo-and/or copolymer, ii) at least one impact modifier, and iii) optionally other conventional additives, which b) has been milled to give a powder at least 90% by weight of whose particles have a grain size of <600 ?m and a median grain size (D50) of from 100 to 500 ?m. These molding compositions can be processed to give moldings, in particular via rotomolding.
    Type: Application
    Filed: September 14, 2006
    Publication date: March 22, 2007
    Applicant: TICONA GmbH
    Inventors: Thomas Gunnewig, Klaus Kurz, Guido Latz, Kirsten Markgraf
  • Publication number: 20040148707
    Abstract: A process for the retanning of iron-tanned leather, comprising applying to iron-tanned leather condensates based on:
    Type: Application
    Filed: October 27, 2003
    Publication date: August 5, 2004
    Inventors: Martin Kleban, Ahmet Kaplan, Kirsten Markgraf, Dietrich Tegtmeyer, John D. Whiteman