Patents by Inventor Georg Stoeppelmann

Georg Stoeppelmann 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: 20050148728
    Abstract: The present invention relates to the use of thermoplastic polyamide moulding compositions with reduced or strongly reduced formation of solid deposits and/or coverings during a thermoplastic conversion into commodity goods in discontinuous processes in particular injection moulding, and continuous processes such as the extrusion of films, fibers, tubes and jacketings containing at least 20% by weight polyamide and/or at least one copolymer with at least 20% by weight polyamide components.
    Type: Application
    Filed: December 29, 2004
    Publication date: July 7, 2005
    Inventors: Georg Stoeppelmann, Ornulf Rexin, Eduard Schmid, Ralph Kettl, Manfred Hewel
  • Patent number: 6842574
    Abstract: The car industry increasingly uses plastic optical fibers whose protective sheathing (4) is made of a polyamide. As unmodified PA poorly adheres to the fluoropolymers often used as the material for the fiber cladding (3), the plastic optical fiber (2, 3) moves in relation to the protective sheathing (4) when the temperature varies. To suppress this effect referred to as “pistoning”, the connectors and holders of the optical fibers must apply very large clamping forces to the protective sheathing (4) and the plastic optical fiber (2, 3) arranged therein, resulting in an increased signal attenuation. The use of a modified PA can clearly improve the adherence of the protective sheathing (4) to the cladding (3) of a plastic optical fiber which is made of a fluoropolymer.
    Type: Grant
    Filed: March 30, 2000
    Date of Patent: January 11, 2005
    Assignee: EMS-Chemie AG
    Inventors: Hans-Matthias Horn, Joachim Schaefer, Ilona Schmidt, Helmut Thullen, Volker Eichhorn, Thomas Wutke, Georg Stoeppelmann
  • Publication number: 20030232207
    Abstract: Two-layered or three-layered polymer tubing for use as a pressurized fluid conduit in automobiles can be either walled or have walls continuously or partially corrugated. The tubing has an outer layer of a hard polymer molding material and an inner layer of a soft rubber-like polymer or a polymer mixture. The inner layer can be provided on the innerside with a layer of a thermoplastic adhesion-modified elastomer composition. The a materials are selected for the layers to provide a so-called “hard-soft-combination”. The rubber-like polymer composition has a hardness in the range of 30 Shore A to 60 Shore D, especially of about 30 Shore A to 90 Shore A, the compositions being selected so that they are processable by coextrusion or the so-called conex method and adhere directly to each other non-positively or positively fitted, i. e. without additional bonding agent, without delaminating.
    Type: Application
    Filed: May 7, 2003
    Publication date: December 18, 2003
    Applicant: EMS-CHEMIE AG
    Inventors: Helmut Thullen, Georg Stoeppelmann, Ralph Kettl, Michael Hoffmann
  • Patent number: 6469092
    Abstract: The invention concerns anti-static, peroxide-stable molding compounds on the basis of polyamides and/or polyesters, whereby the molding compounds are modified with very pure conductive carbon black with a low specific surface area. These anti-static molding compounds can be used for the production of injection-molded or extruded parts and the production of sheets or multi-layer hoses and tubes.
    Type: Grant
    Filed: April 29, 1999
    Date of Patent: October 22, 2002
    Assignee: ENS-Inventa AG
    Inventors: Georg Stöppelmann, Manfred Hewel
  • Patent number: 6284334
    Abstract: The invention relates to novel thermoplastic multi-layer composites comprising at least a) a layer formed from a molding compound based on a polyamide and b) a second layer formed from a molding compound based on a linear alternating polyketone polymer from carbon monoxide and an ethylenically unsaturated hydrocarbon compound, at least part of which layer b) is adjacent to layer a).
    Type: Grant
    Filed: December 22, 1998
    Date of Patent: September 4, 2001
    Assignee: EMS-Inventa AG
    Inventors: Georg Stöppelmann, Manfred Hewel
  • Patent number: 5869157
    Abstract: The invention is directed to a new adhesion promoter composition based on polyamide having an excess of amino end groups and at least one diamine added to the polymerized polyamide, said diamine being selected from substituted or unsubstituted, aliphatic C.sub.4 -C.sub.20 diamines or mixtures thereof. The adhesion promoter tightly connects thermoplastically workable fluoropolymers based on VDF, TFE and HFP with polyamides. The invention is also directed to thermoplastic multi-layer composites having at least one inside layer of thermoplastically workable fluoropolymers, at least one adhesion promoter layer composed of the aforementioned adhesion promoter molding compound, and having at least one polyamide outside layer, wherein these layers are tightly connected to one another. Finally, the invention is directed to multi-layer polymer tubes.
    Type: Grant
    Filed: August 5, 1997
    Date of Patent: February 9, 1999
    Assignee: EMS-Inventa AG
    Inventor: Georg Stoeppelmann
  • Patent number: 5869190
    Abstract: The invention is directed to a new adhesion promoter composition based on polyamide having an excess of amino end groups and at least one diamine added to the polymerized polyamide, said diamine being selected from substituted or unsubstituted, aliphatic C.sub.4 -C.sub.20 diamines or mixtures thereof. The adhesion promoter tightly connects thermoplastically workable fluoropolymers based on VDF, TFE and HFP with polyamides. The invention is also directed to thermoplastic multi-layer composites having at least one inside layer of thermoplastically workable fluoropolymers, at least one adhesion promoter layer composed of the aforementioned adhesion promoter molding compound, and having at least one polyamide outside layer, wherein these layers are tightly connected to one another. Finally, the invention is directed to multi-layer polymer tubes.
    Type: Grant
    Filed: August 4, 1997
    Date of Patent: February 9, 1999
    Assignee: EMS-Inventa AG
    Inventor: Georg Stoeppelmann
  • Patent number: 5850855
    Abstract: A flexible conduit for coolant having a high bursting pressure above 8 bar at 100.degree. C. and high hydrolysis resistance comprising an outer layer of a material selected from the group consisting of homopolyamides, copolyamides and mixtures thereof with an excess of amino terminal groups, a non-swelling inner layer made of a material selected from the group consisting of non-halogenated copolyolefins, non-halogenated homopolyolefins and mixtures thereof and a middle layer compatible with the inner and outer layers made of a homopolyolefin or a copolyolefin with grafted functional groups, the layers being coextruded and corrugated during coextrusion.
    Type: Grant
    Filed: February 2, 1996
    Date of Patent: December 22, 1998
    Assignee: Ems-Inventa AG
    Inventors: Franz Kerschbaumer, Wolfgang Pfleger, Georg Stoeppelmann
  • Patent number: 5804670
    Abstract: The invention is directed to a new adhesion promoter composition based on polyamide having an excess of amino end groups and at least one diamine added to the polymerized polyamide, said diamine being selected from substituted or unsubstituted, aliphatic C.sub.4 -C.sub.20 diamines or mixtures thereof. The adhesion promoter tightly connects thermoplastically workable fluoropolymers based on VDF, TFE and HFP with polyamides. The invention is also directed to thermoplastic multi-layer composites having at least one inside layer of thermoplastically workable fluoropolymers, at least one adhesion promoter layer composed of the aforementioned adhesion promoter molding compound, and having at least one polyamide outside layer, wherein these layers are tightly connected to one another. Finally, the invention is directed to multi-layer polymer tubes.
    Type: Grant
    Filed: October 2, 1996
    Date of Patent: September 8, 1998
    Assignee: Ems-Inventa AG
    Inventor: Georg Stoeppelmann
  • Patent number: 5716684
    Abstract: The present invention relates to polyamide/polyvinylidine fluoride blends and multilayer tubes made therefrom. The blends have spherical morphology and a polyamide matrix with dispersed polyvinylidine fluoride phases; with the polyamide of the polyamide/polyvinylidine fluoride blend having a shear viscosity of 1.5 to 7 times greater than that of the polyvinylidine fluoride of blend.
    Type: Grant
    Filed: May 26, 1995
    Date of Patent: February 10, 1998
    Assignee: Ems-Inventa AG
    Inventors: Georg Stoeppelmann, Wolfgang Pfleger
  • Patent number: 5474109
    Abstract: A multilayer polymer hose or pipe conduit which contains at least one barrier layer of polyester, which acts as a barrier to fuel being carried thereby. In a preferred form of the invention, the hose or conduit has an inner polyamide protective layer, an outer polyamide protective layer, an adhesion promotor layer between the barrier layer and the inner protective layer, and another adhesion layer between the barrier layer and the outer protective layer.
    Type: Grant
    Filed: April 26, 1993
    Date of Patent: December 12, 1995
    Assignee: EMS-Inventa AG
    Inventors: Georg Stoeppelmann, Bernhard Zeh