Patents by Inventor Stefan Pfeifer

Stefan Pfeifer 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: 11505729
    Abstract: Materials from the group consisting of a) one or more hybrid materials containing an organic polymer from the group of the polyamides, polyimides and epoxy resins and an inorganic oligo- or polymer from the group of the oligo- and polysiloxanes and heterocondensates of Si with Ti, Zr and/or Al, wherein the organic and the inorganic component are covalently bound to one another, in combination with one or more inorganic sols based on silyl alkoxylates and/or titanium alkoxylates, wherein hybrid material and inorganic sol are crosslinked, b) one or more hybrid materials containing an organic polymer from the group of the polyamides, polyimides and epoxy resins and an inorganic oligo- or polymer from the group of the oligo- and polysiloxanes and heterocondensates of Si with Ti, Zr and/or Al, wherein the organic and the inorganic component are covalently bound to one another, c) one or more inorganic sols based on silyl alkoxylates and/or titanium alkoxylates and d) one or more polyamides, polyimides and/or epox
    Type: Grant
    Filed: March 10, 2017
    Date of Patent: November 22, 2022
    Assignee: EPG (ENGINEERED NANOPRODUCTS GERMANY) AG
    Inventors: Heike Schneider, Stefan Pfeifer, Ralf Kockler, Klaus Endres
  • Patent number: 10308817
    Abstract: The invention relates to a protection layer which is used as anticorrosion layer on corrosion-prone substrates, especially corroding metals, alloys and other materials, especially on steel, and as a basecoat for the application of further porous layer systems or as a topcoat, and to the process for production thereof and to use on a coated substrate for protection against corrosion and specifically for use against microbially induced corrosion (MIC), wherein the anticorrosion layer comprises a high-density protection layer on a corrosion-prone substrate, containing pre-condensed layer-forming alkoxysilane precursors, wherein the molecules of the pre-condensed layer-forming alkoxysilane precursors are formed from monomer units selected from the group of the triethoxysilane precursors, wherein the molecules of the pre-condensed layer-forming alkoxysilane precursors are crosslinked with one another, and wherein the high-density protection layer has a layer thickness of at least 50 ?m.
    Type: Grant
    Filed: November 7, 2014
    Date of Patent: June 4, 2019
    Assignee: EPG Engineered nanoProducts Germany AG
    Inventors: Edwin Kroke, Stefan Pfeifer
  • Publication number: 20190023955
    Abstract: Materials from the group consisting of a) one or more hybrid materials containing an organic polymer from the group of the polyamides, polyimides and epoxy resins and an inorganic oligo- or polymer from the group of the oligo- and polysiloxanes and heterocondensates of Si with Ti, Zr and/or Al, wherein the organic and the inorganic component are covalently bound to one another, in combination with one or more inorganic sols based on silyl alkoxylates and/or titanium alkoxylates, wherein hybrid material and inorganic sol are crosslinked, b) one or more hybrid materials containing an organic polymer from the group of the polyamides, polyimides and epoxy resins and an inorganic oligo- or polymer from the group of the oligo- and polysiloxanes and heterocondensates of Si with Ti, Zr and/or Al, wherein the organic and the inorganic component are covalently bound to one another, c) one or more inorganic sols based on silyl alkoxylates and/or titanium alkoxylates and d) one or more polyamides, polyimides and/or ep
    Type: Application
    Filed: March 10, 2017
    Publication date: January 24, 2019
    Applicant: EPG (ENGINEERED NANOPRODUCTS GERMANY) AG
    Inventors: Heike Schneider, Stefan Pfeifer, Ralf Kockler, Klaus Endres
  • Publication number: 20170009082
    Abstract: The invention relates to a protection layer which is used as anticorrosion layer on corrosion-prone substrates, especially corroding metals, alloys and other materials, especially on steel, and as a basecoat for the application of further porous layer systems or as a topcoat, and to the process for production thereof and to use on a coated substrate for protection against corrosion and specifically for use against microbially induced corrosion (MIC), wherein the anticorrosion layer comprises a high-density protection layer on a corrosion-prone substrate, containing pre-condensed layer-forming alkoxysilane precursors, wherein the molecules of the pre-condensed layer-forming alkoxysilane precursors are formed from monomer units selected from the group of the triethoxysilane precursors, wherein the molecules of the pre-condensed layer-forming alkoxysilane precursors are crosslinked with one another, and wherein the high-density protection layer has a layer thickness of at least 50 ?m.
    Type: Application
    Filed: November 7, 2014
    Publication date: January 12, 2017
    Inventors: Edwin Kroke, Stefan Pfeifer