Patents by Inventor Christian Gerhard Krechel

Christian Gerhard Krechel 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).

  • 7XXX-series aluminium alloy product
    Patent number: 11981986
    Abstract: The invention relates to a wrought 7xxx-series aluminium alloy product having a composition comprising, in wt. %, Zn 6.40 to 7.50, Mg 2.15 to 2.75, Cu 1.20 to 2.00, and wherein Cu+Mg<4.50, and wherein Mg<2.5+5/3(Cu?1.2), Fe up to 0.25, Si up to 0.25, and optionally one or more elements selected from the group consisting of: (Zr up to 0.3, Cr up to 0.3, Mn up to 0.45, Ti up to 0.25, Sc up to 0.5, Ag up to 0.5), the balance being aluminium and impurities, and having been aged to achieve a conventional tensile yield strength (in MPa) measured in the L-direction measured at quarter thickness of more than 485?0.
    Type: Grant
    Filed: January 9, 2020
    Date of Patent: May 14, 2024
    Assignee: NOVELIS KOBLENZ GMBH
    Inventors: Achim Bürger, Sunil Khosla, Christian Gerhard Krechel, Sabine Maria Spangel, Philippe Meyer
  • 7XXX-series aluminium alloy product
    Patent number: 11879166
    Abstract: The invention relates to a wrought 7xxx-series aluminium alloy product having a composition comprising, in wt. %., Zn 6.20 to 7.50, Mg 2.15 to 2.75, Cu 1.20 to 2.00, and wherein Cu+Mg<4.50, and wherein Mg<2.5+5/3(Cu-1.2), Fe up to 0.25, Si up to 0.25, and optionally one or more elements selected from the group consisting of: (Zrup to 0.3,Crup to 0.3,Mnup to 0.45,Tiup to 0.25, Scup to 0.5, Agup to 0.5), the balance being aluminium and impurities.
    Type: Grant
    Filed: November 5, 2019
    Date of Patent: January 23, 2024
    Assignee: Novelis Koblenz GmbH
    Inventors: Achim Bürger, Philippe Meyer, Sunil Khosla, Sabine Maria Spangel, Christian Gerhard Krechel
  • 7XXX-SERIES ALUMINIUM ALLOY PRODUCT
    Publication number: 20220112588
    Abstract: The invention relates to a wrought 7xxx-series aluminium alloy product having a composition comprising, in wt. %., Zn 6.40 to 7.50, Mg 2.15 to 2.75, Cu 1.20 to 2.00, and wherein Cu+Mg<4.50, and wherein Mg<2.5+5/3(Cu?1.2), Fe up to 0.25, Si up to 0.25, and optionally one or more elements selected from the group consisting of: (Zr up to 0.3, Cr up to 0.3, Mn up to 0.45, Ti up to 0.25, Sc up to 0.5, Ag up to 0.5), the balance being aluminium and impurities, and having been aged to achieve a conventional tensile yield strength (in MPa) measured in the L-direction measured at quarter thickness of more than 485?0.
    Type: Application
    Filed: January 9, 2020
    Publication date: April 14, 2022
    Applicant: Aleris Rolled Products Germany GmbH
    Inventors: ACHIM BÜRGER, SUNIL KHOSLA, CHRISTIAN GERHARD KRECHEL, SABINE MARIA SPANGEL, PHILIPPE MEYER
  • 7XXX-SERIES ALUMINIUM ALLOY PRODUCT
    Publication number: 20210404037
    Abstract: The invention relates to a wrought 7xxx-series aluminium alloy product having a composition comprising, in wt. %., Zn 6.20 to 7.50, Mg 2.15 to 2.75, Cu 1.20 to 2.00, and wherein Cu+Mg<4.50, and wherein Mg<2.5+5/3(Cu-1.2), Fe up to 0.25, Si 0 up to 0.25, and optionally one or more elements selected from the group consisting of: (Zrup to 0.3,Crup to 0.3,Mnup to 0.45,Tiup to 0.25, Scup to 0.5, Agup to 0.5), the balance being aluminium and impurities.
    Type: Application
    Filed: November 5, 2019
    Publication date: December 30, 2021
    Inventors: Achim Bürger, Philippe Meyer, Sunil Khosla, Sabine Maria Spangel, Christian Gerhard Krechel