Patents by Inventor Harald Lemke

Harald Lemke 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: 20230349029
    Abstract: The present application relates to ferrous (steel) alloy compositions that can be printed by powder bed fusion additive manufacturing. The combination of printability and properties is achieved by formulating chemistries specifically for the powder bed fusion process.
    Type: Application
    Filed: June 22, 2021
    Publication date: November 2, 2023
    Applicant: MACLEAN-FOGG COMPANY
    Inventors: Jonathan TRENKLE, Harald LEMKE
  • Publication number: 20230249250
    Abstract: Metallic alloys and methods for the preparation of free-standing metallic materials in a layerwise manner. The resulting layerwise construction provides a metallic skeleton of selected porosity which may be infiltrated with a second metal to provide a free-standing material that has a volume loss of less than or equal to 130 mm3 as measured according to ASTM G65-04(2010).
    Type: Application
    Filed: March 31, 2023
    Publication date: August 10, 2023
    Applicant: MacLean-Fogg Company
    Inventors: Charles D. TUFFILE, Harald LEMKE, Patrick E. Mack
  • Publication number: 20230166330
    Abstract: A printed metallic part is provided. The alloy has the composition of Fe at 69.2 wt. % to 89.1 wt. %; Cr at 7.25 wt. % to 16.0 wt. %; Nb at 0.01 wt. % to 10.0 wt. %; Mo at 0.5 wt. % to 4.0 wt. %. C at 0.03 wt. % to 0.4 wt. % and optionally one or more of Ni, Cu, Si, W, Mn, N and B. The printed metallic part has a tensile strength of at least 1300 MPa, a yield strength of at least 700 MPa, an elongation of at least 4.0%, and a hardness of at least 45 HRC.
    Type: Application
    Filed: April 14, 2021
    Publication date: June 1, 2023
    Applicant: MACLEAN-FOGG COMPANY
    Inventors: Faith OEHLERKING, Jonathan TRENKLE, Harald LEMKE
  • Patent number: 11628493
    Abstract: Metallic alloys and methods for the preparation of free-standing metallic materials in a layerwise manner. The resulting layerwise construction provides a metallic skeleton of selected porosity which may be infiltrated with a second metal to provide a free-standing material that has a volume loss of less than or equal to 130 mm3 as measured according to ASTM G65-04 (2010).
    Type: Grant
    Filed: February 3, 2016
    Date of Patent: April 18, 2023
    Assignee: MACLEAN-FOGG COMPANY
    Inventors: Charles D. Tuffile, Harald Lemke, Patrick E. Mack
  • Publication number: 20230063455
    Abstract: Alloy compositions for 3D metal printing procedures which provide metallic parts with high hardness, tensile strengths, yield strengths, and elongation. The alloys include Fe, Cr and Mo and at least three or more elements selected from C, Ni, Cu, Nb, Si and N. As built parts indicate a tensile strength of at least 1000 MPa, yield strength of at least 640 MPa, elongation of at least 3.0% and hardness (HV) of at least 375.
    Type: Application
    Filed: November 3, 2022
    Publication date: March 2, 2023
    Applicant: MacLean-Fogg Company
    Inventors: Charles D. TUFFILE, Harald LEMKE
  • Publication number: 20220331857
    Abstract: The present invention relates to an iron-based alloy powder containing non-spherical particles wherein the alloy comprises the elements Fe (iron), Cr (chrome) and Mo (molybdenum), and at least 40% of the total amount of particles have a non-spherical shape. In said iron-based alloy powder, Cr is present at 10.0 wt. % to 18.3 wt. %, Mo is present at 0.5 wt. % to 2.5 wt. %, C is present at 0 to 0.30 wt. %, Ni is present at 0 to 4.0 wt. %, Cu is present at 0 to 4.0 wt. %, Nb is present at 0 to 0.7 wt. %, Si is present at 0 to 0.7 wt. % and N is present at 0 to 0.20 wt. %, the balance up to 100 wt. % is Fe.
    Type: Application
    Filed: September 3, 2020
    Publication date: October 20, 2022
    Inventors: Rudolf SEILER, Cecile MUELLER-WEITZEL, Matthias Johannes WAGNER, Rene ARBTER, Thorsten MArtin STAUDT, Marie-Claire HERMANT, Harald LEMKE, Jonathan TRENKLE
  • Publication number: 20210301362
    Abstract: Alloy compositions for 3D metal printing procedures which provide metallic parts with high hardness, tensile strengths, yield strengths, and elongation. The alloys include Fe, Cr and Mo and at least three or more elements selected from C, Ni, Cu, Nb, Si and N. As built parts indicate a tensile strength of at least 1000 MPa, yield strength of at least 640 MPa, elongation of at least 3.0% and hardness (HV) of at least 375.
    Type: Application
    Filed: February 15, 2021
    Publication date: September 30, 2021
    Applicant: MACLEAN-FOGG COMPANY
    Inventors: Charles D. TUFFILE, Harald LEMKE
  • Patent number: 10953465
    Abstract: The present invention relates to alloy compositions for 3D metal printing procedures which provide metallic parts with high hardness, tensile strengths, yield strengths, and elongation. The alloys include Fe, Cr and Mo and at least three or more elements selected from C, Ni, Cu, Nb, Si and N. Ni may be replaced with Mn. As built parts indicate a tensile strength of at least 1000 MPa, yield strength of at least 640 MPa, elongation of at least 3.0% and hardness (HV) of at least 375.
    Type: Grant
    Filed: April 24, 2019
    Date of Patent: March 23, 2021
    Assignee: The NanoSteel Company, Inc.
    Inventors: Charles D. Tuffile, Harald Lemke
  • Patent number: 10920295
    Abstract: The present invention relates to alloy compositions for 3D metal printing procedures which provide metallic parts with high hardness, tensile strengths, yield strengths, and elongation. The alloys include Fe, Cr and Mo and at least three or more elements selected from C, Ni, Cu, Nb, Si and N. As built parts indicate a tensile strength of at least 1000 MPa, yield strength of at least 640 MPa, elongation of at least 3.0% and hardness (HV) of at least 375.
    Type: Grant
    Filed: November 1, 2017
    Date of Patent: February 16, 2021
    Assignee: The NanoSteel Company, Inc.
    Inventors: Charles D. Tuffile, Harald Lemke
  • Patent number: 10851445
    Abstract: The present disclosure is directed at alloys and method for layer-by-layer deposition of metallic alloys on a substrate to produce a metallic part. Applications for the metallic parts include pumps, pump parts, valves, molds, bearings, cutting tools, filters or screens.
    Type: Grant
    Filed: November 2, 2016
    Date of Patent: December 1, 2020
    Assignee: The NanoSteel Company, Inc.
    Inventors: Charles D. Tuffile, Harald Lemke, Patrick E. Mack
  • Patent number: 10654100
    Abstract: The present disclosure is directed at alloys and method for layer-by-layer deposition of metallic alloys on a substrate. The resulting deposition provides for relatively high hardness metallic parts with associated wear resistance. Applications for the metallic parts include pumps, valves and/or bearings.
    Type: Grant
    Filed: May 18, 2015
    Date of Patent: May 19, 2020
    Assignee: The NanoSteel Company, Inc.
    Inventors: Charles D. Tuffile, Harald Lemke
  • Publication number: 20190262944
    Abstract: The present invention relates to alloy compositions for 3D metal printing procedures which provide metallic parts with high hardness, tensile strengths, yield strengths, and elongation. The alloys include Fe, Cr and Mo and at least three or more elements selected from C, Ni, Cu, Nb, Si and N. Ni may be replaced with Mn. As built parts indicate a tensile strength of at least 1000 MPa, yield strength of at least 640 MPa, elongation of at least 3.0% and hardness (HV) of at least 375.
    Type: Application
    Filed: April 24, 2019
    Publication date: August 29, 2019
    Inventors: Charles D. Tuffile, Harald Lemke
  • Publication number: 20180332028
    Abstract: A method for operating a digital security token in a data network terminal (12) includes provisioning the digital security token in the data network terminal (12), examining a test characteristic (Pz) with a server (14) based on information about the test characteristic (Pz) and a connection of the test characteristic (Pz) to a user (C) in the context of the use of the digital security token for authenticating the user (C) and/or in the context of a periodic routine examination, and transmitting a new test characteristic (Pz) from the server (14) to the data network terminal (12) only if the examined test characteristic (Pz) is accurate. The new test characteristic (Pz) is necessary for continued operation of the digital security token.
    Type: Application
    Filed: February 6, 2018
    Publication date: November 15, 2018
    Inventors: Harald Lemke, Mike Bobinski, Steven Engelhard
  • Publication number: 20180119239
    Abstract: The present invention relates to alloy compositions for 3D metal printing procedures which provide metallic parts with high hardness, tensile strengths, yield strengths, and elongation. The alloys include Fe, Cr and Mo and at least three or more elements selected from C, Ni, Cu, Nb, Si and N. As built parts indicate a tensile strength of at least 1000 MPa, yield strength of at least 640 MPa, elongation of at least 3.0% and hardness (HV) of at least 375.
    Type: Application
    Filed: November 1, 2017
    Publication date: May 3, 2018
    Inventors: Charles D. TUFFILE, Harald LEMKE
  • Patent number: 9716591
    Abstract: The invention relates to a method for authorizing a second client (C2) to a server (S) for a user account for setting up a secure connection between the second client (C2) and a first client (C1).
    Type: Grant
    Filed: November 28, 2013
    Date of Patent: July 25, 2017
    Assignees: Deutsche Post AG, Fraunhofer-Gesellschaft Zur Forderung Der Angewandten Forschung E.V.
    Inventors: Harald Lemke, Marcel Kulicke, Angelika Schneider, Yves Hetzer
  • Publication number: 20170121798
    Abstract: The present disclosure is directed at alloys and method for layer-by-layer deposition of metallic alloys on a substrate to produce a metallic part. Applications for the metallic parts include pumps, pump parts, valves, molds, bearings, cutting tools, filters or screens.
    Type: Application
    Filed: November 2, 2016
    Publication date: May 4, 2017
    Inventors: Charles D. TUFFILE, Harald LEMKE, Patrick E. MACK
  • Publication number: 20170080497
    Abstract: Layer-by-layer construction of metallic alloys preferably via binder jetting followed by sintering and binder removal to form a porous metallic skeleton which then may be infiltrated with an infiltrant to provide a free-standing metallic part. The part indicates a volume loss of less than or equal to 200 mm3 as measured by ASTM G65-10 Procedure A (2010) and an un-notched impact toughness of greater than or equal to 55 J according to ASTM E21-12 (2012).
    Type: Application
    Filed: September 20, 2016
    Publication date: March 23, 2017
    Inventors: Charles D. TUFFILE, Harald LEMKE, Patrick E. MACK
  • Publication number: 20160221083
    Abstract: Metallic alloys and methods for the preparation of free-standing metallic materials in a layerwise manner. The resulting layerwise construction provides a metallic skeleton of selected porosity which may be infiltrated with a second metal to provide a free-standing material that has a volume loss of less than or equal to 130 mm3 as measured according to ASTM G65-04 (2010).
    Type: Application
    Filed: February 3, 2016
    Publication date: August 4, 2016
    Inventors: Charles D. TUFFILE, Harald LEMKE, Patrick E. MACK
  • Publication number: 20150328680
    Abstract: The present disclosure is directed at alloys and method for layer-by-layer deposition of metallic alloys on a substrate. The resulting deposition provides for relatively high hardness metallic parts with associated wear resistance. Applications for the metallic parts include pumps, valves and/or bearings.
    Type: Application
    Filed: May 18, 2015
    Publication date: November 19, 2015
    Inventors: Charles D. Tuffile, Harald Lemke
  • Publication number: 20150326395
    Abstract: The invention relates to a method for authorising a second client (C2) to a server (S) for a user account for setting up a secure connection between the second client (C2) and a first client (C1).
    Type: Application
    Filed: November 28, 2013
    Publication date: November 12, 2015
    Inventors: Harald Lemke, Marcel Kulicke, Angelika Schneider, Yves Hetzer