Patents by Inventor Keerti S. Kappagantula

Keerti S. Kappagantula 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: 20240112827
    Abstract: A method of forming a metal-graphene composite includes coating metal components (10) with graphene (14) to form graphene-coated metal components, combining a plurality of the graphene-coated metal components to form a precursor workpiece (26), and working the precursor workpiece (26) into a bulk form (30) to form the metal-graphene composite. A metal-graphene composite includes graphene (14) in a metal matrix wherein the graphene (14) is single-atomic layer or multi-layer graphene (14) distributed throughout the metal matrix and primarily (but not exclusively) oriented with a plane horizontal to an axial direction of the metal-graphene composite.
    Type: Application
    Filed: December 12, 2023
    Publication date: April 4, 2024
    Inventors: Keerti S. Kappagantula, Frank Frederick Kraft
  • Patent number: 11946504
    Abstract: Riveted assemblies are provided that can include a substrate extending between two ends to define opposing substrate surfaces having a first opening extending between the opposing substrate surfaces; a metal-comprising substrate extending between two ends to define opposing metal-comprising substrate surfaces having a second opening extending between the opposing metal-comprising substrate surfaces. The riveted assemblies can further provide that the first and second openings complement one another when the substrate and metal-comprising substrate are engaged; and a rivet shaft extends through the openings and engages the substrate with the rivet head and the metal-comprising substrate with the rivet stop head, at least a portion of the stop head being mixed with, and forming a metallurgical bond with the metal-comprising substrate. Assemblies are provided that can include a rivet stop head mixed with, and metallurgically bonded with a metal-comprising substrate.
    Type: Grant
    Filed: November 3, 2022
    Date of Patent: April 2, 2024
    Assignee: Battelle Memorial Institute
    Inventors: Scott A. Whalen, Tianhao Wang, Piyush Upadhyay, Keerti S. Kappagantula
  • Patent number: 11854715
    Abstract: A method of forming a metal-graphene composite includes coating metal components (10) with graphene (14) to form graphene-coated metal components, combining a plurality of the graphene-coated metal components to form a precursor workpiece (26), and working the precursor workpiece (26) into a bulk form (30) to form the metal-graphene composite. A metal-graphene composite includes graphene (14) in a metal matrix wherein the graphene (14) is single-atomic layer or multi-layer graphene (14) distributed throughout the metal matrix and primarily (but not exclusively) oriented with a plane horizontal to an axial direction of the metal-graphene composite.
    Type: Grant
    Filed: September 27, 2017
    Date of Patent: December 26, 2023
    Assignee: Ohio University
    Inventors: Keerti S. Kappagantula, Frank Frederick Kraft
  • Publication number: 20230234115
    Abstract: An extrusion feedstock material is provided, the material comprising a length of one material extending from a first end to a second end; and at least one slot extending lengthwise within the one material between the first and second ends of the material. A process for extruding conductive material is also provided, the process comprising providing both rotational and axial forces between a die tool and a length of feedstock material to form an extrusion product, wherein the length of feedstock and conductive material comprise Al and NanoCrystalline Carbon Forms (NCCF). A process for extruding material is provided, the process comprising: providing both rotational and axial forces between a die tool and a length of feedstock material to form an extrusion product, wherein the length of feedstock material comprises: a length of material extending from a first end to a second end; and at least one slot extending lengthwise within the material between the first and second ends of the material.
    Type: Application
    Filed: March 14, 2023
    Publication date: July 27, 2023
    Applicant: Battelle Memorial Institute
    Inventors: Keerti S. Kappagantula, Glenn J. Grant, Aditya K. Nittala, Xiao Li, MD. Reza-E-Rabby, WoongJo Choi, Bharat Gwalani, Joshua A. Silverstein
  • Publication number: 20230076727
    Abstract: Riveted assemblies are provided that can include a substrate extending between two ends to define opposing substrate surfaces having a first opening extending between the opposing substrate surfaces; a metal-comprising substrate extending between two ends to define opposing metal-comprising substrate surfaces having a second opening extending between the opposing metal-comprising substrate surfaces. The riveted assemblies can further provide that the first and second openings complement one another when the substrate and metal-comprising substrate are engaged; and a rivet shaft extends through the openings and engages the substrate with the rivet head and the metal-comprising substrate with the rivet stop head, at least a portion of the stop head being mixed with, and forming a metallurgical bond with the metal-comprising substrate. Assemblies are provided that can include a rivet stop head mixed with, and metallurgically bonded with a metal-comprising substrate.
    Type: Application
    Filed: November 3, 2022
    Publication date: March 9, 2023
    Applicant: Battelle Memorial Institute
    Inventors: Scott A. Whalen, Tianhao Wang, Piyush Upadhyay, Keerti S. Kappagantula
  • Patent number: 11549532
    Abstract: Riveted assemblies are provided that can include a substrate extending between two ends to define opposing substrate surfaces having a first opening extending between the opposing substrate surfaces; a metal-comprising substrate extending between two ends to define opposing metal-comprising substrate surfaces having a second opening extending between the opposing metal-comprising substrate surfaces. The riveted assemblies can further provide that the first and second openings complement one another when the substrate and metal-comprising substrate are engaged; and a rivet shaft extends through the openings and engages the substrate with the rivet head and the metal-comprising substrate with the rivet stop head, at least a portion of the stop head being mixed with, and forming a metallurgical bond with the metal-comprising substrate. Assemblies are provided that can include a rivet stop head mixed with, and metallurgically bonded with a metal-comprising substrate.
    Type: Grant
    Filed: September 8, 2020
    Date of Patent: January 10, 2023
    Assignee: Battelle Memorial Institute
    Inventors: Scott A. Whalen, Tianhao Wang, Piyush Upadhyay, Keerti S. Kappagantula
  • Publication number: 20210197241
    Abstract: Shear assisted extrusion processes (ShAPE) for forming Metal-NCCF extrusions are provided. The processes can include: using a die tool, applying a rotational shearing force and an axial extrusion force to a feedstock material comprising a metal and NCCF (NanoCrystalline Carbon Films); and extruding a mixture comprising the metal and NCCF through an opening in the die tool to form the Metal-NCCF extrusion. ShAPE feedstock materials are provided that can include a metal and NCCF. Conductive solid material mixtures are provided that can include a metal and a NCCF. Portions of the metals and NCCF of the material mixtures can have an isotropic crystallographic orientation. Assemblies relying in part on conductivity can include: a conductive solid material mixture that includes: a metal; and a NCCF.
    Type: Application
    Filed: September 28, 2020
    Publication date: July 1, 2021
    Inventors: Glenn J. Grant, Keerti S. Kappagantula, Xiao Li
  • Publication number: 20210102071
    Abstract: A composite is formed from a combination of a polymer and pulverized coal and optionally a compatibilizing agent. The coal forms from about 10 to about 80% of the composite. The composite is form by blending the pulverized coal with the polymer to form the composite.
    Type: Application
    Filed: April 5, 2018
    Publication date: April 8, 2021
    Applicant: Ohio University
    Inventors: Jason Patrick Trembly, Keerti S. Kappagantula
  • Publication number: 20190267153
    Abstract: A method of forming a metal-graphene composite includes coating metal components (10) with graphene (14) to form graphene-coated metal components, combining a plurality of the graphene-coated metal components to form a precursor workpiece (26), and working the precursor workpiece (26) into a bulk form (30) to form the metal-graphene composite. A metal-graphene composite includes graphene (14) in a metal matrix wherein the graphene (14) is single-atomic layer or multi-layer graphene (14) distributed throughout the metal matrix and primarily (but not exclusively) oriented with a plane horizontal to an axial direction of the metal-graphene composite.
    Type: Application
    Filed: September 27, 2017
    Publication date: August 29, 2019
    Applicants: Ohio University, Ohio University
    Inventors: Keerti S. Kappagantula, Frank Frederick Kraft