Patents by Inventor Robert Warren Stemke

Robert Warren Stemke 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).

  • Joining and sealing pressurized ceramic structures
    Patent number: 11881322
    Abstract: This patent document relates to systems, structures, devices, and fabrication processes for ceramic matrix composites suitable for use in a nuclear reactor environment and other applications requiring materials that can withstand high temperatures and/or highly corrosive environments. In one exemplary aspect, a method of joining and sealing ceramic structures is disclosed. The method comprises forming a joint of a ceramic structure and an end plug using a sealing material, wherein the end plug has a hole that goes through a top surface and a bottom surface of the end plug; filling the ceramic structure with a desired gas composition through the hole; heating a material into a molten form using a heat source; and directing the material into the hole, wherein the material solidifies to seal the end plug.
    Type: Grant
    Filed: January 20, 2021
    Date of Patent: January 23, 2024
    Assignee: General Atomics
    Inventors: Jonathan David Sheeder, Jiping Zhang, Christian Peter Deck, Hesham Ezzat Khalifa, Robert Warren Stemke, Brian Stephen Austin, Gokul Vasudevamurthy, Carlos Bacalski, Eric Song, Christina Allyssa Back
  • JOINING AND SEALING PRESSURIZED CERAMIC STRUCTURES
    Publication number: 20210166825
    Abstract: This patent document relates to systems, structures, devices, and fabrication processes for ceramic matrix composites suitable for use in a nuclear reactor environment and other applications requiring materials that can withstand high temperatures and/or highly corrosive environments. In one exemplary aspect, a method of joining and sealing ceramic structures is disclosed. The method comprises forming a joint of a ceramic structure and an end plug using a sealing material, wherein the end plug has a hole that goes through a top surface and a bottom surface of the end plug; filling the ceramic structure with a desired gas composition through the hole; heating a material into a molten form using a heat source; and directing the material into the hole, wherein the material solidifies to seal the end plug.
    Type: Application
    Filed: January 20, 2021
    Publication date: June 3, 2021
    Inventors: Jonathan David Sheeder, Jiping Zhang, Christian Peter Deck, Hesham Ezzat Khalifa, Robert Warren Stemke, Brian Stephen Austin, Gokul Vasudevamurthy, Carlos Bacalski, Eric Song, Christina Allyssa Back