Patents by Inventor Dharmendra CHALASANI

Dharmendra CHALASANI 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: 20260088242
    Abstract: The present disclosure relates to a high voltage vacuum tube including: a vacuum tube envelope including an interior; an anode assembly disposed within the interior of the vacuum tube envelope; and a cathode assembly disposed within interior of the vacuum tube envelope that emits an electron beam to strike a target surface of the anode assembly and form electromagnetic radiation. The high voltage vacuum tube includes a braze assembly, the braze assembly including a first component and a second component joined together by a first braze joint, the first braze joint including a composition configured to include a solidification temperature range of no more than 90° C. and a liquidus temperature in the range of 950° C. to 1060° C.; the braze joint including no more than 30.0 wt % in total of one of more precious metals selected from Au, Pd and Pt, relative to the total weight of the first braze joint.
    Type: Application
    Filed: December 3, 2025
    Publication date: March 26, 2026
    Inventors: Edgar Vanegas HURTADO, Nathan Russell DAUBENMIER, Thomas A. SANDIN, Antonio RAMIREZ, Dharmendra CHALASANI
  • Publication number: 20260071300
    Abstract: The present invention relates to a braze alloy composition including in weight %: 80 ? to 97.98 Cu ; 2. ? Ge ? 9.5 ; 0.02 < B ? 1.25 ; and incidental impurities. The braze alloy composition includes no more than 0.4 wt % Sn.
    Type: Application
    Filed: November 14, 2025
    Publication date: March 12, 2026
    Inventors: Thomas A. SANDIN, Edgar Vanegas HURTADO, Nathan Russell DAUBENMIER, Antonio RAMIREZ, Dharmendra CHALASANI
  • Patent number: 12531201
    Abstract: The present disclosure relates to a high voltage vacuum tube including: a vacuum tube envelope including an interior; an anode assembly disposed within the interior of the vacuum tube envelope; and a cathode assembly disposed within interior of the vacuum tube envelope that emits an electron beam to strike a target surface of the anode assembly and form electromagnetic radiation. The high voltage vacuum tube includes a braze assembly, the braze assembly including a first component and a second component joined together by a first braze joint, the first braze joint including a composition configured to include a solidification temperature range of no more than 90° C. and a liquidus temperature in the range of 950° C. to 1060° C.; the braze joint including no more than 30.0 wt % in total of one of more precious metals selected from Au, Pd and Pt, relative to the total weight of the first braze joint.
    Type: Grant
    Filed: March 14, 2025
    Date of Patent: January 20, 2026
    Assignee: MORGAN ADVANCED CERAMICS, INC.
    Inventors: Edgar Vanegas Hurtado, Nathan Russell Daubenmier, Thomas A. Sandin, Antonio Ramirez, Dharmendra Chalasani
  • Publication number: 20250246395
    Abstract: The present disclosure relates to a high voltage vacuum tube including: a vacuum tube envelope including an interior; an anode assembly disposed within the interior of the vacuum tube envelope; and a cathode assembly disposed within interior of the vacuum tube envelope that emits an electron beam to strike a target surface of the anode assembly and form electromagnetic radiation. The high voltage vacuum tube includes a braze assembly, the braze assembly including a first component and a second component joined together by a first braze joint, the first braze joint including a composition configured to include a solidification temperature range of no more than 90° C. and a liquidus temperature in the range of 950° C. to 1060° C.; the braze joint including no more than 30.0 wt % in total of one of more precious metals selected from Au, Pd and Pt, relative to the total weight of the first braze joint.
    Type: Application
    Filed: March 14, 2025
    Publication date: July 31, 2025
    Inventors: Edgar Vanegas HURTADO, Nathan Russell DAUBENMIER, Thomas A. SANDIN, Antonio RAMIREZ, Dharmendra CHALASANI
  • Patent number: 12283449
    Abstract: The present disclosure relates to a high voltage vacuum tube including: a vacuum tube envelope comprising an interior; an anode assembly disposed within the interior of the vacuum tube envelope; and a cathode assembly disposed within interior of the vacuum tube envelope that emits an electrode beam to strike a target surface of the anode assembly and form electromagnetic radiation. The high voltage vacuum tube includes a braze assembly, said braze assembly comprising a first component and a second component joined together by a first braze joint, said first braze joint comprising a composition including no more than 18.0 wt % in total of one of more precious metals selected from Au, Pd and Pt, where at least a portion of the braze joint is exposed to the interior of the vacuum tube envelope.
    Type: Grant
    Filed: May 16, 2024
    Date of Patent: April 22, 2025
    Assignee: MORGAN ADVANCED CERAMICS, INC.
    Inventors: Edgar Vanegas Hurtado, Nathan Russell Daubenmier, Thomas A. Sandin, Antonio Ramirez, Dharmendra Chalasani
  • Publication number: 20250118523
    Abstract: The present disclosure relates to a high voltage vacuum tube including: a vacuum tube envelope comprising an interior; an anode assembly disposed within the interior of the vacuum tube envelope; and a cathode assembly disposed within interior of the vacuum tube envelope that emits an electrode beam to strike a target surface of the anode assembly and form electromagnetic radiation. The high voltage vacuum tube includes a braze assembly, said braze assembly comprising a first component and a second component joined together by a first braze joint, said first braze joint comprising a composition including no more than 18.0 wt % in total of one of more precious metals selected from Au, Pd and Pt, where at least a portion of the braze joint is exposed to the interior of the vacuum tube envelope.
    Type: Application
    Filed: May 16, 2024
    Publication date: April 10, 2025
    Inventors: Edgar Vanegas HURTADO, Nathan Russell DAUBENMIER, Thomas A. SANDIN, Antonio RAMIREZ, Dharmendra CHALASANI
  • Publication number: 20250114878
    Abstract: The present invention relates to a braze alloy composition including in weight %: 80 to 97.98 Cu; 2.0?Ge?9.5; 0.02<B?1.25; and incidental impurities. The braze alloy composition includes no more than 0.4 wt % Sn.
    Type: Application
    Filed: May 16, 2024
    Publication date: April 10, 2025
    Inventors: Thomas A. SANDIN, Edgar Vanegas HURTADO, Nathan Russell DAUBENMIER, Antonio RAMIREZ, Dharmendra CHALASANI