Patents by Inventor Jesse A. Johnson, II

Jesse A. Johnson, II 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: 20250051964
    Abstract: A high-throughput method for identifying single crystal hexagonal-SiC off-axis surfaces that support surface chemistries and kinetics to selectively produce various epitaxial growth modes of the metastable 3C-SiC polytype is provided. In execution of the aforementioned method, the present invention also encompasses the use of a single crystal hexagonal-SiC domed substrate, and a method for manufacturing thereof. Said method for screening silicon carbide growth surfaces is comprised of: fabrication of a silicon carbide domed substrate; forming a step-terrace growth surface on the domed surface of said silicon carbide domed substrate by hydrogen etching; performing silicon carbide deposition upon said growth surface, thereby creating an silicon carbide epitaxial domed wafer; and characterization of said silicon carbide epitaxial domed wafer. Silicon carbide deposition upon a silicon carbide domed growth surface allows for the modulation of the supersaturation ratio under a single set of growth conditions.
    Type: Application
    Filed: October 24, 2024
    Publication date: February 13, 2025
    Applicant: Mainstream Engineering Corporation
    Inventors: Jesse A. Johnson, II, Brian P. Tucker, Adam J. Duzik, Justin J. Hill
  • Patent number: 12173428
    Abstract: A high-throughput method for identifying single crystal hexagonal-SiC off-axis surfaces that support surface chemistries and kinetics to selectively produce various epitaxial growth modes of the metastable 3C-SiC polytype is provided. In execution of the aforementioned method, the present invention also encompasses the use of a single crystal hexagonal-SiC domed substrate, and a method for manufacturing thereof. Said method for screening silicon carbide growth surfaces is comprised of: fabrication of a silicon carbide domed substrate; forming a step-terrace growth surface on the domed surface of said silicon carbide domed substrate by hydrogen etching; performing silicon carbide deposition upon said growth surface, thereby creating an silicon carbide epitaxial domed wafer; and characterization of said silicon carbide epitaxial domed wafer. Silicon carbide deposition upon a silicon carbide domed growth surface allows for the modulation of the supersaturation ratio under a single set of growth conditions.
    Type: Grant
    Filed: October 7, 2022
    Date of Patent: December 24, 2024
    Assignee: Mainstream Engineering Corporation
    Inventors: Jesse A. Johnson, II, Brian P. Tucker, Adam J. Duzik, Justin J. Hill
  • Publication number: 20240133077
    Abstract: A high-throughput method for identifying single crystal hexagonal-SiC off-axis surfaces that support surface chemistries and kinetics to selectively produce various epitaxial growth modes of the metastable 3C-SiC polytype is provided. In execution of the aforementioned method, the present invention also encompasses the use of a single crystal hexagonal-SiC domed substrate, and a method for manufacturing thereof. Said method for screening silicon carbide growth surfaces is comprised of: fabrication of a silicon carbide domed substrate; forming a step-terrace growth surface on the domed surface of said silicon carbide domed substrate by hydrogen etching; performing silicon carbide deposition upon said growth surface, thereby creating an silicon carbide epitaxial domed wafer; and characterization of said silicon carbide epitaxial domed wafer. Silicon carbide deposition upon a silicon carbide domed growth surface allows for the modulation of the supersaturation ratio under a single set of growth conditions.
    Type: Application
    Filed: October 7, 2022
    Publication date: April 25, 2024
    Applicant: Mainstream Engineering Corporation
    Inventors: Jesse A. Johnson, II, Brian P. Tucker, Adam J. Duzik, Justin J. Hill