Patents by Inventor Arthur William Coombs, III

Arthur William Coombs, III 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).

  • Thermal oxidation of single crystal aluminum antimonide and materials having the same
    Patent number: 8338916
    Abstract: In one embodiment, a method for forming a non-conductive crystalline oxide layer on an AlSb crystal includes heat treating an AlSb crystal in a partial vacuum atmosphere at a temperature conducive for air adsorbed molecules to desorb, surface molecule groups to decompose, and elemental Sb to evaporate from a surface of the AlSb crystal and exposing the AlSb crystal to an atmosphere comprising oxygen to form a crystalline oxide layer on the surface of the AlSb crystal. In another embodiment, a method for forming a non-conductive crystalline oxide layer on an AlSb crystal includes heat treating an AlSb crystal in a non-oxidizing atmosphere at a temperature conducive for decomposition of an amorphous oxidized surface layer and evaporation of elemental Sb from the AlSb crystal surface and forming stable oxides of Al and Sb from residual surface oxygen to form a crystalline oxide layer on the surface of the AlSb crystal.
    Type: Grant
    Filed: December 22, 2010
    Date of Patent: December 25, 2012
    Assignee: Lawrence Livermore National Security, LLC
    Inventors: John William Sherohman, Jick Hong Yee, Arthur William Coombs, III, Kuang Jen J. Wu
  • THERMAL OXIDATION OF SINGLE CRYSTAL ALUMINUM ANTIMONIDE AND MATERIALS HAVING THE SAME
    Publication number: 20120161288
    Abstract: In one embodiment, a method for forming a non-conductive crystalline oxide layer on an AlSb crystal includes heat treating an AlSb crystal in a partial vacuum atmosphere at a temperature conducive for air adsorbed molecules to desorb, surface molecule groups to decompose, and elemental Sb to evaporate from a surface of the AlSb crystal and exposing the AlSb crystal to an atmosphere comprising oxygen to form a crystalline oxide layer on the surface of the AlSb crystal. In another embodiment, a method for forming a non-conductive crystalline oxide layer on an AlSb crystal includes heat treating an AlSb crystal in a non-oxidizing atmosphere at a temperature conducive for decomposition of an amorphous oxidized surface layer and evaporation of elemental Sb from the AlSb crystal surface and forming stable oxides of Al and Sb from residual surface oxygen to form a crystalline oxide layer on the surface of the AlSb crystal.
    Type: Application
    Filed: December 22, 2010
    Publication date: June 28, 2012
    Applicant: Lawrence Livermore National Security, LLC
    Inventors: John William Sherohman, Jick Hong Yee, Arthur William Coombs, III, Kuang Jen J. Wu