US Patent Issued to Hexatech on Nov. 3 for "Single crystalline aluminum nitride substrate and optoelectronic devices made therefrom" (North Carolina Inventors)

ALEXANDRIA, Va., Nov. 3 -- United States Patent no. 12,781,386, issued on Nov. 3, was assigned to Hexatech Inc. (Morrisville, N.C.).

"Single crystalline aluminum nitride substrate and optoelectronic devices made therefrom" was invented by Rafael Dalmau (Raleigh, N.C.), Raoul Schlesser (Raleigh, N.C.), Samuel Kirby (Raleigh, N.C.) and Jeffrey Britt (Henderson, N.C.).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure provides a method for forming an aluminum nitride single crystalline substrate that includes growing an AlN single crystalline boule followed by cooling the AlN single crystalline boule in three phases including a first cooling phase from the crystal growth temperature to a first...