ALEXANDRIA, Va., March 26 -- United States Patent no. 12,258,322, issued on March 25, was assigned to AGENCY FOR DEFENSE DEVELOPMENT (Daejeon, South Korea).

"Methods for preparing dihydroxyammonium 5,5'-bistetrazole-1,1'diolate" was invented by Kuk Tae Kwon (Daejon, South Korea), Hae Wook Yoo (Daejon, South Korea), Seung Hee Kim (Daejon, South Korea) and So Jung Lee (Daejon, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to a method for preparing dihydroxyammonium 5,5'-bistetrazole-1,1'-diolate. The method for preparing dihydroxyammonium 5,5'-bistetrazole-1,1'-diolate, according to one embodiment of the present invention, comprises the steps of: synthesizing 5,5'-bis...