Patents by Inventor Hae Wook Yoo

Hae Wook Yoo 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).

  • Methods for preparing dihydroxyammonium 5,5?-bistetrazole-1,1?diolate
    Patent number: 12258322
    Abstract: 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?-bistetrazole-1,1?-diol dihydrate (1,1?-BTO) from ditetrahydropyranyl diazidoglyoxime (THP-DAG) by using a hydrochloric acid (HCl) solution in a first solvent; and reacting 1,1?-BTO with an amine solution so as to neutralize same and, simultaneously, obtaining dihydroxylammonium 5,5?-bistetrazole-1,1?-diolate (Thomas Klapotke explosive-50, TKX-50).
    Type: Grant
    Filed: June 1, 2023
    Date of Patent: March 25, 2025
    Assignee: AGENCY FOR DEFENSE DEVELOPMENT
    Inventors: Kuk Tae Kwon, Hae Wook Yoo, Seung Hee Kim, So Jung Lee
  • METHODS FOR PREPARING DIHYDROXYAMMONIUM 5,5'-BISTETRAZOLE-1,1'DIOLATE
    Publication number: 20240425466
    Abstract: 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?-bistetrazole-1,1?-diol dihydrate (1,1?-BTO) from ditetrahydropyranyl diazidoglyoxime (THP-DAG) by using a hydrochloric acid (HCl) solution in a first solvent; and reacting 1,1?-BTO with an amine solution so as to neutralize same and, simultaneously, obtaining dihydroxylammonium 5,5?-bistetrazole-1,1?-diolate (Thomas Klapotke explosive-50, TKX-50).
    Type: Application
    Filed: June 1, 2023
    Publication date: December 26, 2024
    Inventors: Kuk Tae Kwon, Hae Wook Yoo, Seung Hee Kim, So Jung Lee