The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 01, 2019
Filed:
Mar. 07, 2019
Lg Chem, Ltd., Seoul, KR;
Han Nah Jeong, Daejeon, KR;
Donghwan Kim, Daejeon, KR;
Shin Hee Jun, Daejeon, KR;
Myounghwan Oh, Daejeon, KR;
Haejong Jung, Daejeon, KR;
Sang Hun Cheong, Daejeon, KR;
LG Chem, Ltd., , KR;
Abstract
The present invention provides method for producing a spherical aluminum nitride powder. In an embodiment, the method comprises mixing an Al precursor and a flux in a solvent to produce a mixed solution, spray-drying the mixed solution to form a spray-dried powder, mixing the spray-dried powder and a carbon-based material to form a mixture, heat treating the mixture in a nitrogen atmosphere to form a heat-treated compound, and decarbonizing the heat-treated compound in an air atmosphere, wherein the flux is at least one selected from the group consisting of CuO, TiO, BiO, and CuO, or a mixture of at least one selected from the group consisting of CuO, TiO, BiO, and CuO and at least one selected from the group consisting of CaFand YO.