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:
Feb. 17, 2009
Filed:
Mar. 21, 2006
Fu-su Yen, Tainan, TW;
Rung-je Yang, Kaohsiung County, TW;
Fu-Su Yen, Tainan, TW;
Rung-Je Yang, Kaohsiung County, TW;
National Cheng Kung University, Tainan, TW;
Abstract
A method for producing nano-scale theta (θ)-phase alumina microparticles is disclosed. The nano-scale θ-phase alumina microparticles are uniform in particle size and highly phase-pure. They are obtained by controlling the ratio of boehmite mixed with the θ-phase alumina initial powders, followed by at least one phase transformation. Therefore, the nano-scale θ-phase alumina microparticles produced by the present method have more uniform particle size and highly purer phase. As such for the production of nano-scale θ-phase alumina microparticles, the present method saves more process time and cost, and it provides an advantage such as the clean production.