Patents Assigned to JPS Micro-Tech Co., Ltd.
  • Patent number: 8052957
    Abstract: The present disclosure suggests a method of manufacturing flake aluminum oxide using a microwave including: performing a pre-treatment on a starting material by grinding the starting material such as alumina hydrate, aluminum salt or the like and classifying particles with an appropriate size; manufacturing transition alumina by performing a heat treatment by means of heating the pre-treated starting material; mixing the transition alumina with molten salt and an additive and then dispersing and grinding the mixed compounds; melting and synthesizing flake aluminum oxide by heating the dispersed and grinded mixture with a microwave as a heating source; separating the molten salt and the additive from the synthesized aluminum oxide; and performing a post-treatment on the flake aluminum oxide by removing a foreign substance such as an additive residue stuck to a surface of a crystal particle of the separated flake aluminum oxide.
    Type: Grant
    Filed: August 28, 2008
    Date of Patent: November 8, 2011
    Assignees: JPS Micro-Tech Co., Ltd.
    Inventors: Geum Seok Seo, Hui Chan Bak, Seong Soo Park, Sang Geun Lee, Kyeong Doo Ryou, Tae Gun Kim, Jin Sik Yoon
  • Publication number: 20110052485
    Abstract: The present disclosure suggests a method of manufacturing flake aluminum oxide using a microwave including: performing a pre-treatment on a starting material by grinding the starting material such as alumina hydrate, aluminum salt or the like and classifying particles with an appropriate size; manufacturing transition alumina by performing a heat treatment by means of heating the pre-treated starting material; mixing the transition alumina with molten salt and an additive and then dispersing and grinding the mixed compounds; melting and synthesizing flake aluminum oxide by heating the dispersed and grinded mixture with a microwave as a heating source; separating the molten salt and the additive from the synthesized aluminum oxide; and performing a post-treatment on the flake aluminum oxide by removing a foreign substance such as an additive residue stuck to a surface of a crystal particle of the separated flake aluminum oxide.
    Type: Application
    Filed: August 28, 2008
    Publication date: March 3, 2011
    Applicants: JPS MICRO-TECH CO., LTD, Geum Seok Seo
    Inventors: Geum Seok Seo, Hui Chan Bak, Seong Soo Park, Sang Geun Lee, Kyeong Doo Ryou, Tae Gun Kim, Jin Sik Yoon