Patents by Inventor Guang Jin

Guang Jin 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).

  • Pyrrolopyrimidinone derivatives, process of preparation and use
    Publication number: 20030171361
    Abstract: The invention relates to a series of pyrrolopyrimidinone derivatives of the formula (1), processes for their preparation, intermediates in their preparation, their use as therapeutic agents, and pharmaceutical compositions containing them.
    Type: Application
    Filed: December 2, 2002
    Publication date: September 11, 2003
    Inventors: Dae-Kee Kim, Ju Young Lee, Do Hyun Ryu, Nam Kyu Lee, Suk Ho Lee, Nam-Ho Kim, Jae-Sun Kim, Je Ho Ryu, Jin-Young Choi, Guang-Jin Im, Won-Son Choi, Tae Kon Kim, Hoon Cha
  • Process for preparing crystalline barium titanate powder
    Patent number: 6409983
    Abstract: The present invention provides a process of preparing barium titanate powders having fine particle morphology and superior crystallinity, by preparing a sol precursor by using a titanium acylate and a barium compound, spraying the sol precursor in a strong alkaline solution for coprecipitation, crystallizing the barium titanate with an optional hydrothermal reaction, and purifying the barium titanate powder by washing.
    Type: Grant
    Filed: July 11, 2000
    Date of Patent: June 25, 2002
    Assignee: Korea Institute of Science and Technology
    Inventors: Guang Jin Choi, Kyungja Woo, Young Sang Cho, Sang Jun Sim, Young Dae Kim, Sang Kyun Lee