Patents by Inventor Hae Chang

Hae Chang 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).

  • Publication number: 20060244381
    Abstract: A plasma display panel is disclosed. The plasma display panel having an additional thin layer between each electrode and a glass substrate in an electrode pad region minimizes migration of the electrode which results from a potential difference between the electrodes while the PDP is driven.
    Type: Application
    Filed: May 19, 2004
    Publication date: November 2, 2006
    Inventors: Seak Kim, Hae Chang, Kwang Choi
  • Publication number: 20050261499
    Abstract: The present invention relates to a method for preparing optically active (R)-aryloxypropionic acid ester derivatives, and more particularly to a method for preparing (R)-aryloxypropionic acid ester derivatives with high optical purity and good yield at low cost from phenol derivatives with various substituted functional groups and (S)-alkyl O-arylsulfonyl lactates.
    Type: Application
    Filed: June 25, 2003
    Publication date: November 24, 2005
    Inventors: Dae Kim, Kun Chung, Hae Chang, Young Ko, Jae Ryu, Jae Woo, Dong Koo
  • Publication number: 20050043180
    Abstract: The present invention relates to optically active herbicidal (R)-phenoxypropionic acid N-methyl-N-2-fluorophenyl amide compounds represented in the following formula (1), a method for preparing thereof, their use to prevent generation of barnyard grass produced from rice and composition as suitable herbicides, (I) wherein X is hydrogen, halogen, hydroxy, NH2, CO2H, C1-C6 alkylamino substituted with 1 or 2 of C1-C3 alkyl, C1-C6 alkyl, C1-C6 alkoxy, C1-C3 haloalkyl, C1-C3 haloalkoxy, C2-C4 alkoxyalkoxy, C1-C4 alkylthonyl, C1-C4 alkylsulfonyl, C2-C6 alkenyl, C2-C6 alkinyl, C2-C6 alkenyloxy, C2-C6 alkinyloxy, C1-C3 alkoxycarbonyl, or C1-C3 alkylcarbonyl; is hydrogen or fluoro; and n is an integer of 0 to 2, wherein X can be a combination of other substituents when n is 2.
    Type: Application
    Filed: November 1, 2001
    Publication date: February 24, 2005
    Inventors: Dae Kim, Hae Chang, Young Ko, Jae Ryu, Jae Woo, Dong Koo, Jin Kim, Bong-Jin Chung, Oh-Yeon Kwon