Patents by Inventor Myoung Ki Lee

Myoung Ki Lee 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: 20090039054
    Abstract: An etching apparatus of a glass substrate for a flat panel display includes an etching chamber configured to receive a jig, glass substrates disposed on the jig, a holding member connected to the jig to hold the glass substrates, a transferring line connected to the jig to transfer the jig into the etching chamber, and a spray member which sprays an etchant onto surfaces of the glass substrates. A spray pressure of the etchant is equal to or greater than approximately 0.1 kg/cm2 and is less than approximately 0.5 kg/cm2.
    Type: Application
    Filed: April 10, 2008
    Publication date: February 12, 2009
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Ho-Geun CHOI, Yong-Woo KIM, Myoung-Ki LEE, Pal-Kon KIM
  • Publication number: 20040062862
    Abstract: Provided are an apparatus and method using large-area organic vapor phase deposition for formation of organic thin films and organic devices. The apparatus includes a deposition part and a source part. The deposition part includes a process chamber; a substrate holder installed in the process chamber for supporting a loaded substrate; a substrate temperature controller installed in the substrate holder for controlling the temperature of the substrate; and a shower head installed opposite the substrate holder in the process chamber for uniformly distributing onto the substrate organic source vapors to be used for a deposition reaction.
    Type: Application
    Filed: September 26, 2003
    Publication date: April 1, 2004
    Inventors: Seong Deok Ahn, Yong Eui Lee, Seung Youl Kang, Kyung Soo Suh, Mi Kyung Kim, Meyoung Ju Joung, Chul Am Kim, Myoung Ki Lee, Young Kyoo Jee
  • Patent number: 6384212
    Abstract: The present invention relates to a new, simple, and easy process for preparing cephalosporin antibiotics of the following formula (I), such as ceftazidime and cefixime. The process comprises acylating a 7-amino cephalosporanic acid derivative of the following formula (III) with a crystalline aminothiazole compound of the following formula (II): wherein R1 and R2 are the same or different and independently represent H, a C1-4 alkyl or C3-5 cycloalkyl group, R4 represents acetoxymethyl, methylpyridine, or vinyl, X represents chlorine or bromine, and the acid in the acid addition salt represents an inorganic acid, such as hydrochloric acid, or an organic acid, such as formic acid or acetic acid.
    Type: Grant
    Filed: May 4, 2000
    Date of Patent: May 7, 2002
    Assignee: Hanmi Fine Chemicals Co., Ltd.
    Inventors: Dae-chul Yoon, Seung Won Yoo, Dong Gyun Shin, Myoung Ki Lee, Mi Soon Park, Yoon Seok Lee, Yoon Seok Song, Ju Cheol Lee, Sang Mi Oh
  • Publication number: 20020016457
    Abstract: The present invention relates to a new, simple, and easy process for preparing cephalosporin antibiotics of the following sub-formulas (I), such as cefixime.
    Type: Application
    Filed: September 21, 2001
    Publication date: February 7, 2002
    Inventors: Dae-Chul Yoon, Seung-Won Yoo, Dong-Gyun Shin, Myoung-Ki Lee, Mi-Soon Park, Yoon-Seok Lee, Yoon-Seok Song, Ju-Cheol Lee, Sang-Mi Oh
  • Patent number: 6277996
    Abstract: The present invention relates to a new crystalline aminothiazole derivative represented by the following formula (I) which is very useful for the preparation of cephalosporin antibiotics, including ceftazidime and cefixime, etc: wherein R1 and R2 are the same or different and independently represent H, an alkyl group of 1 to 4 carbon atoms, or a cycloalkyl group of 3 to 5 carbon atoms, X represents chlorine or bromine, and the acid in the acid addition salt represents an inorganic acid, such as hydrochloric acid, hydrobromic acid, sulfuric acid, or perchloric acid, or an organic acid, such as formic acid, acetic acid, trifluoroacetic acid, propionic acid, methanesulfonic acid, or benzenesulfonic acid.
    Type: Grant
    Filed: May 4, 2000
    Date of Patent: August 21, 2001
    Assignee: Hanmi Fine Chemicals Co., Ltd.
    Inventors: Dae-chul Yoon, Seung-won Yoo, Dong Gyun Shin, Myoung Ki Lee, Mi Soon Park, Yoon Seok Lee, Yoon Seok Song