Patents by Inventor Ku Won Seo

Ku Won Seo 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).

  • Gamma ray-sensitive phthalocyanine compound of poly cross-linking type and ink composition comprising the same
    Patent number: 7981208
    Abstract: The present invention relates to phthalocyanine compound of poly cross-linking type which is represented with the below formula 1 and is useful for preventing forgery and alternation due to a rapid velocity being responded to a gamma ray of Neutron, and an ink composition comprising it. wherein, M1 and M2 are any one selected from a group consisted of a metal, a metal oxide or a metal halide respectively and may be same or different, R is a hydrogen atom, a halogen atom, a hydroxyl group, an amino group, a hydroxysulfonyl group, an aminosulfonyl group, or an alky group having a substituent group having from 1 to 20 carbon atoms, and n is an integer of 0˜3.
    Type: Grant
    Filed: April 30, 2008
    Date of Patent: July 19, 2011
    Assignees: Nanocms Co., Ltd., Korea Minting and Security Printing Corp.
    Inventors: Shi Surk Kim, Kyung Mi Lee, Ku Won Seo, Sang Geun Lee, Won Gyun Choe, Sun Hong Yoon, Soo Dong Kim
  • Gamma Ray-sensitive Phthalocyanine Compound of Poly Cross-linking Type and Ink Composition Comprising The Same
    Publication number: 20090326207
    Abstract: The present invention relates to phthalocyanine compound of poly cross-linking type which is represented with the below formula 1 and is useful for preventing forgery and alternation due to a rapid velocity being responded to a gamma ray of Neutron, and an ink composition comprising it. wherein, M1 and M2 are any one selected from a group consisted of a metal, a metal oxide or a metal halide respectively and may be same or different, R is a hydrogen atom, a halogen atom, a hydroxyl group, an amino group, a hydroxysulfonyl group, an aminosulfonyl group, or an alky group having a substituent group having from 1 to 20 carbon atoms, and n is an integer of 0˜3.
    Type: Application
    Filed: April 30, 2008
    Publication date: December 31, 2009
    Applicants: CMS Technology Inc., Korea Minting And Security Printing Corp.
    Inventors: Si-Seok Kim, Kyung Mi Lee, Ku Won Seo, Sang Geun Lee, Won Gyun Choe, Sun Hong Yoon, Soo Dong Kim
  • Functional Fiber for Preventing Forgery
    Publication number: 20090311527
    Abstract: The present invention relates to a functional fiber for preventing forgery, more particularly functional fiber for preventing forgery which exerts functionality by mixing special pigments to composite fibers of side by side shape on which two components are attached. The functional fibers of two components structure according to the present invention are consisted of synthetic high molecules, and have functionality which fibers display color by colored pigments with visual or fluorescence by light of ultraviolet ray or absorbing property of infrared pigments by being produced by mixing colored pigments, fluorescent pigments, infrared pigments and the like to each resin, and then melt-spinning the said mixture, or post treating it.
    Type: Application
    Filed: June 22, 2009
    Publication date: December 17, 2009
    Applicant: Korea Minting and Security Printing Corp.
    Inventors: Ku Won Seo, Won Gyun Choe, Sun Young Kim, Soo Dong Kim, Hong Sub Choi, Sang Geun Lee, Sun Hong Yoon