Patents by Inventor Sung Tak Oh

Sung Tak Oh 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).

  • Patent number: 11132389
    Abstract: Provided are a method and an apparatus for generating a keyword. The method for generating a keyword in a target document includes: extracting primitive single words from the target document; generating a candidate keyword by a combination of the primitive single words; calculating cohesion score between a first word and a second word included in the candidate keyword; calculating a context score of the first word and the second word based on similarity between two contexts by determining a periphery of a word where the first word and the second word simultaneously occur in a neighboring document as one context and determining the target document as a remaining one context; and selecting a final keyword based on the cohesion score between the first word and the second word and the context score of the first word and the second word.
    Type: Grant
    Filed: March 16, 2016
    Date of Patent: September 28, 2021
    Assignee: Research & Business Foundation Sungkyunkwan University
    Inventors: Tae Min Cho, Jee Hyong Lee, Noo Ri Kim, Sung Tak Oh, Jae Dong Lee, Hye Woo Lee
  • Publication number: 20160275083
    Abstract: Provided are a method and an apparatus for generating a keyword. The method for generating a keyword in a target document includes: extracting primitive single words from the target document; generating a candidate keyword by a combination of the primitive single words; calculating cohesion score between a first word and a second word included in the candidate keyword; calculating a context score of the first word and the second word based on similarity between two contexts by determining a periphery of a word where the first word and the second word simultaneously occur in a neighboring document as one context and determining the target document as a remaining one context; and selecting a final keyword based on the cohesion score between the first word and the second word and the context score of the first word and the second word.
    Type: Application
    Filed: March 16, 2016
    Publication date: September 22, 2016
    Applicant: RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY
    Inventors: Tae Min CHO, Jee Hyong LEE, Noo Ri KIM, Sung Tak OH, Jae Dong LEE, Hye Woo LEE
  • Patent number: 6559320
    Abstract: The present invention relates to a novel process for preparing pyrrole ester compounds, which are key intermediates in the preparation of farnesyl transferase inhibitors, an anti-cancer agent Horner-Emmons reaction of aldehyde compounds provides the corresponding &agr;,&bgr;-unsaturated esters, which without any separation and/or purification steps, are treated with toluenesutfonyl-methylisocyanate in the presence of base to give pyrrole esters in one-pot fashion.
    Type: Grant
    Filed: August 22, 2002
    Date of Patent: May 6, 2003
    Assignee: LG Chem Investment Ltd.
    Inventors: Hyun Ik Shin, Sung Tak Oh, Jay Hyok Chang, Kyoo Woong Lee
  • Publication number: 20030069432
    Abstract: The present invention relates to a novel process for preparing pyrrole ester compounds, which are key intermediates in the preparation of farnesyl transferase inhibitors, an anti-cancer agent. Horner-Emmons reaction of aldehyde compounds provides the corresponding &agr;,&bgr;-unsaturated esters, which without any separation and/or purification steps, are treated with toluenesulfonylmethylisocyanate in the presence of base to give pyrrole esters in one-pot fashion.
    Type: Application
    Filed: August 22, 2002
    Publication date: April 10, 2003
    Inventors: Hyun Ik Shin, Sung Tak Oh, Jay Hyok Chang, Kyoo Woong Lee