Patents by Inventor Jin H. Cho

Jin H. Cho 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: 5635987
    Abstract: A teletext information displaying method and the apparatus therefor for a wide-screen television receiver by which both the list and the contents of received teletext pages are displayed on a 16.times.9 A.R. screen, so that a user can easily find desired teletext information without the necessity of individually entering page data for page search. According to the present method and apparatus, teletext page data being received is stored in a first memory, and the list of the stored pages is created and stored in a second memory. The page list and the contents thereof are selectively displayed on a 4.times.3 A.R. region and a remainder region of the 16.times.9 A.R. screen. Also, when the channel is selected, information on the teletext pages having been received and stored and the teletext type are displayed for a predetermined time with a television picture, thereby providing convenience in use.
    Type: Grant
    Filed: June 25, 1996
    Date of Patent: June 3, 1997
    Assignee: Goldstar Co., Ltd.
    Inventors: Man H. Park, Jin H. Cho, Sung Y. Meng
  • Patent number: 5521146
    Abstract: The invention relates to novel herbicidal compounds and compositions. The compounds of the invention are highly substituted derivatives of pyrimidine.
    Type: Grant
    Filed: November 10, 1994
    Date of Patent: May 28, 1996
    Assignee: Lucky Ltd.
    Inventors: Chang U. Hur, Jin H. Cho, Su M. Hong, Hong W. Kim, Young H. Lim, Jae S. Rim, Jeong S. Kim, Sang H. Chae
  • Patent number: 5494888
    Abstract: The present invention relates to 6-chloro-2-(4,6-dimethoxypyrimidin-2-yl)oxybenzoic acid iminoester derivative of the general formula I; process of their preparation and a method for their application as herbicides: ##STR1## wherein R and Q are as defined in the specification.
    Type: Grant
    Filed: January 26, 1994
    Date of Patent: February 27, 1996
    Assignee: Lucky Ltd.
    Inventors: Chang U. Hur, Jin H. Cho, Ho S. Lee, Sang K. Yoo, Su M. Hong, Hong W. Kim, Jae S. Rim, Yeong T. Bae, Sang H. Chae, Jeong S. Kim, Byoung B. Lee, Hun S. Oh, Woo B. Choi
  • Patent number: 5468896
    Abstract: The present invention relates to a process for preparation of 5-pyrazolemercaptan derivatives represented by the following general formula (I), which is useful for synthesis of sulfonylurea-based herbicides, and an intermediate thereof, ##STR1## wherein R.sup.1 represents hydrogen, C.sub.1 -C.sub.4 alkyl, allyl or propargyl,R.sup.2 represents hydrogen, C.sub.1 -C.sub.4 alkyl, or a phenyl group which can contain one or more substituent selected from the group consisting of halogen, nitro and methyl at an optional position, andR.sup.3 represents hydrogen, methyl, ethyl or phenyl.
    Type: Grant
    Filed: February 10, 1995
    Date of Patent: November 21, 1995
    Assignee: Lucky Ltd.
    Inventors: Jong K. Choi, In B. Jhung, Jae C. Lee, Jong S. Sa, Sung J. Jo, Jin H. Cho
  • Patent number: 5466854
    Abstract: The present invention relates to a process for preparation of 5-pyrazolemercaptan derivatives represented by the following general formula (I), which is useful for synthesis of sulfonylurea-based herbicides, and an intermediate thereof, ##STR1## wherein R.sup.1 represents hydrogen, C.sub.1 -C.sub.4 alkyl, allyl or propargyl,R.sup.2 represents hydrogen, C.sub.1 -C.sub.4 alkyl, or a phenyl group which can contain one or more substituent selected from the group consisting of halogen, nitro and methyl at an optional position, andR.sup.3 represents hydrogen, methyl, ethyl or phenyl.
    Type: Grant
    Filed: February 10, 1995
    Date of Patent: November 14, 1995
    Assignee: Lucky Ltd.
    Inventors: Jong K. Choi, In B. Jhung, Jae C. Lee, Jong S. Sa, Sung J. Jo, Jin H. Cho
  • Patent number: 5416220
    Abstract: The present invention relates to a process for preparation of 5-pyrazolemercaptan derivatives represented by the following general formula (I), which is useful for synthesis of sulfonylurea-based herbicides, and an intermediate thereof, ##STR1## wherein R.sup.1 represents hydrogen, C.sub.1 -C.sub.4 alkyl, allyl or propargyl,R.sup.2 represents hydrogen, C.sub.1 -C.sub.4 alkyl, or a phenyl group which can contain one or more substituent selected from the group consisting of halogen, nitro and methyl at an optional position, andR.sup.3 represents hydrogen, methyl, ethyl or phenyl.
    Type: Grant
    Filed: November 15, 1994
    Date of Patent: May 16, 1995
    Assignee: Lucky, Ltd.
    Inventors: Jong K. Choi, In B. Jhung, Jae C. Lee, Jong S. Sa, Sung J. Jo, Jin H. Cho
  • Patent number: 5405965
    Abstract: The present invention relates to a process for preparation of 5-pyrazolemercaptan derivatives represented by the following general formula (I), which is useful for synthesis of sulfonyl-urea-based herbicides, and an intermediate thereof, ##STR1## wherein R.sup.1 represents hydrogen, C.sub.1 -C.sub.4 alkyl, allyl or propargyl,R.sup.2 represents hydrogen, C.sub.1 -C.sub.4 alkyl, or a phenyl group which can contain one or more substituent selected from the group consisting of halogen, nitro and methyl at an optional position, andR.sup.3 represents hydrogen, methyl, ethyl or phenyl.
    Type: Grant
    Filed: December 15, 1993
    Date of Patent: April 11, 1995
    Assignee: Lucky Ltd.
    Inventors: Jong K. Choi, In B. Jhung, Jae C. Lee, Jong S. Sa, Sung J. Jo, Jin H. Cho