Patents by Inventor Kyu T. Lee

Kyu T. 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).

  • 17-Substituted-6-desoxy-7,8-dihydro-6.alpha.-methylnoroxymorphone narcotic antagonists
    Patent number: 4322426
    Abstract: 17-Substituted-6-desoxy-7,8-dihydro-6.alpha.-methylnoroxymorphone compounds corresponding to the formula ##STR1## The compounds exhibit narcotic antagonistic properties.
    Type: Grant
    Filed: April 28, 1980
    Date of Patent: March 30, 1982
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Edward C. Hermann, Kyu T. Lee, Melvyn J. Myers
  • Antibacterials: 1-difluoromethyl-6,7-methylenedioxy-1,4-dihydro-4-oxo-3-quinolinecarboxy lic acid and its esters
    Patent number: 4284777
    Abstract: 1-Difluoromethyl-6,7-methylenedioxy-1,4-dihydro-4-oxo-3-quinolinecarboxylic acid and certain of its alkylaminoalkyl esters, useful in treating bacterial infections in mammals.
    Type: Grant
    Filed: February 14, 1980
    Date of Patent: August 18, 1981
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Kyu T. Lee
  • 1-Difluoromethyl-6,7-methylenedioxy-1,4-dihyd ro-4-oxo-3-quinolinecarboxylic acid
    Patent number: 4216324
    Abstract: 1-Difluoromethyl-6,7-methylenedioxy-1,4-dihydro-4-oxo-3-quinolinecarboxylic acid and certain of its alkylaminoalkyl esters, useful in treating bacterial infections in mammals.
    Type: Grant
    Filed: December 26, 1978
    Date of Patent: August 5, 1980
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Kyu T. Lee
  • Herbicidal pyridine, 1-oxides
    Patent number: 4201567
    Abstract: Pyridine, 1-oxides, particularly 4- or 5-substituted pyridine, 1-oxides such as 2-[(1,1,2,2-tetrafluoroethyl)sulfinyl]pyridine, 1-oxide exhibit selective pre-emergence control of weeds.
    Type: Grant
    Filed: January 19, 1979
    Date of Patent: May 6, 1980
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Kyu T. Lee
  • Antibacterials: 1-difluoromethyl-6,7-methylenedioxy-1,4-dihydro-4-oxo-3-quinolinecarboxy lic acid and its esters
    Patent number: 4147788
    Abstract: 1-Difluoromethyl-6,7-methylenedioxy-1,4-dihydro-4-oxo-3-quinolinecarboxylic acid and certain of its alkylaminoalkyl esters, useful in treating bacterial infections in mammals.
    Type: Grant
    Filed: January 14, 1977
    Date of Patent: April 3, 1979
    Assignee: E. I. DuPont de Nemours and Company
    Inventor: Kyu T. Lee
  • Quinolonecarboxylic acids for control of bacterial diseases in plants
    Patent number: 4146625
    Abstract: Quinolonecarboxylic acids, such as 6-fluoro-1,4-dihydro-8-methyl-4-oxo-1-(2,2,2-trifluoroethyl)-3-quinoloneca rboxylic acid, ethyl ester, useful for control of certain bacterial plant diseases, such as fire blight of apple, pear and soft rot of potato, and gall formation on herbaceous and woody plants.
    Type: Grant
    Filed: February 13, 1978
    Date of Patent: March 27, 1979
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Kyu T. Lee