Patents by Inventor David S. Duch

David S. Duch 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).

  • Treatment with dialkoxy pyridopyrimidines
    Patent number: 4897395
    Abstract: Potent antiproliferative activity in combination with low inhibition of histamine N-methyltransferase has been found in a class of 2,4-diamino-6-(2,5-dialkoxybenzyl)-5-methylpyrido[2,3-d]pyrimidines.
    Type: Grant
    Filed: November 30, 1987
    Date of Patent: January 30, 1990
    Assignee: Burroughs Wellcome Co.
    Inventors: David S. Duch, Charles A. Nichol, Carl W. Sigel
  • Treatment with dialkoxy pyridopyrimidines
    Patent number: 4661490
    Abstract: Potent antiproliferative activity in combination with low inhibition of histamine N-methyltransferase has been found in a class of 2,4-diamino-6-(2,5-dialkoxybenzyl)-5-methylpyrido[2,3-d]pyrimidines.
    Type: Grant
    Filed: March 19, 1984
    Date of Patent: April 28, 1987
    Assignee: Burroughs Wellcome Co.
    Inventors: David S. Duch, Charles A. Nichol, Carl W. Sigel
  • Treatment with dialkoxy pyridopyrimidine compounds
    Patent number: 4512992
    Abstract: This application is directed to treatment of psoriasis with a pyrido pyrimidine compound such as 2,4-diamino-6-(3,4-dimethoxybenzyl)-5-methylpyrido[2,3-d]pyrimidine.
    Type: Grant
    Filed: February 6, 1981
    Date of Patent: April 23, 1985
    Assignee: Burroughs Wellcome Co.
    Inventors: David S. Duch, Charles A. Nichol, Carl W. Sigel
  • Treatment with dialkoxy pyridopyrimidines
    Patent number: 4372957
    Abstract: Potent psoriasis activity in combination with low inhibition of histamine N-methyltransferase has been found in a class of 2,4-diamino-6-(2,5-dialkoxybenzyl)-5-methylpyrido[2,3-d]pyrimidines.
    Type: Grant
    Filed: January 23, 1981
    Date of Patent: February 8, 1983
    Assignee: Burroughs Wellcome Co.
    Inventors: David S. Duch, Charles A. Nichol, Carl W. Sigel