Patents by Inventor David Norman Hardern

David Norman Hardern 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).

  • Pharmaceutical compositions containing 4-carboxy-flavones
    Patent number: 4042708
    Abstract: There are provided processes for preparing compounds of the formula: ##STR1## (wherein R.sup.1, R.sup.2, R.sup.3 and R.sup.4, which may be the same or different, each represent hydrogen, hydroxy, alkenyl, alkanoyl or alkyl, andX represents a hydrocarbon chain containing from 2 to 10 carbon atoms, optionally substituted by a hydroxy group) and pharmaceutically acceptable derivatives thereof, and pharmaceutical compositions containing them.The compounds are antagonists of the slow reacting substance of anaphylaxis.
    Type: Grant
    Filed: January 14, 1976
    Date of Patent: August 16, 1977
    Assignee: Fisons Limited
    Inventors: Thomas Brian Lee, David Norman Hardern, John Raymond Bantick
  • 4'-Carboxy-flavone
    Patent number: 3948955
    Abstract: There are provided compounds of the formula: ##SPC1##(wherein R.sup.1, R.sup.2, R.sup.3 and R.sup.4, which may be the same or different, each represent hydrogen, hydroxy, alkenyl, alkanoyl or alkyl, andX represents a hydrocarbon chain containing from 2 to 10 carbon atoms, optionally substituted by a hydroxy group) and pharmaceutically acceptable derivatives thereof.The compounds are antagonists of the slow reacting substance of anaphylaxis.
    Type: Grant
    Filed: November 11, 1974
    Date of Patent: April 6, 1976
    Assignee: Fisons Limited
    Inventors: Thomas Brian Lee, David Norman Hardern, John Raymond Bantick