Patents by Inventor David Lord Pain

David Lord Pain 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).

  • Azapurinones
    Patent number: 4052390
    Abstract: 8-Azapurin-6-ones substituted in the 2-position by a phenyl group carrying in a meta-position a sulphamoyl substituent, and also a hydroxy, alkoxy or alkylthio substituent para with respect to the said sulphamoyl grouping, and pharmaceutically acceptable salts thereof, possess pharmacological properties useful in the treatment of allergic respiratory disorders, for example allergic bronchial asthma.
    Type: Grant
    Filed: May 6, 1975
    Date of Patent: October 4, 1977
    Assignee: May & Baker Limited
    Inventors: Barbara Joyce Broughton, Bryan John Large, Stuart Malcolm Marshall, David Lord Pain, Kenneth Robert Harry Wooldridge
  • Azapurinones
    Patent number: 4039544
    Abstract: The invention provides certain novel 8-azapurin-6-one derivatives substituted in the 2-position by a substituted phenyl group, preferably carrying an alkoxy in the 2-position, which possess valuable pharmacological properties especially in the treatment of respiratory disorders manifested by the interaction of tissue-fixed antibodies with specific antigens.
    Type: Grant
    Filed: April 26, 1976
    Date of Patent: August 2, 1977
    Assignee: May & Baker Limited
    Inventors: Barbara Joyce Broughton, Bryan John Large, Stuart Malcolm Marshall, David Lord Pain, Kenneth Robert Harry Wooldridge
  • Pharmaceutical compositions comprising azapurinones useful in treating allergic respiratory disorders
    Patent number: 3987160
    Abstract: 8-Azapurin-6-ones substituted in the 2-position by an unsubstituted or substituted phenyl or naphthyl group, or by an alkenyl or alkynyl group, a cycloalkyl group, an alkyl group contaning 2 to 10 carbon atoms, or an alkyl group containing 1 to 10 carbon atoms carrying one or more substitutents selected from halogen atoms and hydroxy, cycloalkyl, alkoxy, phenyl and substituted phenyl groups, and pharmaceutically acceptable salts thereof, possess pharmacological properties useful, for example, in the treatment of allergic bronchial asthma.
    Type: Grant
    Filed: May 29, 1973
    Date of Patent: October 19, 1976
    Assignee: May & Baker Limited
    Inventors: Barbara Joyce Broughton, Bryan John Large, Stuart Malcolm Marshall, David Lord Pain, Kenneth Robert Harry Wooldridge
  • Azapurinones
    Patent number: 3933822
    Abstract: 8-Azapurin-6-ones substituted in the 2-position by a phenyl group carrying in a meta-position a sulphamoyl substituent, and also a hydroxy, alkoxy or alkylthio substituent para with respect to the said sulphamoyl grouping, and pharmaceutically acceptable salts thereof, possess pharmacological properties useful in the treatment of allergic respiratory disorders, for example allergic bronchial asthma.
    Type: Grant
    Filed: June 11, 1974
    Date of Patent: January 20, 1976
    Assignee: May & Baker Limited
    Inventors: Barbara Joyce Broughton, Bryan John Large, Stuart Malcolm Marshall, David Lord Pain, Kenneth Robert Harry Wooldridge