Patents by Inventor George Richard Birchall

George Richard Birchall 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).

  • Compositions for killing internal parasites containing 3-tert-alkyl-4-hydroxy-5-halo-benzylidene-malonitriles
    Patent number: 4064266
    Abstract: A compound of the general formula I ##STR1## wherein R.sup.1 is halogen, R.sup.4 is a highly branched alkyl group, R.sup.2 and R.sup.3 which may be the same or different are hydrogen or halogen atoms or lower alkyl groups.
    Type: Grant
    Filed: September 7, 1976
    Date of Patent: December 20, 1977
    Assignee: ICI Australia Limited
    Inventors: George Richard Birchall, Donald William Gerald Harney, Bruce Adam Forsyth
  • Indole derivatives for providing analgesic and anti-inflammatory effects
    Patent number: 4012513
    Abstract: 1-(Heterocyclic)-indol-3-ylacetic acid derivatives, processes for their preparation, and pharmaceutical compositions comprising them. An illustrative compound of the invention is 1-(7-chloroquinazolin-4-yl)-5-methoxy-2-methylindol-3-ylacetic acid. The compounds have anti-inflammatory, analgesic and antipyretic activity. This application is a continuation-in-part of Ser. No. 296,202, filed Oct. 10, 1972, now U.S. Pat. No. 3,884,919.
    Type: Grant
    Filed: December 23, 1974
    Date of Patent: March 15, 1977
    Assignee: Imperial Chemical Industries Limited
    Inventors: George Richard Birchall, Walter Hepworth, Stephen Collyer Smith