Patents by Inventor Graham Arton Howarth

Graham Arton Howarth 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 the control of microorganisms
    Patent number: 4044130
    Abstract: Compounds of the class of substituted or unsubstituted 4-amino-3-(5-nitro-2-furyl)-1H-pyrazolo[3,4-d]pyrimidine and their 5-N oxides have antimicrobial properties and are active ingredients in pharmaceutical compositions and animal feedstuff compositions, an illustrative example is 4-amino-1-methyl-3-(5-nitro-2-furyl)-1H-pyrazolo[3,4-d]pyrimidine.
    Type: Grant
    Filed: December 17, 1975
    Date of Patent: August 23, 1977
    Assignee: Ciba-Geigy Corporation
    Inventors: Graham Arton Howarth, James Gainer
  • New 5-nitrofuryl derivatives
    Patent number: 3948913
    Abstract: Compounds of the class of substituted or unsubstituted 4-amino-3-(5-nitro-2-furyl)-1H-pyrazolo[3,4-d]pyrimidine and their 5-N oxides have antimicrobial properties and are active ingredients in pharmaceutical compositions and animal feedstuff compositions, an illustrative example is 4-amino-1-methyl-3-(5-nitro-2-furyl)-1H-pyrazolo[3,4-d]pyrimidine.
    Type: Grant
    Filed: July 3, 1974
    Date of Patent: April 6, 1976
    Assignee: Ciba-Geigy Corporation
    Inventors: Graham Arton Howarth, James Gainer