Patents by Inventor Kieth Hopkinson Gibson

Kieth Hopkinson Gibson 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).

  • Quinazoline derivatives
    Patent number: 5770599
    Abstract: The invention concerns quinazoline derivatives of the formula I ##STR1## wherein n is 1, 2 or 3 and each R.sup.2 is independently halogeno, trifluoromethyl or (1-4C)alkyl;R.sup.3 is (1-4C)alkoxy; andR.sup.1 is di-?(1-4C)alkyl!amino-(2-4C)alkoxy, pyrrolidin-1-yl-(2-4C)alkoxy, piperidino-(2-4C)alkoxy, morpholino-(2-4C)alkoxy, piperazin-1-yl-(2-4C)alkoxy, 4-(1-4C)alkylpiperazin-1-yl-(2-4C)alkoxy, imidazol-1-yl-(2-4C)alkoxy, di-?(1-4C)alkoxy-(2-4C)alkyl!amino-(2-4C)alkoxy, thiamorpholino-(2-4C)alkoxy, 1-oxothiamorpholino-(2-4C)alkoxy or 1,1-dioxothiamorpholino-(2-4C)alkoxy, and wherein any of the above-mentioned R.sup.1 substituents comprising a CH.sub.2 (methylene) group which is not attached to a N or O atom optionally bears on said CH.sub.
    Type: Grant
    Filed: April 26, 1996
    Date of Patent: June 23, 1998
    Assignee: Zeneca Limited
    Inventor: Kieth Hopkinson Gibson