Patents by Inventor Michael Spowage

Michael Spowage 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).

  • Amino naphthyridine compounds as anti-rhoumatic agents
    Patent number: 5464781
    Abstract: This invention relates to compounds of formula I and pharmaceutically acceptable salts thereof ##STR1## in which R.sub.1 represents hydrogen, alkyl, hydroxy, carboxyalkenyl, alkoxycarbonyalkenyl, hydroxyalkyl, carboxyalkyl, alkoxycarbonylalkyl, alkoxy, halogenated alkyl, carboxy alkoxycarbonyl or alkanoylamino; R.sub.2 represents hydrogen, halo, alkoxy, hydroxy, alkanoyloxy, or phenoxy; R.sub.3 represents hydrogen or alkyl; R.sub.4 represents hydrogen, halo, alkoxycarbonyl, a benzyloxycarbonyl, alkanoyl, benzoyl, carbamoyl, alkyl, carboxy, hydroxyalkyl or alkylthio; R.sub.5 represents hydrogen or alkyl; R.sub.6 represents hydrogen, alkyl [optionally substituted by one or more of the following: hydroxy, halo or an amino group of formula --NR.sub.12 R.sub.13 ], a C.sub.3-12 alicyclic hydrocarbon group, phenyl, (cycloalkyl)alkyl or benzyl; R.sub.7 represents hydrogen, halo, trifluoromethyl, trifluoromethoxy, alkyl, carboxy, or alkoxy; R.sub.
    Type: Grant
    Filed: June 3, 1994
    Date of Patent: November 7, 1995
    Assignee: The Boots Company PLC
    Inventors: Bernard J. Armitage, John G. Bowen, Malcolm J. Crossley, Ian M. Hunneyball, Bruce W. Leslie, Thomas K. Miller, Michael Spowage