Patents by Inventor Timothy C. Walsgrove

Timothy C. Walsgrove 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).

  • Process
    Patent number: 5336781
    Abstract: There is disclosed a process for the preparation of a compound of structure (I) ##STR1## in which n is 1 to 3 and each group R is hydrogen or C.sub.1-4 alkyl, which comprises, reaction of compound of structure (II) ##STR2## (prepared by esterifying the hydroxyl compound) in which R.sup.1 is C.sub.1-4 alkyl, phenyl or substituted phenyl and n is 1 to 3, with an amine HNR.sub.2 in which R is as described for structure (I), and optionally thereafter forming a salt. Intermediates are also disclosed.
    Type: Grant
    Filed: October 14, 1992
    Date of Patent: August 9, 1994
    Assignee: SmithKline & French Laboratories Limited
    Inventors: Robert Giles, Timothy C. Walsgrove
  • Process
    Patent number: 4950765
    Abstract: This invention relates to a catalytic transfer hydrogenation process using water as a solvent in the preparation of substituted indolinone derivatives.
    Type: Grant
    Filed: August 24, 1987
    Date of Patent: August 21, 1990
    Assignee: Smith Kline & French Laboratories Limited
    Inventors: Timothy C. Walsgrove, Paul Oxley