Patents by Inventor Ralph Shuttleworth

Ralph Shuttleworth 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 for making 2-hydroxymandelic acid and 2-hydroxybenzaldehydes
    Patent number: 5248816
    Abstract: A method for the preparation of a 2-hydroxymandelic acid of the formula ##STR1## wherein R represents an alkyl radical containing from 7 to 12 carbon atoms which comprises reacting glyoxylic acid with a phenol of the formula: ##STR2## under acid conditions. Oxidation of the 2-hydroxymandelic acid to the corresponding 2-hydroxybenzaldehyde is also described.
    Type: Grant
    Filed: October 8, 1992
    Date of Patent: September 28, 1993
    Assignee: Imperial Chemical Industries PLC
    Inventors: Ralph Shuttleworth, Jan M. Fielden, Daniel Levin