Patents by Inventor Brian L. Corfield

Brian L. Corfield 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).

  • Manufacture of highlighted intagliated articles
    Patent number: 4522840
    Abstract: Process for manufacturing colored solid articles, e.g. pharmaceutical tablets, bearing at least one highlighted intagliation, which comprises (1) either (A) applying to said articles a film coating suspension comprising at least one defined optically anisotropic substance and at least one film coating agent, or (B) applying to said articles a suspension comprising at least one defined optically anisotropic substance but no film coating agent, and then (2) spraying the resulting articles with a solvent, and in which both of the steps (1) and (2) are carried out in a conventional film coating apparatus.
    Type: Grant
    Filed: May 31, 1983
    Date of Patent: June 11, 1985
    Assignee: Imperial Chemical Industries PLC
    Inventors: Brian L. Corfield, Raymond C. Rowe