Patents by Inventor Charles D. Fields

Charles D. Fields 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).

  • Pearlescent film coating systems and substrates coated therewith
    Patent number: 6902609
    Abstract: The present invention is directed to film coating systems for use on oral dosage forms such as compressed tablets and orally-ingestible substrates which have improved pearlescent qualities. The film coating systems can be applied either directly to a substrate or after the substrate has been coated with a subcoat. In preferred aspects, the pearlescent film coating is prepared as a dry powder mixture containing a cellulosic polymer, a detackifier, a gloss enhancer, and a pearlescent pigment. Film coating compositions containing an aqueous suspension of the powder mixtures, methods of applying the coatings to substrates and the coated substrates are also disclosed.
    Type: Grant
    Filed: February 13, 2004
    Date of Patent: June 7, 2005
    Assignee: BPSI Holdings, Inc.
    Inventors: Rita M. Steffenino, Franklin J. Gulian, Irvin M. Lash, Thomas P. Farrell, Charles D. Fields
  • Pearlescent film coating systems and substrates coated therewith
    Publication number: 20040182283
    Abstract: The present invention is directed to film coating systems for use on oral dosage forms such as compressed tablets and orally-ingestible substrates which have improved pearlescent qualities. The film coating systems can be applied either directly to a substrate or after the substrate has been coated with a subcoat. In preferred aspects, the pearlescent film coating is prepared as a dry powder mixture containing a cellulosic polymer, a detackifier, a gloss enhancer, and a pearlescent pigment. Film coating compositions containing an aqueous suspension of the powder mixtures, methods of applying the coatings to substrates and the coated substrates are also disclosed.
    Type: Application
    Filed: February 13, 2004
    Publication date: September 23, 2004
    Inventors: Rita M. Steffenino, Franklin J. Gulian, Irvin M. Lash, Thomas P. Farrell, Charles D. Fields