Patents by Inventor Christopher Mark Richardson

Christopher Mark Richardson 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).

  • Stabilization of perfluoroalkyl alkyl ketones
    Patent number: 6531075
    Abstract: Acids having a pKa of less than about 4 may be used to stabilize certain perfluoroalkyl alkyl ketones, particularly a substantially pure perfluoroalkyl alkyl ketone, a substantially pure aqueous solution of a perfluoroalkyl alkyl ketone or a substantially pure hydrate of a perfluoroalkyl alkyl ketone.
    Type: Grant
    Filed: October 29, 1999
    Date of Patent: March 11, 2003
    Assignee: Rhodia Limited
    Inventors: Christophe Rochin, Christopher Mark Richardson