Patents by Inventor Helena E. Hunt

Helena E. Hunt 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).

  • Coated ceramic article
    Patent number: 5437933
    Abstract: A ceramic article for use at high temperatures and in corrosive environments comprises a ceramic substrate on which is deposited a substantially non-porous coating of one or more precious metals or alloys thereof.
    Type: Grant
    Filed: February 2, 1993
    Date of Patent: August 1, 1995
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Duncan R. Coupland, Helena E. Hunt