Patents by Inventor Alison Twitty

Alison Twitty 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 article
    Patent number: 5756223
    Abstract: An article for use at high temperatures and in corrosive environments comprising a substrate of refractory metal or alloy thereof. The substrate is coated with an interlayer followed by an optional preliminary coating and a final coating of a platinum group metal. The interlayer reduces oxidation of the substrate and prevents metallic interdiffusion between the final coating and substrate contributing both to an improved tolerance of the article to the working environment and reduced manufacturing costs.
    Type: Grant
    Filed: March 24, 1995
    Date of Patent: May 26, 1998
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Donald S. Cameron, Duncan R. Coupland, Alison Twitty