Patents by Inventor Joanna Mary Sharp

Joanna Mary Sharp 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).

  • Lubricated metal workpiece and method
    Patent number: 6329329
    Abstract: A lubricant is provided which has a hardness in the range 0.1-10 N/mm at all temperatures in the range 15-40° C. The lubricant consists of at least one full ester of a glycol with a fatty acid, e.g. ethylene glycol dilaurate, optionally mixed with a minor amount of a fatty acid such as stearic acid, and/or a minor amount of a partial ester of a glycol with a fatty acid. The lubricant is useful in the production of press-formed components, and particularly in techniques for converting aluminium sheet to adhesively bonded aluminium structures.
    Type: Grant
    Filed: September 6, 2000
    Date of Patent: December 11, 2001
    Assignee: Alcan International Limited
    Inventors: Joanna Mary Sharp, William Francis Marwick, Alan Robert Carr, Peter Geoffrey Sheasby