Patents by Inventor Duncan J. McMillan

Duncan J. McMillan 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).

  • Liquid metal ion sources
    Patent number: 4577135
    Abstract: A source for the provision of ions or charged droplets of a liquid metal, consisting of a needle having an emitting tip, a reservoir for a liquid metal, ions or charged droplets of which are to be emitted by the source, and a sheath surrounding the needle and from which the needle projects. The sheath serves to convey liquid metal to the emitting tip of the needle at a controlled rate. There is provided a device for withdrawing the emitting tip of the needle into the sheath so as to enable the emitting tip of the needle to be immersed in the liquid metal.
    Type: Grant
    Filed: February 7, 1983
    Date of Patent: March 18, 1986
    Assignee: United Kingdom Atomic Energy Authority
    Inventors: Derek K. Jeffries, Duncan J. McMillan