Patents by Inventor John Teape

John Teape 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).

  • Electrical apparatus for ejecting material from a liquid
    Patent number: 6394583
    Abstract: There is disclosed an ejection apparatus for ejecting material from a fluid. An ejection cell (5) contains fluid from which the material is to be ejected and has an ejection upstand (6) which defines a location from which the material is ejected. One or more ejection electrodes (9) are disposed in the cell substantially surrounding the ejection upstand (6).
    Type: Grant
    Filed: June 22, 1999
    Date of Patent: May 28, 2002
    Assignee: Tonejet Corporation Pty Ltd.
    Inventors: Daniel Richard Mace, Philip Atkin, Richard Wilhelm Janse Van Rensburg, John Teape, Neil Emerton, Guy Charles Fernley Newcombe
  • Method and apparatus for ejecting particulate material including secondary electrode disposed transverse to a row of ejection electrodes
    Patent number: 6247797
    Abstract: An apparatus for ejecting material from a liquid has an ejection location 91) with an electrode (3). An electrical potential is applied to the ejection location electrode to form an electric field at the location together; liquid is supplied to the ejection location which contains the particulate material to be ejected from the ejection location. A secondary electrode (5, 8) is disposed adjacent to the ejection location and the voltage on the ejection location electrode is controllable so as to reduce the sensitivity of the head to influence by external electric fields.
    Type: Grant
    Filed: July 17, 1998
    Date of Patent: June 19, 2001
    Assignee: Tonejet Corporation PTY, Ltd.
    Inventors: Guy Charles Fernley Newcombe, Neil Emerton, John Teape, Richard Wilhelm Janse Van Rensburg, Peter John Taylor