Patents by Inventor John Robert Roth

John Robert Roth 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).

  • Apparatus for and method of monitoring particulate material in a fluid
    Patent number: 7162057
    Abstract: Apparatus for monitoring particulate material in a fluid comprising a passageway (17), through which fluid to be monitored is passed, at least a portion (24) of the boundary of the passageway (17) being translucent to enable radiation to pass through that portion (24). A camera (40) is arranged to receive such radiation and is constructed to generate electrical signals representative of the images it receives. Image analysis means (57) are connected to receive those electrical signals and to provide data from them relating to the particulate material contained within the fluid.
    Type: Grant
    Filed: March 2, 2000
    Date of Patent: January 9, 2007
    Assignee: Jorin Limited
    Inventors: Nicholas James Roth, John Robert Roth, Roderick Clive Gaskin