Patents by Inventor Robert Joseph Drysdale

Robert Joseph Drysdale 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).

  • Ultraviolet water treatment system
    Patent number: 7002140
    Abstract: An ultraviolet water treatment system comprising a water chamber having a water intake for untreated water to enter the chamber, and a water outlet for water to leave the chamber; an ultraviolet light source; and a fibre optic rod having a distributing end and a receiving end, the receiving end is located to receive the focused ultraviolet light from the light source and convey the light through the rod and out the distributing end into the chamber to treat the water.
    Type: Grant
    Filed: February 4, 2004
    Date of Patent: February 21, 2006
    Assignee: Fibro Light Technology Inc.
    Inventors: Christopher J. Elsegood, Robert Joseph Drysdale, L. Michael Roberts