Patents by Inventor Keith Graham Lacy

Keith Graham Lacy 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).

  • Fragrance dispensers
    Patent number: 7621511
    Abstract: A fragrance disperser includes a first source (25) of fragrance associated with a first flowpath (21) and a second source of fragrance (26) associated with a second flowpath (23). A fan (17) provides a flow of air along the first flowpath (21) or the second flowpath (23) to release the associated fragrance. A flow controller (38, 52) is movable by an actuator (34) to open and close the flowpaths (21, 23) so that only one fragrance is released at a time or a proportionate mixture of the two fragrances is released.
    Type: Grant
    Filed: April 27, 2004
    Date of Patent: November 24, 2009
    Assignee: Carbonate Limited
    Inventors: Paul Richard Hayes-Pankhurst, Keith Graham Lacy, Paul Simon Wells