Patents by Inventor Arthur W. R. Balkham

Arthur W. R. Balkham 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).

  • Air freshener unit
    Patent number: 4735626
    Abstract: New dynamic air freshener unit comprises a porous synthetic polymer support impregnated with a fragrance. The synthetic polymer support is one produced by:(a) bonding together small particles of solid polymer;(b) coagulating polymer solutions in a non-solvent for the polymer; or(c) expanding a thermoplastic or thermosetting plastic by means of a blowing agent; to form a porous body.The unit is especially useful in vacuum cleaners.
    Type: Grant
    Filed: July 6, 1987
    Date of Patent: April 5, 1988
    Assignees: Reckitt & Colman Products Limited, Porvair Limited
    Inventors: Brian R. Smith, Arthur W. R. Balkham