Patents by Inventor Grant M. Stewart

Grant M. Stewart 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).

  • Patent number: 5019122
    Abstract: A heat conductive capsule which carries or contains an aerosol forming material for use in smoking articles which upon heating ruptures or otherwise undergoes a change in structure to release at least a portion of the aerosol forming material, which aerosol resembles tobacco smoke, but preferably contains no more than a minimal amount of incomplete combustion or pyrolysis products.The preferred smoking article of the present invention provides an aerosol "smoke" which is chemically simple, consisting essentially of air, oxides of carbon, water, and the aerosol which carries any desired flavor or other desired volatile materials, and trace amounts of other materials.One especially preferred embodiment of the present smoking article comprises a short combustible carbonaceous fuel element, encapsulated aerosol forming substance, and a relatively long mouthend piece. The capsule is preferably formed from a heat conductive metal such as aluminum foil.
    Type: Grant
    Filed: August 21, 1987
    Date of Patent: May 28, 1991
    Assignee: R. J. Reynolds Tobacco Company
    Inventors: Jack F. Clearman, William J. Casey, Olivia P. Furin, Grant M. Stewart