Patents by Inventor William S. Nystrom

William S. Nystrom 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).

  • Carbon heat source
    Patent number: 5076296
    Abstract: A carbonaceous heat source for a smoking article is provided. The heat source is designed to maximize heat transfer to a flavor bed in the smoking article. The heat source undergoes substantially complete combustion leaving minimal residual ash, has a relatively low degree of thermal conductivity and ignites under normal lighting conditions for a conventional cigarette.
    Type: Grant
    Filed: July 22, 1988
    Date of Patent: December 31, 1991
    Assignee: Philip Morris Incorporated
    Inventors: William S. Nystrom, Leo C. Lanzel, Harry V. Lanzillotti, Charles R. Hayward, A. C. Lilly, Jr., John R. Hearn