Patents by Inventor Alan George Stephenson

Alan George Stephenson 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).

  • Smoking articles
    Patent number: 6478032
    Abstract: The invention relates to a cigarette paper having a low total filler content, 20% by weight of the paper or less, a proportion of the filler being a filler capable of effecting visible sidestream smoke reduction. The basis weight of the paper is about 30 g m−2 or more. Smoking articles made with such papers provide a synergistic sidestream smoke component reduction when compared with control cigarettes. Papers according to the invention with the addition of various burn additives are also described.
    Type: Grant
    Filed: October 18, 1999
    Date of Patent: November 12, 2002
    Assignee: British-American Tobacco (Investments) Limited
    Inventors: Paul David Case, Alan George Stephenson
  • Low filler content cigarette wrappers
    Patent number: 6161552
    Abstract: The invention relates to a cigarette paper having a low total filler content, 20% by weight of the paper or less, a proportion of the filler being a filler capable of effecting visible sidestream smoke reduction. The basis weight of the paper is about 30 g m.sup.-2 or more.Smoking articles made with such papers provide a synergistic sidestream smoke component reduction when compared with control cigarettes. Papers according to the invention with the addition of various burn additives are also described.
    Type: Grant
    Filed: December 30, 1991
    Date of Patent: December 19, 2000
    Assignee: British-American Tobacco Company Limited
    Inventors: Paul David Case, Alan George Stephenson
  • Smoking articles
    Patent number: 6000404
    Abstract: The invention relates to a cigarette paper having a low total filler content, 20% by weight of the paper or less, a proportion of the filler being a filler capable of effecting visible sidestream smoke reduction. The basis weight of tbh paper is about 30 g m.sup.-2 or more.Smoking articles made with such papers provide a synergistic sidestream smoke component reduction when compared with control cigarettes. Papers according to thee invention with the addition of various burn additives are also described.
    Type: Grant
    Filed: February 26, 1998
    Date of Patent: December 14, 1999
    Assignee: British American Tobacco (Investments) Limited
    Inventors: Paul David Case, Alan George Stephenson