Patents by Inventor Brian M. Lawrence

Brian M. Lawrence 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: 5413122
    Abstract: A flavorful and aromatic compound for use in a smoking article is provided by subjecting an amino acid having a hydroxy group to heat treatment at a pressure of about 10 psig to about 1000 psig and at a temperature of at least about 100.degree. C. to provide a reaction material including flavorful and aromatic composition, and collecting the flavorful and aromatic composition for use in altering the aroma of mainstream smoke upon burning of a smoking compound during use.
    Type: Grant
    Filed: February 18, 1992
    Date of Patent: May 9, 1995
    Assignee: R. J. Reynolds Tobacco Company
    Inventors: Chi-Kuen Shu, Brian M. Lawrence
  • Patent number: 5370139
    Abstract: A process is provided for treating tobacco material for use in a smoking article comprising the step of applying a flavorful and aromatic casing and top dressing composition comprising a weak ammonium salt and a sugar or sugar derivative to a tobacco material. The present also provides a smoking article including tobacco material wherein the tobacco material is in intimate contact with a casing and top casing composition comprising a weak ammonium salt and a sugar or sugar derivative.
    Type: Grant
    Filed: October 14, 1993
    Date of Patent: December 6, 1994
    Assignee: R. J. Reynolds Tobacco Company
    Inventors: Chi-Kuen Shu, Brian M. Lawrence, Joyce R. Durham, Dwo Lynm
  • Patent number: 4991596
    Abstract: A smoking article includes a short, combustible, carbonaceous fuel element in a heat exchange relationship with a substrate carrying glycerin, tobacco extract, and a portion of an essential oil gland bearing plant. For example, fragments of cinnamon bark, lovage root, chamomile flowers or cardamon physically separate from the fuel element provide for a controlled release of a flavor profile during use of the smoking article. Heat provided by the burning fuel element acts to release essential oils from the glands to provide a complex flavor and aroma profile. The smoking article is capable of providing the user with many of the pleasures of smoking by heating but not necessarily burning tobacco.
    Type: Grant
    Filed: July 11, 1989
    Date of Patent: February 12, 1991
    Assignee: R. J. Reynolds Tobacco Company
    Inventors: Brian M. Lawrence, Milly M. L. Wong, Thomas A. Perfetti, Thomas L. Gentry, Alvaro Gonzalez-Parra, Jerry W. Lawson, Gary R. Shelar, Gary W. Worrell
  • Patent number: 4920990
    Abstract: Cigarettes have a smokable filler blend comprising 60 to 75 percent tobacco cut filler and 25 to 40 percent of a second smokable cut filler consisting essentially of 50 to 70 percent calcium carbonate, 15 to 45 percent pyrolyzed cotton linters, and 7 to 12 percent polysaccharide binder. The blend is contained in a paper wrapper having a permeability from about 40 to about 75 CORESTA units. Cigarettes normally include a filter element and are air diluted to an air dilution level of from 40 to 65 percent. The smokable blend preferably is blended with a tobacco essence, and the nicotine content of the blend is greater than 2 percent. Cigarettes exhibit resistances to draw between 80 and 150 mm water pressure drop at 17.5 cc/sec. air flow. Cigarettes exhibit FTC "tar" to nicotine ratios less than 9.
    Type: Grant
    Filed: November 23, 1988
    Date of Patent: May 1, 1990
    Assignee: R. J. Reynolds Tobacco Company
    Inventors: Brian M. Lawrence, Robert F. Moates, Thomas A. Perfetti, Renee M. Pogrow, Robert H. Powell, Jerry W. Redding, Cynthia A. Stewart, Karen M. Womble, Milly M. L. Wong