Patents by Inventor Milly M. L. Wong

Milly M. L. Wong 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: 5542529
    Abstract: A high barrier sealable packaging material and a high barrier heat sealed package for smoking articles, such as cigarettes and the like, are disclosed. The packaging material comprises a base layer of a polymeric film, such as a biaxially oriented polyethylene terephthalate (PET) film which has been metallized on one surface thereof with a layer of metal, such as aluminum. The metallized film is then imprinted with ink with a design and/or printed matter on either the metallized or unmetallized surface. Subsequently to or concurrently with the printing, a heat seal layer is applied to the printed and/or unprinted surface for forming a heat seal about which the material is wrapped. In one embodiment, the high barrier packaging material is used as an overwrap for a cigarette package having a tear tape for removing one end of the overwrap.
    Type: Grant
    Filed: December 23, 1994
    Date of Patent: August 6, 1996
    Assignee: R. J. Reynolds Tobacco Company
    Inventors: Carl C. Hein, III, Matthew S. Koschak, Mark S. Powell, Peter P. Shearer, Milly M. L. Wong
  • Patent number: 5435326
    Abstract: A smoking article having a controlled yield of wet particulate matter and a method of making a smoking article with predetermined total and per puff yields of wet particulate matter. The smoking article has a tobacco rod connected to an air ventilated compound filter having two abutted filter segments, a rod end segment with a passage therethrough and a mouth end segment. The pressure drop of the abutment interface between the segments is selected to be in a range of from about 10 mm to about 100 mm water gauge. The total pressure drop of the filter including the interface and the amount of air dilution can be selected to provide a smoking article with a level per puff yield or a decreasing per puff yield.
    Type: Grant
    Filed: July 27, 1993
    Date of Patent: July 25, 1995
    Assignee: R. J. Reynolds Tobacco Company
    Inventors: Thomas L. Gentry, Russell D. Barnes, Richard L. Blakley, Charles R. Ashcraft, Juanilla M. Gwyn, James W. Pryor, Henry T. Ridings, Milly M. L. Wong
  • Patent number: 5396909
    Abstract: A cigarette smoking article includes a tobacco rod and a dual filter comprising a tobacco rod end segment made of cellulose acetate tow and a mouth end segment made of a gathered, perforated polymeric film blended with a whitener to produce a substantially non-staining mouth end surface. The polymeric film may also comprise a coextruded flavor film with a flavor carrier layer disposed between a pair of barrier layers for releasing a flavorant into the mainstream smoke during smoking of the cigarette. Transparent wraps may be used to construct the cigarette from the component parts so that the filtration surfaces of the filter rod are visible through the wraps.
    Type: Grant
    Filed: December 16, 1993
    Date of Patent: March 14, 1995
    Assignee: R. J. Reynolds Tobacco Company
    Inventors: Thomas L. Gentry, William M. Coleman, III, Charles R. Ashcraft, Dennis L. Carespodi, Milly M. L. Wong
  • Patent number: 5249676
    Abstract: A flavor burst structure and a method of dispersing a flavorant are disclosed. The flavor burst structure comprises a multilayer film with a flavor carrier layer disposed between barrier layers. The flavor carrier layer comprises a polymeric material blended with a flavorant that is not compatible or is partially incompatible with the polymeric material so that the flavorant desorbs from the carrier layer when one of the barrier layers is removed from the carrier layer. Several package applications are disclosed, including a cigarette package, package tear tapes and the like.
    Type: Grant
    Filed: March 22, 1993
    Date of Patent: October 5, 1993
    Assignee: R. J. Reynolds Tobacco Company
    Inventors: Charles R. Ashcraft, Milly M. L. Wong
  • Patent number: 5105834
    Abstract: A cigarette comprises a blend of tobacco materials and a filter element provided from a non-woven thermoplastic material. The non-woven material comprises polyester or polypropylene fibers. The non-woven material is in intimate contact with a water soluble tobacco extract and a further material for altering the character of mainstream smoke which passes through the filter element. The tobacco extract can be a spray dried extract which has been subjected to heat treatment. The further material can be an acid (e.g., levulinic acid), a base (e.g., sodium hydroxide) or a salt (e.g., diammonium hydrogen orthophosphate).
    Type: Grant
    Filed: November 6, 1990
    Date of Patent: April 21, 1992
    Assignee: R.J. Reynolds Tobacco Company
    Inventors: Barry L. Saintsing, Jerry W. Redding, Milly M. L. Wong, Thomas A. Perfetti
  • Patent number: 5074319
    Abstract: Flavorful tobacco-derived flavorful components of a tobacco material are provided by extraction of the tobacco material with an extraction solvent in the form of a polyhydric alcohol or ester thereof. The tobacco material is subjected to extraction conditions above about 100.degree. C. and under conditions sufficient to provide the flavorful tobacco-derived extraction product. The tobacco material and the extraction solvent can be contacted in the presence of at least one reaction component such as at least one amino acid and/or at least one sugar.
    Type: Grant
    Filed: April 19, 1990
    Date of Patent: December 24, 1991
    Assignee: R. J. Reynolds Tobacco Company
    Inventors: Jackie L. White, Thomas A. Perfetti, Milly M. L. Wong
  • Patent number: 5060669
    Abstract: Flavorful tobacco extracts are provided by subjecting a moist spray dried tobacco extract to heat treatment. The moist extract is contacted with a sugar and an amino acid, and exposed to a temperature above about 100.degree. C. in a pressure controlled vessel. Resulting flavorful extracts are useful as forms of tobacco in cigarettes and other smoking articles.
    Type: Grant
    Filed: December 18, 1989
    Date of Patent: October 29, 1991
    Assignee: R. J. Reynolds Tobacco Company
    Inventors: Jackie L. White, Milly M. L. Wong, Chi-Kuen Shu, Thomas A. Perfetti
  • 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