Patricia F Perfetti

US Patent:

49985418, Mar 12, 1991

Filed:

Nov 27, 1989

Appl. No.:

7/441677

Inventors:

Patricia F. Perfetti - Winston-Salem NC
William R. Cook - Clemmons NC

Assignee:

R. J. Reynolds Tobacco Company - Winston-Salem NC

International Classification:

A24D 100
A24D 102

US Classification:

131336

Abstract:

Cigarettes which yield low levels of visible sidestream smoke upon use employ a paper wrapping material having about 25 weight percent magnesium hydroxide, about 15 weight percent calcium carbonate and about 60 weight percent flax. The wrapping material has an inherent permeability of about 12 CORESTA units and a net permeability of about 100 to about 130 CORESTA units. The wrapping material containing an amount of water soluble alkali metal salt sufficient to provide at least about 35 mg water soluble alkali metal ions per gram of dry base web. The alkali metal salt is such that the wrapping material includes a significantly greater level of potassium ions than sodium ions. the cigarettes, when employed, provide cohesive ash which is not highly flakey.

US Patent:

50606751, Oct 29, 1991

Filed:

Feb 6, 1990

Appl. No.:

7/475635

Inventors:

Ellen C. Milford - Clemmons NC
Hal E. Guess - Kernersville NC
Paul S. Chapman - Winston-Salem NC
Rebakah S. Dunn - Winston-Salem NC
Patricia F. Perfetti - Winston-Salem NC

Assignee:

R. J. Reynolds Tobacco Company - Winston-Salem NC

International Classification:

A24D 102

US Classification:

131365

Abstract:

Cigarettes which yield low levels of visible sidestream smoke upon use employ a paper wrapping material having about 30 weight percent calcium carbonate and about 70 weight percent flax. The paper wrapper includes a coating or a film of polymeric material and an organic filler material. A preferred polymeric material is nitrocellulose, and a preferred inorganic filler material of the coating is particulate magnesium hydroxide. The coating weighs about 0. 05 to about 0. 5 pound per 3,000 square feet of wrapping material.

US Patent:

51038447, Apr 14, 1992

Filed:

Jun 7, 1990

Appl. No.:

7/534785

Inventors:

Rhonda F. Hayden - Winston-Salem NC
Elbert C. Jones - Sherrill's Ford NC
Jerry W. Lawson - Clemmons NC
Richard L. Lehman - Belle Mead NJ
Patricia F. Perfetti - Winston-Salem NC

Assignee:

R. J. Reynolds Tobacco Company - Winston-Salem NC

International Classification:

A24D 100

US Classification:

131365

Abstract:

Cigarettes have a tobacco rod including smokable material circumscribed by a paper wrapper. The paper wrapper includes a cellulosic base web (e. g. , flax and/or wood pulp fibers) and particles of at least one inorganic filler material. The inorganic filler material includes calcium sulfate, and normally fibers of calcium sulfate having an aspect ratio of about 30.

US Patent:

49414852, Jul 17, 1990

Filed:

Apr 18, 1989

Appl. No.:

7/339933

Inventors:

Patricia F. Perfetti - Winston-Salem NC
Gary R. Andersen - Clemmons NC

Assignee:

R. J. Reynolds Tobacco Company - Winston-Salem NC

International Classification:

A24D 402

US Classification:

131365

Abstract:

Cigarettes which yield low levels of visible sidestream smoke upon use employ a paper wrapping material having about 25 weight percent magnesium hydroxide, about 15 weight percent calcium carbonate and about 60 weight percent flax. The wrapping material has an inherent permeability of about 12 CORESTA units and a net permeability of about 100 to about 130 CORESTA units. The wrapping material containing an amount of water soluble alkali metal salt and water soluble alkali earth metal salt sufficient to provide at least about 20 mg water soluble alkali metal and alkali earth metal ions per gram of dry base web. The cigarettes, when employed, provide cohesive ash which is not highly flakey.

US Patent:

52614255, Nov 16, 1993

Filed:

Feb 27, 1991

Appl. No.:

7/661747

Inventors:

Mark L. Raker - Clemmons NC
Barbara W. Arzonico - Lewisville NC
Patricia F. Perfetti - Winston-Salem NC
Thomas L. Gentry - Winston-Salem NC
Cynthia L. Davis - Mocksville NC

Assignee:

R. J. Reynolds Tobacco Company - Winston-Salem NC

International Classification:

A24D 102

US Classification:

131365

Abstract:

A cigarette includes a charge or roll of smokable material (e. g. , tobacco cut filler) circumscribed by two layers of paper wrapping materials. The first or inner wrapping material includes an inorganic filler material and tobacco material within the web. The inner wrapping material also can include a water soluble salt burn chemical and a carbonaceous material within the web. The second or outer wrapping material circumscribes and overwraps the first wrapping material, has a cellulosic base web and inorganic filler material, and exhibits a low inherent air permeability. The outer wrapping material can include a magnesium hydroxide filler, and exhibits an inherent air permeability of below about 15 CORESTA units and a net air permeability above about 40 CORESTA units. The cigarette is capable of sustaining smolder under FTC smoking conditions while yielding very low levels of visible sidestream smoke.