Dennis M Riggs, 67Leesburg, FL

5551451, Sep 3, 1996

Apr 19, 1995

8/425354

Dennis M. Riggs - Belews Creek NC
Dwayne W. Beeson - Kernersville NC
Billy T. Conner - Greensboro NC

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

A24B 1500

131359

The present invention is directed to a composition suitable for making fuel elements for smoking articles, which comprises at least about 50 weight percent, preferably at least about 60 weight percent, and most preferably at least about 70 weight percent powdered elemental carbon, preferably carbon obtained from the controlled carbonization of hardwood paper pulp. The fuel composition also comprises at least about 1 weight percent, preferably at least about 5 weight percent, and most preferably at least about 10 weight percent of a suitable binder. The fuel composition of the present invention can include at least about 3 weight percent, preferably at least about 5 weight percent, and most preferably at least about 8 weight percent powdered graphite. Finally, the fuel composition of the present invention can include at least about 1 weight percent, preferably at least about 2 weight percent, and most preferably at least about 3 weight percent of a suitable inorganic filler such as calcium carbonate, or the like. If necessary or desired, other additives can be included in the fuel compositions of the present invention, including up to about 10 weight percent powdered tobacco and/or up to about 1.

4504454, Mar 12, 1985

Mar 28, 1983

6/479415

Dennis M. Riggs - Simpsonville SC

E. I. Du Pont de Nemours and Company - Wilmington DE

D01F 912

4234471

This invention features an improved spinning process for pitch-based carbon fibers, that will provide a continuous pitch-based carbon fiber having a uniform pattern of graphite crystallites over a substantial portion of the fiber cross-section and/or aligned along the fiber axis in the form of undulating ribbons. Continuous carbon fibers having the preferred orientation of graphite crystallites will exhibit greater mechanical properties.

5211684, May 18, 1993

Jan 10, 1989

7/296539

Michael D. Shannon - Lewisville NC
Richard L. Lehman - Belle Mead NJ
James L. Resce - Yadkinville NC
Olivia P. Furin - Clemmons NC
Joseph T. Meers - Fairview Park OH
Dennis M. Riggs - Belews Creek NC
Ernest G. Farrier - Winston-Salem NC

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

A24B 1510
A24B 1516

131352

The present invention is directed to cigarettes and other smoking articles which contain a catalytic composition, preferably as part of the fuel element, that substantially decreases the amount of carbon monoxide contained in the mainstream smoke during smoking. The present invention also relates to the catalyst-containing carbonaceous fuels themselves, as well as to methods of making such carbonaceous fuels. Fuel elements which contain a catalytic composition in accordance with the presentation are especially useful in smoking articles having an aerosol generating means which is physically separate from the fuel element.

4576811, Mar 18, 1986

Jul 16, 1985

6/755521

Dennis M. Riggs - Simpsonville SC
Hugh E. Redick - Simpsonville SC

E. I. Du Pont de Nemours and Company - Wilmington DE

D01D 500

4234472

A spinnerette for mesophase pitch includes a spinnerette body with a plurality of mesophase pitch fiber forming channels through it. Each bore includes a capillary bore section at the outlet side of the spinnerette body, a wider diameter counter bore at the inlet side and an entrance between the wider bore and capillary bore sections with the entrance wall defining a relatively flat angle for increasing the proportion of tangential cross-section pitch fibers, as compared with radial cross-section fibers.

5415186, May 16, 1995

Apr 16, 1993

8/049057

William J. Casey - Clemmons NC
Jeffery S. Gentry - Pfafftown NC
Alvaro Gonzalez-Parra - Clemmons NC
Aju N. Lekwauwa - Winston-Salem NC
Dennis M. Riggs - Belews Creek NC
Gary R. Shelar - Greensboro NC
Kenneth W. Swicegood - Lexington NC
Ronald O. Wagoner - Winston-Salem NC
Jeffrey A. Willis - Germanton NC
Walter R. D. Young - Winston-Salem NC
Kelly K. Hutchison - Kernersville NC

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

A24D 118

131194

Disclosed is a stabilized substrate composition for smoking articles, particularly cigarettes. In general, the stabilized substrate composition comprises an admixture of a binder and an aerosol forming material which plasticizes the binder, together with optional fillers and/or base materials. In the stabilized substrate compositions of the present invention the relative amounts of binder and aerosol former depend particularly on the situation in which the substrate composition is used. In general, the ratio of aerosol former to binder is between about 3:1 and about 40:1. When the stabilized composition is used on a base material such as tobacco cut filler, the ratio of aerosol former to binder should be at least about 15:1, and preferably is from about 25-35:1, with a maximum ratio of about 40:1. If the composition is formed into a cast sheet, the minimum ratio is about 3:1, the preferred ratio is about 8:1, and the maximum ratio is about 10:1. When the stabilized mixture is printed on a sheet or web substrate, the ratio of aerosol former to binder is generally about 6:1, the maximum ratio is about 10:1, and the minimum ratio is about 3:1.

4395299, Jul 26, 1983

Aug 21, 1981

6/295167

Dennis M. Riggs - Simpsonville SC
Edward L. Harvey - Watertown MA

The United States of America as represented by the Secretary of the Army - Washington DC

C09J 330

156285

Bulk pieces of graphite bonded with a graphitizable binder comprising a lid crystalline component of pitch, which softens at about 240. degree. C. and becomes very fluid at about 300. degree. C. to about 500. degree. C. The bonded graphite pieces appear as a monolithic material even under 1000. times. magnification. The bonding is effected under vacuum or in an inert atmosphere at temperatures of from about 700. degree. C. to about 3000. degree. C. , usually about 1000. degree. C. to about 1500. degree. C. , under pressure of from about 20 psi to about 1000 psi applied in a direction normal to the bonding surface.

5396911, Mar 14, 1995

Nov 27, 1991

7/800679

William J. Casey - Clemmons NC
Jeffery S. Gentry - Pfafftown NC
Alvaro Gonzalez-Parra - Clemmons NC
Aju N. Lekwauwa - Winston-Salem NC
Dennis M. Riggs - Belews Creek NC
Gary R. Shelar - Greensboro NC
Kenneth W. Swicegood - Lexington NC
Ronald O. Wagoner - Winston-Salem NC
Jeffrey A. Willis - Germanton NC
Walter R. D. Young - Winston-Salem NC

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

A24B 1516

131352

Disclosed is a stabilized substrate composition for smoking articles, particularly cigarettes. In general, the stabilized substrate composition comprises an admixture of a binder and an aerosol forming material which plasticizes the binder, together with optional fillers and/or base materials. In the stabilized substrate compositions of the present invention the relative amounts of binder and aerosol former depend particularly on the situation in which the substrate composition is used. In general, the ratio of aerosol former to binder is between about 3:1 and about 40:1. When the stabilized composition is used on a base material such as tobacco cut filler, the ratio of aerosol former to binder should be at least about 15:1, and preferably is from about 25-35:1, with a maximum ratio of about 40:1. If the composition is formed into a cast sheet, the minimum ratio is about 3:1, the preferred ratio is about 8:1, and the maximum ratio is about 10:1. When the stabilized mixture is printed on a sheet or web substrate, the ratio of aerosol former to binder is generally about 6:1, the maximum ratio is about 10:1, and the minimum ratio is about 3:1.

5178167, Jan 12, 1993

Jun 28, 1991

7/722993

Dennis M. Riggs - Belews Creek NC
Alvaro Gonzalez-Parra - Clemmons NC

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

A24B 1516

131359

It has been found that the addition of specific levels of sodium, advantageously in the form of sodium carbonate, to low sodium level binder, e. g. , ammonium alginate, containing carbonaceous fuel compositions results in dramatic changes in the performance of both the fuel element themselves and, cigarettes (or other smoking articles) incorporating the fuel elements. These performance differences include variation in the yields of aerosol and/or flavorants. The addition of sodium carbonate to the fuel elements greatly improves the smolder rates and also improves puff calories, without overheating the cigarette, thereby resulting in substantial improvements in total (and puff by puff) aerosol yield.