1
Michael D Shannon, Richard L Lehman, James L Resce, Olivia P Furin, Joseph T Meers, Dennis M Riggs, Ernest G Farrier: Catalyst containing smoking articles for reducing carbon monoxide. R J Reynolds Tobacco Company, Grover M Myers, David G Conlin, May 18, 1993: US05211684 (106 worldwide citation)

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 ...


2
William J Casey III, Jeffery S Gentry, Alvaro Gonzalez Parra, Aju N Lekwauwa, Dennis M Riggs, Gary R Shelar, Kenneth W Swicegood, Ronald O Wagoner, Jeffrey A Willis, Walter R D Young Jr: Substrate material for smoking articles. R J Reynolds Tobacco Company, Grover M Myers, David G Conlin, March 14, 1995: US05396911 (89 worldwide citation)

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 th ...


3
Russell J Diefendorf, Dennis M Riggs: Forming optically anisotropic pitches. Exxon Research & Engineering Co, Joseph J Dvorak, June 17, 1980: US04208267 (66 worldwide citation)

An improved process for preparing liquid-crystal containing pitches comprises extracting carbonaceous isotropic pitches with an organic solvent system to provide a solvent insoluble fraction which when heated for 10 minutes or less and to temperatures in the range of about 230.degree. C. to 400.degr ...


4
Dennis M Riggs, Dwayne W Beeson, Billy T Conner: Fuel element composition. R J Reynolds Tobacco Company, September 3, 1996: US05551451 (65 worldwide citation)

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 ...


5
Dennis M Riggs, Alvaro Gonzalez Parra: Carbonaceous composition for fuel elements of smoking articles and method of modifying the burning characteristics thereof. R J Reynolds Tobacco Company, Grover M Myers, David G Conlin, January 12, 1993: US05178167 (61 worldwide citation)

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, cig ...


6
William J Casey III, Jeffery S Gentry, Alvaro Gonzalez Parra, Aju N Lekwauwa, Dennis M Riggs, Gary R Shelar, Kenneth W Swicegood, Ronald O Wagoner, Jeffrey A Willis, Walter R D Young Jr, Kelly K Hutchison: Substrates material for smoking articles. R J Reynolds Tobacco Company, Grover M Myers, David G Conlin, May 16, 1995: US05415186 (33 worldwide citation)

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 th ...


7
Russell J Diefendorf, Dennis M Riggs: Process for producing carbon fibers from heat treated pitch. Exxon Research & Engineering Co, Lawrence Rosen, May 25, 1982: US04331620 (24 worldwide citation)

Heat treated pitches, especially pitches containing either isotropic or anisotropic phases as well as mixtures thereof, are spun by subjecting the pitch at spinning temperatures to shearing forces while simultaneously spinning the pitch.


8
Dennis M Riggs, Hugh E Redick: Process for adjusting the fiber structure of mesophase pitch fibers. E I Du Pont de Nemours and Company, March 18, 1986: US04576811 (17 worldwide citation)

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 wid ...


9
Dennis M Riggs: Process of spinning pitch-based carbon fibers. E I Du Pont de Nemours and Company, March 12, 1985: US04504454 (17 worldwide citation)

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 undul ...


10
Dennis M Riggs, Edward L Harvey: Bonded bulk graphite and process for bonding. The United States of America represented by the Secretary of the Army, Robert P Gibson, Anthony T Lane, Lawrence E Labadini, July 26, 1983: US04395299 (5 worldwide citation)

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. m ...



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