By Organic Solvent Patents (Class 131/298)
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Patent number: 11026452Abstract: A vaporizer is provided, including a body, a concentrate chamber provided within the body and including at least one chamber aperture, a concentrate pusher configured to push material through the concentrate chamber, a heating element having at least one element aperture, the heating element positioned proximate the at least one chamber aperture and configured to heat material pushed through the concentrate chamber, and a power source configured to apply power to the heating element.Type: GrantFiled: August 2, 2018Date of Patent: June 8, 2021Assignee: Banana Bros, LLCInventors: David Richmond, Howard Richmond, Manuel A. Montano, Jeffery Kunkler
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Patent number: 10639439Abstract: A pharmaceutical composition and administration apparatus includes a portable powered vaporizer with a mouthpiece, smokeless vaporizing element, and a removable chamber. The chamber contains a composition comprising tetrahydrocannabinol (THC), cannabidiol (CBD), FCC grade ethanol, flavoring, pharmaceutical grade nicotine, USP grade aqueous glycerine, USP/EP grade propylene glycol, and USP grade vegetable glycerine. In various formulas the THC may be at concentrations of 1-30%, 30-60% and 60-99%, while CBD concentrations may be 0-15% including other cannabinoids derived from extraction.Type: GrantFiled: January 29, 2014Date of Patent: May 5, 2020Assignee: MIDWEST PHARMACEUTICALS, LLCInventor: Raymond Louis Larson
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Patent number: 10357054Abstract: A smokeless tobacco pastille configured for insertion into the mouth of a user is provided. The smokeless tobacco pastille can include (i) a tobacco material present in an amount of less than about 40 dry weight percent, based on the total dry weight of the pastille; (ii) at least one natural gum binder present in an amount of at least about 25 dry weight percent; and (iii) a plurality of sugar alcohols present in a total amount of at least about 40 dry weight percent, the predominant component of the plurality of sugar alcohols being isomalt or erythritol, wherein the shape of the smokeless tobacco pastille is moldable in the oral cavity.Type: GrantFiled: October 16, 2013Date of Patent: July 23, 2019Assignee: R.J. Reynolds Tobacco CompanyInventors: Jerry Wayne Marshall, Daniel Verdin Cantrell, Serban C. Moldoveanu
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Patent number: 10039311Abstract: Systems and methods for manufacturing and vaporizing a tobacco extract for use in a non-combustible smoking device are described. These methods include a solution having a volume of a liquid tobacco extract suspended in a hygroscopic liquid glycerol solvent. The systems and methods provide advantages in that the method is substantially free of water and results in an improved tobacco flavor extract.Type: GrantFiled: October 16, 2015Date of Patent: August 7, 2018Assignee: Securience, LLCInventors: Donald J. Muehlbauer, Ryan Jenson, S. Anthony Pace
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Patent number: 9497993Abstract: Process for refilling an electronic cigarette with refillable reservoir, implemented by means of a container (10) of a single dose of a concentrated aroma, in liquid state, for producing a liquid refill of said electronic cigarette, wherein said container (10) comprises at least a liquid reservoir (14) and a closed mouth (15), in liquid-tight communication with said reservoir (14), comprising the following steps: extracting said single dose of a concentrated aroma from said container (10), after opening said mouth (15); mixing said single dose of a concentrated aroma with a solvent medium, or diluent, obtaining a solution, or a heterogeneous compound, for producing at least one refill for said electronic cigarette; inserting, into the reservoir of said electronic cigarette, an amount of solution, or heterogeneous compound, corresponding to the amount required to produce this refill.Type: GrantFiled: June 17, 2014Date of Patent: November 22, 2016Inventors: Ramon Manolo Vallar, Alessio Cipullo, Filippo Riccio, Alessandro Riccio
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Patent number: 9097668Abstract: A method for detecting mentholated tobacco, comprising irradiating tobacco containing menthol and a fluorescent taggant with radiation and observing the tobacco for fluorescence from the taggant. A system and method for detecting and separating mentholated tobacco from non-mentholated tobacco within a product stream is also provided.Type: GrantFiled: September 24, 2014Date of Patent: August 4, 2015Assignee: ALTRIA CLIENT SERVICES INC.Inventor: Edmond J. Cadieux, Jr.
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Publication number: 20150122272Abstract: Methods for creating concentrated plant material solution, including combining ethanol-soluble, water-insoluble concentrated plant material with ethanol to define mixtures and reducing the amount of ethanol in the mixtures until the mixtures have viscosities compatible for use with electronic cigarettes. Some examples include combining ethanol-soluble, water-insoluble concentrated plant material, hydrocarbon bases, and liquid solutions containing ethanol to define mixtures, removing the hydrocarbon bases from the mixtures, and reducing the ethanol content of the mixtures until the mixtures define viscosities compatible for use with electronic cigarettes. Some examples include extracting solute from source materials and including the extracted solute in the ethanol-soluble, water-insoluble concentrated plant material.Type: ApplicationFiled: January 16, 2014Publication date: May 7, 2015Inventors: Jason Wasserman, Jess Ordower, Samual Decker
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Patent number: 9004074Abstract: The invention relates to methods of nicotine extraction from tobacco, caporal and tobacco crumb. The proposed method for extraction of nicotine from tobacco, caporal and tobacco crumb implies continuous extraction from raw material with low-boiling solvents at vapor phase followed by solvent stripper and recurrence for further reuse in the process.Type: GrantFiled: January 31, 2008Date of Patent: April 14, 2015Assignee: Al-Farabi Kazakh National UniversityInventors: Michail Kassymovich Nauryzbaev, Dmitri Yurievich Korulkin, Serikbol Tleulessovich Shalghymbaev, Timur Michailovich Nauryzbaev
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Patent number: 8955523Abstract: The invention provides a tobacco composition for use in a smoking article or a smokeless tobacco composition that includes an additive derived from a flower of the Nicotiana species. The additive can be a flower of the Nicotiana species or a portion thereof in particulate form or in the form of flower isolate derived from a flower of the Nicotiana species. In certain embodiments, the flower isolate is in the form of an extract from a flower of the Nicotiana species or in the form of a chemically transformed flower isolate, the chemical transformation being selected from acid/base reaction, hydrolysis, thermal treatment, and enzymatic treatment. The invention also provides smoking articles and smokeless tobacco compositions that include the flower additives described herein, and methods for preparing an additive derived from a flower of the Nicotiana species for addition to a tobacco composition.Type: GrantFiled: January 15, 2010Date of Patent: February 17, 2015Assignee: R.J. Reynolds Tobacco CompanyInventors: William Monroe Coleman, III, Michael Francis Dube, Darlene Madeline Lawson
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Patent number: 8887737Abstract: A method of forming a liquor comprising tobacco solutes, the method comprising extracting tobacco solutes from tobacco by flowing an extraction solvent through tobacco to form a tobacco solutes-rich extraction solvent and a tobacco solutes-poor tobacco, and forming tobacco solutes-rich liquor by flowing the tobacco solutes-rich extraction solvent through an entrapment solvent, wherein the tobacco solutes comprise nicotine and at least one tobacco flavor compound and/or tobacco aroma compound and the liquor comprises the tobacco solutes dissolved in the entrapment solvent. A preferred extraction solvent comprises a supercritical fluid. Also provided are cigarettes and cigarette components comprising extracted tobacco solutes such as flavor compounds, aroma compounds and nicotine. Further, tobacco from which aroma compounds and/or nicotine have been extracted can be used in cigarettes.Type: GrantFiled: July 29, 2005Date of Patent: November 18, 2014Assignee: Philip Morris USA Inc.Inventors: Tony M. Howell, Gregory J. Griscik
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Publication number: 20140261483Abstract: A kit is disclosed for supplying a cartridge of an inhaler article with liquid tobacco extract, the kit comprising an apparatus having means for extracting a liquid tobacco extract from a tobacco derived solid. The apparatus is adapted to deliver liquid tobacco extract to a cartridge and a cartridge adapted to receive liquid tobacco extract from the apparatus. An apparatus for supplying a liquid tobacco extract to a cartridge of an inhaler article is further disclosed. The apparatus has a housing, means for extracting a liquid tobacco extract from a tobacco derived solid and said housing is adapted to deliver liquid tobacco extract to a cartridge of an inhaler article. A related method of supplying a cartridge of an inhaler article with a liquid tobacco extract is further disclosed.Type: ApplicationFiled: October 26, 2012Publication date: September 18, 2014Applicant: JT International SAInventor: Jason Hopps
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Publication number: 20140251354Abstract: The present application is related to an electronic cigarette liquid and a method of producing pulp for use in the electronic cigarette liquid, the method includes: using a stainless steel bathing can with a 500 Liter capacity that can endure heating and pressurizing; placing the pulp and original liquid used for bathing inside the can at a pre-determined ratio. After heating, pressurizing and bathing, the absorption of the pulp is fully attained. Then, opening a ball valve and releasing and collecting only the liquid from the bathing can and taking out the viscous pulp for packaging. The hookah pulp product is obtained with a solid extract of the hookah pulp product being 90% or above of the hookah pulp product.Type: ApplicationFiled: October 17, 2013Publication date: September 11, 2014Inventor: Zhixuan Zheng
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Patent number: 8807142Abstract: A class of molecularly imprinted polymers that specifically recognizes and binds to nitrosamines members of which class are useful, for example, in analysis and separation of nitrosamines from biological fluids. Such molecularly imprinted polymers are also useful in methods of treating and manufacturing tobacco products and materials.Type: GrantFiled: November 21, 2006Date of Patent: August 19, 2014Assignee: British American Tobacco (Investments) LimitedInventors: Sumita Bhattacharyya, Kevin McAdam, Anthony Rees, Börje Sellergren, Christine Widstrand
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Publication number: 20140190500Abstract: Disclosed are a process and an apparatus for improving tobacco raw material. The process mainly comprises performing an extraction from at least one of tobacco leafs, tobacco flakes, tobacco powder, stalks and cut stems by mixed solvents, conducting a solid-liquid separation for the tobacco raw material, applying the extract liquor of tobacco leaves, flakes and cuts for manufacturing tobacco extract and that of stalks and cut stems for manufacturing fertilizer, diluting and mixing a given amount of tobacco aqueous extract and ethanol extract and removing harmful components so as to get feed liquid, backfilling the feed liquid to the tobacco raw material, and drying the tobacco raw material to a certain dryness to obtain the products. The apparatus is a system composed of a plurality of interconnected independent devices such as extractor, solid-liquid separator, a feed liquid backfiller, etc.Type: ApplicationFiled: January 14, 2013Publication date: July 10, 2014Applicant: Shanghai Juhua Science and Technology Co., Ltd.Inventors: Huang Duan, Xuesong Pan, Bin Liu, Jian Chen, Hongming Wang
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Publication number: 20140130815Abstract: A process for treating a tobacco material comprising: (a) extracting a tobacco material with a solvent to produce a tobacco extract and a tobacco residue; (b) contacting the tobacco extract with an antioxidant; and (c) contacting the mixture of (b) with an antioxidant scavenger, to produce a treated tobacco extract. The treated tobacco extract is reapplied to the tobacco residue to form a treated tobacco material. In addition, a smoking composition, a smoking article and a smokeless tobacco oral delivery product contain the treated tobacco material.Type: ApplicationFiled: January 17, 2014Publication date: May 15, 2014Applicant: Philip Morris USA Inc.Inventor: Marc Robert Krauss
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Publication number: 20140041675Abstract: Methods of selectively reducing constituents in tobacco as well as the tobacco obtained by such methods are disclosed. Subcritical fluids, e.g., liquid carbon dioxide, serve as the reduction media.Type: ApplicationFiled: October 11, 2013Publication date: February 13, 2014Applicants: Phasex Corporation, U.S. Smokeless Tobacco Company LLCInventors: Val KRUKONIS, Hans SCHONEMANN, Anthony GUDINAS, Paula M. WETMORE, Kara WILLIAMS, Carl H. MIDGETT, Clifford Brown BENNETT, Harry Yizhou ZHENG, Kathleen S. JOHNSTON
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Patent number: 8555895Abstract: Methods of selectively reducing constituents in tobacco as well as the tobacco obtained by such methods are disclosed. Subcritical fluids, e.g., liquid carbon dioxide, serve as the reduction media.Type: GrantFiled: September 15, 2010Date of Patent: October 15, 2013Assignees: U.S. Smokeless Tobacco Company LLC, Phasex CorporationInventors: Val Krukonis, Hans Schonemann, Anthony Gudinas, Paula M. Wetmore, Kara Williams, Carl H. Midgett, Clifford Brown Bennett, Harry Y. Zheng, Kathleen S. Johnston
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Publication number: 20130139835Abstract: A class of molecularly imprinted polymers that specifically recognizes and binds to TSNAs are useful, for example, in analysis and separation of TSNAs from biological fluids. Such polymers are also useful in methods of treating and manufacturing tobacco products and materials. Also disclosed are selectively adsorbent non-molecularly imprinted polymer of a non-acidic monomer and a cross-linker having polar functionality, one of which is hydrophilic, the other of which is hydrophobic, and the use of such polymers in the treatment of materials containing nicotine and nitrosamine.Type: ApplicationFiled: January 18, 2013Publication date: June 6, 2013Applicant: British American Tobacco (Investments) LimitedInventors: Ola John Ivar Karlsson, Johan Fredrik Billing, Ecevit Yilmaz, Jan Robert Christian Svensson Stark
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Publication number: 20130133674Abstract: A process for treating a tobacco material comprising: (a) extracting a tobacco material with a solvent to produce a tobacco extract and a tobacco residue; (b) contacting the tobacco extract with an antioxidant; and (c) contacting the mixture of (b) with an antioxidant scavenger, to produce a treated tobacco extract. The treated tobacco extract is reapplied to the tobacco residue to form a treated tobacco material. In addition, a smoking composition, a smoking article and a smokeless tobacco oral delivery product contain the treated tobacco material.Type: ApplicationFiled: January 28, 2013Publication date: May 30, 2013Applicant: PHILIP MORRIS USA INC.Inventor: PHILIP MORRIS USA INC.
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Publication number: 20130014771Abstract: The invention provides a tobacco composition for use in a smoking article or a smokeless tobacco composition that includes an additive derived from a flower of the Nicotiana species. The additive can be a flower isolate derived from a flower of the Nicotiana species. In certain embodiments, the flower isolate is in the form of an extract from a flower of the Nicotiana species or in the form of a chemically transformed flower isolate, the chemical transformation being selected from acid/base reaction, hydrolysis, thermal treatment, and enzymatic treatment, the chemical transformation releasing at least a portion of a glycosidically bound compound in the flower of the Nicotiana species. The invention also provides smoking articles and smokeless tobacco compositions that include the flower additives described herein, and methods for preparing an additive derived from a flower of the Nicotiana species for addition to a tobacco composition.Type: ApplicationFiled: July 12, 2012Publication date: January 17, 2013Inventors: William Monroe Coleman, III, Michael Francis Dube, Darlene Madeline Lawson
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Publication number: 20120199145Abstract: The invention provides a method of producing a tobacco composition for use in a tobacco product, the method including treating a tobacco pulp with supercritical carbon dioxide. The treated tobacco pulp may exhibit a benzo[a]pyrene concentration lower than the initial benzo[a]pyrene concentration and/or a TSNA concentration lower than the initial TSNA concentration. The treated pulp can be introduced into tobacco products including smoking articles, smokeless tobacco products, and aerosol-generating devices configured for non-combustion of plant materials.Type: ApplicationFiled: March 19, 2012Publication date: August 9, 2012Inventors: Crystal Dawn Hege Byrd, Yan Pu, Anthony Richard Gerardi, Charles Bradford Rhoades, JR.
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Publication number: 20120145170Abstract: A method and a system for preparing a tobacco extract for use in an electronic smoking device are provided. A tobacco extract and an electronic smoking device are also provided. The method includes grinding tobacco into granulated particles, and heating purified water. The method further includes injecting the heated purified water through the granulated particles of the tobacco for a predetermined period of time to produce an aqueous solution, and adding purified water to the aqueous solution. Further, the method includes heating the aqueous solution, and injecting the heated aqueous solution through ground tobacco for the predetermined period of time to produce a tobacco extract for use in the electronic smoking device.Type: ApplicationFiled: February 15, 2012Publication date: June 14, 2012Applicant: GLOBAL VAPOR TRADEMARKS, INC.Inventor: Thomas O'Connell
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Patent number: 8011373Abstract: A method of treating a tobacco extract solution includes bringing an extract solution, which is obtained by extracting a natural tobacco material with an aqueous extracting solvent, into contact with a polymer containing, in its side chain, a functional group which traps metal ions including at least magnesium, thereby obtaining an extract solution with an amount of at least magnesium reduced.Type: GrantFiled: February 8, 2007Date of Patent: September 6, 2011Assignee: Japan Tobacco Inc.Inventors: Koji Torikai, Hiromichi Muto
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Publication number: 20110174323Abstract: The invention provides a tobacco composition for use in a smoking article or a smokeless tobacco composition that includes an additive derived from a flower of the Nicotiana species. The additive can be a flower of the Nicotiana species or a portion thereof in particulate form or in the form of flower isolate derived from a flower of the Nicotiana species. In certain embodiments, the flower isolate is in the form of an extract from a flower of the Nicotiana species or in the form of a chemically transformed flower isolate, the chemical transformation being selected from acid/base reaction, hydrolysis, thermal treatment, and enzymatic treatment. The invention also provides smoking articles and smokeless tobacco compositions that include the flower additives described herein, and methods for preparing an additive derived from a flower of the Nicotiana species for addition to a tobacco composition.Type: ApplicationFiled: January 15, 2010Publication date: July 21, 2011Inventors: William Monroe Coleman, III, Michael Francis Dube, Darlene Madeline Lawson
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Publication number: 20110155152Abstract: This invention provides a method for removing undesirable constituents from tobacco which includes extracting tobacco material in an aqueous or organic solvent and filtering the product of the extraction using a horizontal belt filter. The extract and insoluble tobacco residue may be further treated enzymically, chemically or otherwise to remove a complement of undesirable constituents. The extract and insoluble tobacco residue are recombined to form a regenerated tobacco material that is less harmful when combusted than the original material.Type: ApplicationFiled: May 28, 2009Publication date: June 30, 2011Inventors: Alan Harris, Steve Hemsley
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Publication number: 20110159160Abstract: A method for extracting a polycyclic aromatic hydrocarbon from a material such as tobacco or tobacco extracts or other materials comprises treating the material with a molecularly imprinted polymer selective for the hydrocarbon in the presence of a low polarity medium.Type: ApplicationFiled: June 26, 2009Publication date: June 30, 2011Inventors: Stig Jonsson, Staffan Bergstrom, Johan Billing
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Patent number: 7934509Abstract: The invention relates to a method of producing cut tobacco material, whereby a tobacco initial material is heated and placed under pressure and once heated and placed under pressure, the material is fed through a shearing gap and expanded and defibrated. It further relates to a device for producing cut tobacco material with a pressure chamber, which has a tobacco material inlet at the low-pressure end and a tobacco material outlet at the pressure end and a conveyor system for conveying the tobacco material from the inlet to the outlet, and the tobacco material outlet has a gap through which the material passes and expands, and the gap has walls which can be moved towards one another. It further relates to a smoking article containing such a cut, defibrated tobacco material product and the use of a plug screw feeder-extruder with a shearing gap outlet for defibrating tobacco material.Type: GrantFiled: November 28, 2005Date of Patent: May 3, 2011Assignee: British American Tobacco (Germany) GmbHInventors: Uwe Werner Ehling, Gerald Schmekel, Dietmar Franke, Matthias Link
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Publication number: 20110067715Abstract: Methods of selectively reducing constituents in tobacco as well as the tobacco obtained by such methods are disclosed. Subcritical fluids, e.g., liquid carbon dioxide, serve as the reduction media.Type: ApplicationFiled: September 15, 2010Publication date: March 24, 2011Applicants: US Smokeless Tobacco Co., Phasex CorporationInventors: Val Krukonis, Hans Schonemann, Anthony Gudinas, Paula M. Wetmore, Kara Williams, Carl H. Midgett, Clifford Brown Bennett, Harry Y. Zheng, Kathleen S. Johnston
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Publication number: 20110041859Abstract: A class of molecularly imprinted polymers that specifically recognizes and binds to TSNAs are useful, for example, in analysis and separation of TSNAs from biological fluids. Such polymers are also useful in methods of treating and manufacturing tobacco products and materials.Type: ApplicationFiled: November 26, 2007Publication date: February 24, 2011Inventors: Anthony Rees, Johan Billing, Ecevit Yilmaz
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Patent number: 7798151Abstract: Methods of selectively reducing constituents in tobacco as well as the tobacco obtained by such methods are disclosed. Subcritical fluids, e.g., liquid carbon dioxide, serve as the reduction media.Type: GrantFiled: July 18, 2003Date of Patent: September 21, 2010Assignees: US Smokeless Tobacco Co., Phasex CorporationInventors: Val Krukonis, Hans Schonemann, Anthony Gudinas, Paula M. Wetmore, Kara Williams, Carl H. Midgett, Clifford Brown Bennett, Harry Y. Zheng, Kathleen S. Johnston
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Patent number: 7677253Abstract: A regenerated tobacco material is manufactured through extracting a natural tobacco material with an extracting solvent to obtain an extracted solution containing components of the natural tobacco material and an extraction residue. A regenerated tobacco web is prepared by using the extraction residue. On the other hand, the extracted solution is subjected to a fractionating treatment by means of ultrafiltration, reverse osmosis filtration, or reversed-phase partition chromatography to obtain a first fraction enriched in desired components and depleted in undesired components, and a second fraction enriched in the undesired components and depleted in the desired components. The first fraction is added, optionally together with the second fraction decreased in amount, to the regenerated tobacco web to prepare a regenerated tobacco material.Type: GrantFiled: November 3, 2005Date of Patent: March 16, 2010Assignee: Japan Tobacco Inc.Inventors: Yoshiyuki Yamada, Yukiko Hasegawa
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Publication number: 20080302377Abstract: The invention relates to methods of nicotine extraction from tobacco, caporal and tobacco crumb. The proposed method for extraction of nicotine from tobacco, caporal and tobacco crumb implies continuous extraction from raw material with low-boiling solvents at vapor phase followed by solvent stripper and recurrence for further reuse in the process. The technological advantages are the opportunity to use both primary raw material and production wastes, shorter time required for extraction, cost reduction and process simplification for extraction of nicotine, reduction of concomitant substances in the target product, and no need in using acids. These advantages are achieved by the proposed extraction method with low-boiling organic solvents what results in lower consumption of chemicals, lower temperature, shorter time required for the process and additional purification of the target product and eliminates needs for high pressure to be used in technological process.Type: ApplicationFiled: January 31, 2008Publication date: December 11, 2008Inventors: Michail Kassymovich Nauryzbaev, Dmitri Yurievich Korulkin, Serikbol Tleulessovich Shalghymbaev, Timur Michailovich Nauryzbaev
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Publication number: 20080178894Abstract: Methods for the selective removal of specific constituents of tobacco extract include contacting an extract with a nitrosamine selective adsorption agent, a metal selective adsorption agent and/or a nitrate selective adsorption agent. Preferred characteristics of such agents are identified.Type: ApplicationFiled: January 26, 2007Publication date: July 31, 2008Applicant: Philip Morris USA Inc.Inventor: Stephen G. Zimmermann
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Patent number: 7387128Abstract: The invention relates to a continuous method for pressure-conditioning material for food and/or semi-luxury consumables, wherein said material (12) is introduced through an entrance (4) into a hyperbarically pressurized conditioning chamber (2), where it is treated with a conditioning agent, and extracted again from said conditioning chamber (2) at an exit (8), wherein the material (12) is conveyed continuously from said entrance (4) to said exit (8) in a conditioning chamber (2) inclined obliquely upwards, by means of a mixing conveyor, in particular a conveying screw (3).Type: GrantFiled: December 13, 2004Date of Patent: June 17, 2008Assignee: British American Tobacco (Germany) GmbHInventors: Uwe Werner Ehling, Gerald Schmekel, Frank Plückhahn, Hans-Werner Fuchs, Matthias Link
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Patent number: 7380554Abstract: The invention relates to a continuous method for pressure-conditioning material for food and/or semi-luxury consumables, wherein said material (12) is introduced through an entrance (4) into a hyperbarically pressurized conditioning chamber (2), where it is treated with a conditioning agent, and extracted again from said conditioning chamber (2) at an exit (8), wherein the material (12) is conveyed continuously from said entrance (4) to said exit (8) in a conditioning chamber (2) inclined obliquely upwards, by means of a mixing conveyor, in particular a conveying screw (3).Type: GrantFiled: February 5, 2004Date of Patent: June 3, 2008Assignee: British American Tobacco (Germany) GmbHInventors: Uwe Werner Ehling, Gerald Schmekel, Frank Plückhahn, Hans-Werner Fuchs, Matthias Link
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Patent number: 7337782Abstract: A process is disclosed for removing proteins and other undesirable biomolecules from tobacco extract or slurry via foam fractionation, thereby concentrating the tobacco extract or slurry. The tobacco extract or slurry is treated and modified prior to being subjected to the foam fractionation to enhance the extent and efficiency of protein removal. After foam fractionation, the concentrated extract, sans proteins and other Hoffman analyte precursors, is applied to a tobacco sheet material, and the collected foam can be recirculated through foam fractionation for enhanced concentration.Type: GrantFiled: August 18, 2004Date of Patent: March 4, 2008Assignee: R.J. Reynolds Tobacco CompanyInventor: Bruce T. Thompson
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Patent number: 6786221Abstract: A process and system for continuous assay and removal of toxins from tobacco. Products such as tobacco contaminated with mycotoxins, particularly aflatoxins, and benzpyrene and its precursors, are subjected to treatment, generally in a solvent medium, to decontaminate the tobacco of the toxin. Continuous monitoring of all harmful toxins eluted from the cleaning solvent is performed by immunoantibody ultraviolet fluorescence, for example. A quality-control process ensures removal of harmful toxins from tobacco before further processing. Decontamination of extracted solvent streams and re-additives ensures safe reuse or disposal of the solvents and re-additives.Type: GrantFiled: March 23, 2004Date of Patent: September 7, 2004Inventor: Kerry Scott Lane
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Publication number: 20040134504Abstract: A process and system for continuous assay and removal of toxins from tobacco. Products such as tobacco contaminated with mycotoxins, particularly aflatoxins, and benzpyrene and its precursors, are subjected to treatment, generally in a solvent medium, to decontaminate the tobacco of the toxin. Continuous monitoring of all harmful toxins eluted from the cleaning solvent is performed by immunoantibody ultraviolet fluorescence, for example. A quality-control process ensures removal of harmful toxins from tobacco before further processing. Decontamination of extracted solvent streams and re-additives ensures safe reuse or disposal of the solvents and re-additives.Type: ApplicationFiled: March 23, 2004Publication date: July 15, 2004Inventor: Kerry Scott Lane
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Patent number: 6679270Abstract: A method for reducing the content of nitrosamines (e.g., N′-Nitrosonornicotine, 4-(Methylnitrosamino)-1-(3-pyridyl)-1-butanone, N′-Nitrosoanatabine, and N′-Nitrosoanabasine) in tobacco is provided. In one embodiment, the method includes combining tobacco with a solvent (e.g., water and/or other compounds) to form a soluble portion. The soluble portion contains an initial total level of tobacco-specific nitrosamines per gram of the soluble portion. The soluble portion is contacted with a nitrosamine-reducing material such that the resulting weight percentage of the tobacco-specific nitrosamines per gram of said soluble portion is at least about 20% less than the initial total level of the tobacco-specific nitrosamines per gram of the soluble portion.Type: GrantFiled: October 3, 2001Date of Patent: January 20, 2004Inventors: Nicolas Baskevitch, Lanig Le Bec, Diane Raverdy-Lambert
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Patent number: 6224847Abstract: A process for extracting a compound or composition of matter from a raw material containing that compound or composition as a constituent part is disclosed. The process comprises the steps of (1) contacting a sample of the raw material with an extraction solvent comprising 1,1,1,2-tetrafluoroethane and a co-solvent selected from an alkane and a hydrocarbon ether, (2) forming a solvent liquor comprising the extraction solvent and an extract from the raw material, and (3) separating the solvent liquor containing the extract from the raw material.Type: GrantFiled: January 31, 1997Date of Patent: May 1, 2001Assignee: Imperial Chemical Industries PLCInventors: Richard Llewellyn Powell, Timothy James Noakes, Peter Frederick Wilde
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Patent number: 6058940Abstract: A process and system for continuous assay and removal of toxins from tobacco. Products such as tobacco contaminated with mycotoxins, particularly aflatoxins, and benzpyrene and its precursors, are subjected to treatment, generally in a solvent medium, to decontaminate the tobacco of the toxin. Continuous monitoring of all harmful toxins eluted from the cleaning solvent is performed by immunoantibody ultraviolet fluorescence, for example. A quality-control process ensures removal of harmful toxins from tobacco before further processing. Decontamination of extracted solvent streams and re-additives ensures safe reuse or disposal of the solvents and re-additives.Type: GrantFiled: March 2, 1998Date of Patent: May 9, 2000Inventor: Kerry Scott Lane
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Patent number: 5947128Abstract: A process to improve the smoke quality and mechanical properties of reconstituted tobacco is accomplished by adding tobacco materials to an aqueous solution containing ammonium salts and urea. The resulting first tobacco slurry is then pressurized under steam pressure to at least 60 psi for a period of from 1 to 5 minutes then depressurized rapidly to ambient. The depressurized tobacco is then formed into a second tobacco slurry wherein the soluble components within the tobacco is removed. The resulting tobacco residue is then prepared into a reconstituted tobacco sheet and the extract is then concentrated to a solids level of at least 30 percent by weight of solids which is added back to the reconstituted tobacco sheet for further processing into smoking articles.Type: GrantFiled: December 8, 1997Date of Patent: September 7, 1999Assignee: Brown & Williamson Tobacco CorporationInventor: Jide Adedeji
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Patent number: 5908034Abstract: A process for improving smoke quality and mechanical properties of a cast reconstituted tobacco sheet is accomplished by adding tobacco materials to an aqueous solution containing ammonium salts and ammonium hydroxide. The resulting first tobacco slurry is then pressurized under steam pressure to at least 60 psi for a period of from about 1 to 5 minutes then depressurized rapidly to ambient. The depressurized tobacco is then formed into a second tobacco slurry. The resulting tobacco residue is then cast into a reconstituted tobacco sheet for further processing into smoking articles.Type: GrantFiled: December 8, 1997Date of Patent: June 1, 1999Assignee: Brown & Williamson Tobacco CorporationInventor: Jide Adedeji
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Patent number: 5829449Abstract: A composition for inclusion within a cigarette, cigar or pipe. The composition can be included within the tobacco itself, a filter for filtering tobacco smoke once burned or even within the paper or wrapper surrounding the tobacco product. The composition is capable of reducing free radical damage to the oro-pharyngeal cavity, respiratory tract and lungs resulting from tobacco smoke. The composition includes L-glutathione and a source of selenium such as selenomethionine.Type: GrantFiled: September 19, 1997Date of Patent: November 3, 1998Assignee: Thione International, Inc.Inventors: Theodore Hersh, Rebecca Hersh
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Patent number: 5810020Abstract: There is disclosed a process for denitrifying tobacco materials and removing barium from tobacco materials, comprising mixing an aqueous-immiscible organic solvent containing a crown ether with an aqueous solution containing soluble components from tobacco materials, agitating this mixture, and separating the organic phase containing a crown ether-cation-nitrate (or nitrite) complex from the aqueous phase containing the denitrified tobacco materials, wherein the cation consists essentially of barium and potassium. There is further disclosed a process for eliminating tobacco-specific nitrosamines (TSNAs) from cured, denitrified tobacco material, comprising contacting the denitrified tobacco material with a trapping sink, wherein the trapping sink comprises a select transition metal complex which is readily nitrosated to form a nitrosyl complex with little kinetic or thermodynamic hindrance.Type: GrantFiled: September 7, 1993Date of Patent: September 22, 1998Assignee: Osmotek, Inc.Inventors: Steven Northway, Robert Salter
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Patent number: 5791353Abstract: The invention relates to a method of denitrating tobacco stem material in which the tobacco stem material is input at a first point in a housing, guided through a solvent and output at a second point from the housing, the complete method being implemented at an overpressure, and to an apparatus for implementing the method with an elongated, approximately cylindrical housing and at least one rotatable feeder screw, said housing being configured pressure-tight and comprising locks or nozzles or inputting and/or outputting process flows.Type: GrantFiled: September 12, 1996Date of Patent: August 11, 1998Assignee: Brown & Williamson Tobaccco CorporationInventors: Gitta Junemann, Gerald Schmekel, Arno Weiss, Wilfried Stiller
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Patent number: 5601097Abstract: The invention provides a method for reducing the protein content of tobacco material which includes either: (1) extracting the tobacco material with an anionic surfactant; (2) treating the tobacco material with a proteolytic enzyme followed by extraction with a surfactant; (3) applying a surfactant solution to the tobacco material, separating the solution from the tobacco material, removing the surfactant and polypeptides from the tobacco material, optionally with the use of an insoluble adsorbent, and combining the tobacco material with the remaining solution; or (4) first extracting the tobacco material with an aqueous solvent and then with a surfactant. The invention further provides a tobacco material of reduced protein content produced by extraction with an anionic surfactant.Type: GrantFiled: January 6, 1993Date of Patent: February 11, 1997Assignee: Imasco LimitedInventors: Yves D. De Grandpre, Minoo H. Bilimoria, Andrew R. Porter
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Patent number: 5501237Abstract: Reconstituted tobacco having good wet strength is provided. Tobacco material is extracted with water to yield an insoluble portion and an aqueous portion containing water soluble tobacco components. The insoluble portion is formed into a sheet-like shape and contacted with a pectin release agent. Alternatively, the insoluble portion is contacted with pectin release agent and then formed into a sheet-like shape. The extract then is applied to the insoluble portion which has been formed into a sheet-like shape. The resulting tobacco composition is dried to yield a reconstituted tobacco material.Type: GrantFiled: September 30, 1991Date of Patent: March 26, 1996Assignee: R. J. Reynolds Tobacco CompanyInventors: Harvey J. Young, Edward J. S. Sohn
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Patent number: 5497792Abstract: A process is provided for the improved removal of nicotine from tobacco. An essentially nicotine-free solvent in the supercritical or liquid state is fed into a first end of an extraction flow system containing tobacco and a nicotine-rich solvent is discharged from a second end of the extraction flow system. Periodically a portion of extracted tobacco is discharged from the first end of the extraction system while simultaneously a portion of an unextracted tobacco is charged to the second end of the extraction system. Nicotine is then entrapped in an entrapment material or otherwise removed from the solvent and solvent is recycled through the extraction flow system. Various materials are provided as entrapment materials. Among the entrapment materials provided are aqueous solutions containing absorbent selected from various acids and salts.Type: GrantFiled: November 19, 1987Date of Patent: March 12, 1996Assignee: Philip Morris IncorporatedInventors: Ravi Prasad, Harvey J. Grubbs
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Patent number: 5445169Abstract: Tobacco extracts are provided within a polyhydric alcohol carrier. Tobacco strip is extracted with ammonia and steam to provide a mixture of water, tobacco extract and ammonia. The mixture is contacted with a polyhydric alcohol to provide a resulting mixture. The water then is evaporated from the resulting mixture to provide a mixture of 30 weight parts tobacco extract, 65 weight parts polyhydric alcohol and 5 weight parts water.Type: GrantFiled: August 17, 1992Date of Patent: August 29, 1995Assignee: R. J. Reynolds Tobacco CompanyInventors: Paul A. Brinkley, Jack G. Flinchum, Jr., James S. Thomasson