US3370592A - Indicating cigarette filter - Google Patents

Indicating cigarette filter Download PDF

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Publication number
US3370592A
US3370592A US507353A US50735365A US3370592A US 3370592 A US3370592 A US 3370592A US 507353 A US507353 A US 507353A US 50735365 A US50735365 A US 50735365A US 3370592 A US3370592 A US 3370592A
Authority
US
United States
Prior art keywords
filter
plug
smoke
cigarette
indicator
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US507353A
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English (en)
Inventor
Frederick J Schultz
Clifford O Jensen
Albert B Hudson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
P Lorillard Co
Original Assignee
P Lorillard Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by P Lorillard Co filed Critical P Lorillard Co
Priority to US507353A priority Critical patent/US3370592A/en
Priority to CH1456166A priority patent/CH462692A/fr
Priority to NL6614994A priority patent/NL6614994A/xx
Priority to GB49280/66A priority patent/GB1093710A/en
Priority to DK575366AA priority patent/DK130135B/da
Priority to DE19661692926 priority patent/DE1692926A1/de
Priority to BE689521D priority patent/BE689521A/xx
Priority to FR83335A priority patent/FR1515992A/fr
Priority to SE15385/66A priority patent/SE341975B/xx
Priority to LU52346D priority patent/LU52346A1/xx
Application granted granted Critical
Publication of US3370592A publication Critical patent/US3370592A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N31/00—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
    • G01N31/22—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using chemical indicators
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/04—Tobacco smoke filters characterised by their shape or structure

Definitions

  • Filters in cigarette and cigar holders and filter tips for cigarettes have been used for many years, and, in recent years, their use has become widespread for the reason that they are recognized as having the capability of removing tars and other condensable components of tobacco smoke thought to be harmful.
  • Reagents and absorbents of various kinds have been included in such filters to remove other components from the tobacco smoke while enabling the flavor and aroma-containing components of the smoke to pass through the filters. None of these filters or filter tips indicates the amount of the unwanted components which are removed from the smoke except for a brownish, tarry appearing discoloration at the end of the filter tip or in the filter, if used in a cigar or cigarette holder. Accordingly, the smoker is not informed as to the condition of the filter in the cigarette and particularly whether the filter is removing unwanted components.
  • filters for cigarette and cigar holders and particularly filter tips for ci arettes, little cigars, cigarillos and the like are provided with readily visible means for indicating, by a change of color, the absorption of unwanted components, such as, for example, aldehydic, acidic or basic (alkaline) components, by the filter medium.
  • unwanted components such as, for example, aldehydic, acidic or basic (alkaline) components
  • filter tips for cigarettes are provided with an absorptive and filtering medium visible through a Window or opening in the filter tip and impregnated with an indicator which changes color when the filter has absorbed a significant amount of such components as the aldehydic or acidic components of tobacco smoke
  • the filter medium may be treated with a reagent which changes or converts the unwanted component to a harmless component and after the added reagent has been utilized, a
  • the filter medium in the filter tip may be treated with a carbonyl-sensitive indicator, such as, for example, the triphenylmethane dyes, which are useful for indicating the presence of aldehydes, or an acid-base indicator, which indicates an acidic or basic state.
  • the filter medium carrying the indicator may be impregnated with a reagent, such as, for example, sodium bisulfite, which converts aldehydes to non-volatile compounds, or with a mild base, such as sodium bicarbonate, which reacts with the acidic components and removes a part of them from the cigarette smoke.
  • a reagent such as, for example, sodium bisulfite, which converts aldehydes to non-volatile compounds
  • a mild base such as sodium bicarbonate
  • FIGURE 1 is a schematic illustration of the preparation of a filter tip of the kind embodying the present invention for a cigarette.
  • FIGURE 2 is a perspective view of a completed cigarette having the filter tip attached thereto.
  • the filtering medium in the form of rods having a paper Wrapping thereon, the rods being equal in length to a plurality of filters or filter sections, for example, six such filters or filter sections.
  • the rods are cut into appropriate lengths and separated into rows by means of known machines, such as, for example, the machine shown in the Brown et al. Patent No. 3,165,953 dated Jan. 19, 1965, and then attached to the ends of cigarettes and secured thereon with a Wrapping of tipping paper.
  • a filter rod 16 which may be suitably composed of a mass 11 of fibers, such as alpha cellulose fibers, mixtures of mineral and cellulosic fibers, and the like, and with a paper wrapping 12 thereon, is supplied in lengths corresponding with a plurality of filter sections or plugs.
  • the rod 10 is equal to three sections or plugs for a dual filter, although its length may correspond to six or any other desired number.
  • a plug 13 of the paper wrapped filter material is to be assembled with a plug 14 of another filter material cut from a rod 15 which has a wrapping of transparent material 16, such as cellophane or the like, enclosing the filter material 17.
  • the filter material 17 may be suitably formed of crimped, absorbent crepe-like paper of the type commonly used in cigarette filters and which is quite porous and fragile and, when compressed or rolled into a rod-like form, is porous and absorbent.
  • This paper is impregnated with a suitable indicator which changes color in the presence of a predetermined concentration of an unwanted component of tobacco smoke.
  • the paper rod maybe impregnated with an indicator in the manner disclosed in the following examples.
  • Example I A solution of 0.4 gm. of malachite green oxalate in 500 ml. of water is adjusted to a pH of 3 by the addition of oxalic acid. The solution is then decolorized by adding 15 gms. of sodium bisulfite and stirring for 30 minutes. The resulting precipitate is removed by filtration and discarded. Two hundred fifty ml. of propylene glycol are added along with 5 grns. of the tetra sodium salt of ethylenediamine tetraacetic acid. The solution is then made to final volume by the addition of 250 ml. of water and the pH is adjusted to 7.2 by the addition of approximately 5 grns. of sodium carbonate.
  • Example II Pararosaniline acetate can be substituted for malachite green oxalate in Example I.
  • the result is a pale pink filter section which on contact and reaction with the aldehydes in cigarette smoke turns to a reddish purple color.
  • Example lII.Rosaniline acetate can be substituted for pararosaniline acetate in Example II with similar results.
  • Formulations very similar to these cited in the above examples can be used with other salts of the triphenylmethane dyes mentioned, that is, one may use malachite green hydrochloride or malachite green acetate rather than the oxalate salt used in the illustration. In like manner, one may use various salts of pararosaniline or rosaniline with similar final results.
  • acid-base indicators Another group of compounds suitable for use as color change reagents in cigarette filters is that group generally known as acid-base indicators. These are compounds of a variety of chemical classes whose color depends upon the acidity or basicity of the medium in which they find themselves. For example, litmus in an acid medium is pink, whereas in analkaline medium it is blue.
  • Some members of the acid-base indicator group of compounds do, however, have brilliant colors and give good distinct color changes.
  • the color change of each of these compounds occurs in a certain pH range or at a certain degree of acidity o'r basicity.
  • the pH range is a characteristic of the particular compound and the compounds available cover the entire range from strongly acidic (low pH) to strongly basic (high pH).
  • these materials individually, they may be used in various combinations with one another as a means of arriving at the desired initial and final colors and/or as a means of having the color change take place in the desired pH range.
  • Cigarette smoke contains both acids and bases, and the overall pH is about 5. If the indicating filter is poised at a low pH, then the smoke is alkaline with respect to this filter.
  • Example lV.-A solution of 2 gms. of 1-(2,4dinitrophe'nylaz'o)-2-naphthol-4-sulfonic acid sodium salt in 500 ml. of water is adjusted to a pH of 11.1 by the addition of approximately 12.5 gms. of sodium bicarbonate.
  • This solution is sprayed onto creped paper filter material during the filter rod making process.
  • the rods thus formed are combined with cellulose acetate fiber filter rods and attached to cigarettes as described hereinafter.
  • the paper filter section changes color from blue to yellow due to the absorption and reaction of acidic material from the smoke.
  • Example V Two grams of brilliant yellow dissolved in 500 ml. of a saturated solution of sodium bicarbonate and followed by the addition of 500 ml. of ethylene glycol gives a reagent which when applied as noted in Example 1V produces a color change from bright red to yellow. This change occurs in the pH range 7.9-6.6 which requires that a rather large amount of sodium bicarbonate must have been reacted with acidic materials in the smoke 'be fore the initial pH of about 12 could be lowered to the color change range. Analytical data on the smoke from cigarettes having sodium bicarbonate in their filters does, in fact, show a marked reduction in the amounts of the volatile acids in the smoke.
  • Example VI.-A solution of bromocresol green (50 mg./5O ml. of water) containing 15 ml. of ethylene glycol and enough citric acid to lower its pH to 3.0 can be applied to a filter section as stated above to give a product which on smoking changes from yellow to green due to 4 I t the basic components of the smoke raising the pH of the filter to a value above 5.4.
  • this reagent is incorporated into a cigarette filter as stated above, the resulting filter changes from purple to green during smoking. This change occurs when the filter has absorbed enough acids to lower its pH to approximately 7.5.
  • sodium bicarbonate when present, neutralizes acidic components of tobacco smoke.
  • the initial color of the filter material will remain until the sodium bicarbonate has been neutralized by the acidic components, whereupon the filter material changes color.
  • the plugs .13 and 14 are brought into end-to-end relation, and both of them are wrapped with a transparent film 18, such as, for example, transparent cellophane or other transparent plastic material which may be heat-sealed to retain the plugs 13 and 14 together.
  • a transparent film 18 such as, for example, transparent cellophane or other transparent plastic material which may be heat-sealed to retain the plugs 13 and 14 together.
  • the dual filter is then attached to the end of a cigarette 19 by means of tipping paper 20, in the usual way, with the exception that the paper is provided with an opening 21 which overlies the filter plug 14 so that the filling or filtering material 17 therein is visible through the overlapping layers of transparent material 16 and 18.
  • the completed filter as shown in FIG- URE 2 accordingly includes a window or opening 21 in the dual filter tip 22 afiixed to one end of the cigarette 19.
  • the smoke travels first through the filter section 14 and components in the smoke are absorbed by this filter plug. Additional components are removed by the filter plug section 13 which generally has a more efiiective filtering action on the tarry and large particulate components of the smoke because its fibrous filler provides a multiplicity of extremely small and labyrinthine passages therethrough.
  • the amount of aldehydic acidic or basic components can, of course, be reduced in the smoke by the inclusion of reagents of the type referred to above which further delay the color change of the indicator. In this way, the cigarette filter gives a clear and visible indication to the smoker of the effective.
  • the filter may be formed of other fibrous material, although the crepe paper is preferred because of its ability to absorb and retain the indicator and other reagents as compared with other fibers which cannot be impregnated as readily with the indicators.
  • a filter for tobacco products comprising a plug of porous absorbent material containing an indicator additive incorporated therein which changes color in the presence of a significant amount of a selected component of tobacco smoke, a transparent wrapper around said plug and a wrapper of substantially opaque paper overlying said transparent wrapper and having an opening therein for viewing said plug and the change of color thereof.
  • a dual filter for cigarettes and the like comprising a first plug of porou absorbent material containing an indicator additive incorporated therein which changes color in the presence of a significant concentration of a selected component of tobacco smoke, a second plug of porous filtering material in end-to-end engagement with said first plug, a transparent wrapping enclosing said plugs and a paper wrapping overlying said transparent wrapping and having an opening therein overlying and exposing a portion of said first plug to view.
  • a method of making and attaching a filter tip to a cigarette and the like comprising assembling a first plug of porous filtering material in end-to-end relation to a second plug of porous filtering material containing an indicator which changes color in the presence of a significant concentration of a component of tobacco smoke, both of said plugs having wrappings confining said filtering material, the Wrapping of said second plug being transparent, wrapping both of said plugs in a transparent Wrapper and attaching said wrapped plugs to the end of a cigarette with tipping paper containing an opening overlying said second plug to expose a portion thereof to view.
  • said indicator is an acid-base indicator which change color in the presence of an acid.

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  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Molecular Biology (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Biophysics (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)
  • Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
US507353A 1965-11-12 1965-11-12 Indicating cigarette filter Expired - Lifetime US3370592A (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
US507353A US3370592A (en) 1965-11-12 1965-11-12 Indicating cigarette filter
CH1456166A CH462692A (fr) 1965-11-12 1966-10-10 Filtre pour des produits à base de tabac et procédé pour sa fabrication
NL6614994A NL6614994A (xx) 1965-11-12 1966-10-21
GB49280/66A GB1093710A (en) 1965-11-12 1966-11-03 Tobacco smoke filters
DK575366AA DK130135B (da) 1965-11-12 1966-11-04 Filter til tobaksprodukter eller til cigaret- eller cigarrør.
DE19661692926 DE1692926A1 (de) 1965-11-12 1966-11-09 Filter fuer Tabakrauch
BE689521D BE689521A (xx) 1965-11-12 1966-11-09
FR83335A FR1515992A (fr) 1965-11-12 1966-11-10 Nouveau bout filtrant pour cigarette
SE15385/66A SE341975B (xx) 1965-11-12 1966-11-10
LU52346D LU52346A1 (xx) 1965-11-12 1966-11-11

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US507353A US3370592A (en) 1965-11-12 1965-11-12 Indicating cigarette filter

Publications (1)

Publication Number Publication Date
US3370592A true US3370592A (en) 1968-02-27

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Application Number Title Priority Date Filing Date
US507353A Expired - Lifetime US3370592A (en) 1965-11-12 1965-11-12 Indicating cigarette filter

Country Status (10)

Country Link
US (1) US3370592A (xx)
BE (1) BE689521A (xx)
CH (1) CH462692A (xx)
DE (1) DE1692926A1 (xx)
DK (1) DK130135B (xx)
FR (1) FR1515992A (xx)
GB (1) GB1093710A (xx)
LU (1) LU52346A1 (xx)
NL (1) NL6614994A (xx)
SE (1) SE341975B (xx)

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3807286A (en) * 1972-10-04 1974-04-30 Brown & Williamson Tobacco Multiple filter having a loose granule section with perforated inner wrapper
US4015610A (en) * 1974-02-04 1977-04-05 Baumgartner Papiers S.A. Cigarette filter tip
US4161181A (en) * 1977-03-16 1979-07-17 Larry King Smoke filtering ashtrays
US4164231A (en) * 1977-07-14 1979-08-14 Jonas Greenwald Apparatus for controlling the length of cigarette to be smoked
US4185645A (en) * 1975-12-08 1980-01-29 F. J. Burrus & Cie Production of cigarette filter units
US4223597A (en) * 1976-11-26 1980-09-23 Baumgartner Papiers S.A. Method of the production of cigarette filters
US4306576A (en) * 1979-08-13 1981-12-22 Suk Moon Cigarette filter
EP1252832A2 (de) * 2001-04-23 2002-10-30 Hauni Maschinenbau AG Filter und Verfahren zur Herstellung von Filtern
US20050066982A1 (en) * 2003-09-30 2005-03-31 Clark Melissa Ann Filtered cigarette incorporating an adsorbent material
EP1541044A1 (en) * 2002-09-19 2005-06-15 Japan Tobacco Inc. Filter for cigarette
US20060150991A1 (en) * 2003-02-04 2006-07-13 Hyung Lee Transparent extraction filter cigarette
US20080230079A1 (en) * 2007-03-21 2008-09-25 Philip Morris Usa Inc. Multi-component filter providing improved flavour enhancement
WO2009106374A1 (en) * 2008-02-27 2009-09-03 British American Tobacco (Investments) Limited Filter for a smoking article
US20090293894A1 (en) * 2008-06-02 2009-12-03 Philip Morris Usa Inc. Smoking article with transparent section
WO2011154246A1 (en) * 2010-06-07 2011-12-15 British American Tobacco (Investments) Limited Wrapper for a smoking article
US20120240948A1 (en) * 2009-09-30 2012-09-27 Tannpapier Gmbh Method for producing a mouthpiece cover of a cigarette
US8360074B2 (en) 2009-06-12 2013-01-29 British American Tobacco (Investments) Limited Smoking article
WO2013160671A1 (en) * 2012-04-25 2013-10-31 British American Tobacco (Investments) Limited Smoking articles
US8616219B2 (en) 2009-12-31 2013-12-31 British American Tobacco (Investments) Limited Filter for a smoking article
US8739802B2 (en) 2006-10-02 2014-06-03 R.J. Reynolds Tobacco Company Filtered cigarette
US20140326259A1 (en) * 2011-11-07 2014-11-06 Philip Morris Prodcuts S.A. Smoking article comprising menthol
EP2949225A1 (en) 2014-05-27 2015-12-02 Reemtsma Cigarettenfabriken GmbH Smoking article
US9491971B2 (en) 2005-12-13 2016-11-15 Philip Morris Usa Inc. Specifically-defined smoking article with activated carbon sorbent and sodium bicarbonate-treated fibers and method of treating mainstream smoke
US20170325497A1 (en) * 2014-12-24 2017-11-16 Philip Morris Products S.A. Aerosol-generating article comprising a transparent tube
CN111213056A (zh) * 2017-10-19 2020-05-29 莱战略控股公司 气溶胶递送装置的比色气溶胶和气体检测
US20210378290A1 (en) * 2020-06-04 2021-12-09 R.J. Reynolds Tobacco Company Paper sheet filter element for a smoking article, and associated method

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2462820A1 (en) * 2010-12-10 2012-06-13 Philip Morris Products S.A. Smoking article having outer wrapper with cut-out portion
CA2993121A1 (en) * 2015-07-22 2017-01-26 Jt International Sa Smoking article
CN109907364A (zh) * 2019-04-15 2019-06-21 云南中烟工业有限责任公司 一种可感应乙醇蒸汽的烟支
CN109975284A (zh) * 2019-04-15 2019-07-05 云南中烟工业有限责任公司 一种乙醇蒸汽感应微芯片及包含其的烟嘴和烟支

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE641687C (de) * 1935-07-27 1937-02-10 A Scheufelen Dr Papierzigarrenspitze mit vom Spitzenmantel gebildeter, stellenweise durchsichtiger Filterkammer
US2815760A (en) * 1951-12-24 1957-12-10 Schreus Hans Theo Tobacco smoke filter
US3194246A (en) * 1963-09-18 1965-07-13 Mantchev Marco Ivanov Cigarette holder

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE641687C (de) * 1935-07-27 1937-02-10 A Scheufelen Dr Papierzigarrenspitze mit vom Spitzenmantel gebildeter, stellenweise durchsichtiger Filterkammer
US2815760A (en) * 1951-12-24 1957-12-10 Schreus Hans Theo Tobacco smoke filter
US3194246A (en) * 1963-09-18 1965-07-13 Mantchev Marco Ivanov Cigarette holder

Cited By (41)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3807286A (en) * 1972-10-04 1974-04-30 Brown & Williamson Tobacco Multiple filter having a loose granule section with perforated inner wrapper
US4015610A (en) * 1974-02-04 1977-04-05 Baumgartner Papiers S.A. Cigarette filter tip
US4185645A (en) * 1975-12-08 1980-01-29 F. J. Burrus & Cie Production of cigarette filter units
US4223597A (en) * 1976-11-26 1980-09-23 Baumgartner Papiers S.A. Method of the production of cigarette filters
US4161181A (en) * 1977-03-16 1979-07-17 Larry King Smoke filtering ashtrays
US4164231A (en) * 1977-07-14 1979-08-14 Jonas Greenwald Apparatus for controlling the length of cigarette to be smoked
US4306576A (en) * 1979-08-13 1981-12-22 Suk Moon Cigarette filter
EP1252832A2 (de) * 2001-04-23 2002-10-30 Hauni Maschinenbau AG Filter und Verfahren zur Herstellung von Filtern
EP1252832A3 (de) * 2001-04-23 2004-07-14 Hauni Maschinenbau AG Filter und Verfahren zur Herstellung von Filtern
EP1541044A4 (en) * 2002-09-19 2005-11-16 Japan Tobacco Inc CIGARETTE FILTER
US7487782B2 (en) 2002-09-19 2009-02-10 Japan Tobacco Inc. Cigarette filter
US20050161054A1 (en) * 2002-09-19 2005-07-28 Japan Tobacco Inc. Cigarette filter
EP1541044A1 (en) * 2002-09-19 2005-06-15 Japan Tobacco Inc. Filter for cigarette
US20060150991A1 (en) * 2003-02-04 2006-07-13 Hyung Lee Transparent extraction filter cigarette
US9554594B2 (en) 2003-09-30 2017-01-31 R.J. Reynolds Tobacco Company Filtered cigarette incorporating an adsorbent material
US8066011B2 (en) * 2003-09-30 2011-11-29 R. J. Reynolds Tobacco Company Filtered cigarette incorporating an adsorbent material
US20050066982A1 (en) * 2003-09-30 2005-03-31 Clark Melissa Ann Filtered cigarette incorporating an adsorbent material
US9491971B2 (en) 2005-12-13 2016-11-15 Philip Morris Usa Inc. Specifically-defined smoking article with activated carbon sorbent and sodium bicarbonate-treated fibers and method of treating mainstream smoke
US8739802B2 (en) 2006-10-02 2014-06-03 R.J. Reynolds Tobacco Company Filtered cigarette
US20080230079A1 (en) * 2007-03-21 2008-09-25 Philip Morris Usa Inc. Multi-component filter providing improved flavour enhancement
WO2009106374A1 (en) * 2008-02-27 2009-09-03 British American Tobacco (Investments) Limited Filter for a smoking article
US20090293894A1 (en) * 2008-06-02 2009-12-03 Philip Morris Usa Inc. Smoking article with transparent section
US8393334B2 (en) * 2008-06-02 2013-03-12 Philip Morris Usa Inc. Smoking article with transparent section
US8360074B2 (en) 2009-06-12 2013-01-29 British American Tobacco (Investments) Limited Smoking article
US20120240948A1 (en) * 2009-09-30 2012-09-27 Tannpapier Gmbh Method for producing a mouthpiece cover of a cigarette
US9723868B2 (en) * 2009-09-30 2017-08-08 Tannpapier Gmbh Method for producing a mouthpiece cover of a cigarette
AT13169U3 (de) * 2009-09-30 2013-12-15 Tannpapier Gmbh Verfahren zur Herstellung eines Mundstückbelags einer Zigarette
US8616219B2 (en) 2009-12-31 2013-12-31 British American Tobacco (Investments) Limited Filter for a smoking article
CN102917610A (zh) * 2010-06-07 2013-02-06 英美烟草(投资)有限公司 用于吸烟物品的包装物
JP2013529090A (ja) * 2010-06-07 2013-07-18 ブリティッシュ アメリカン タバコ （インヴェストメンツ） リミテッド 喫煙品用ラッパー
WO2011154246A1 (en) * 2010-06-07 2011-12-15 British American Tobacco (Investments) Limited Wrapper for a smoking article
US8720451B2 (en) 2010-06-07 2014-05-13 British American Tobacco (Investments) Limited Wrapper for a smoking article
US20140326259A1 (en) * 2011-11-07 2014-11-06 Philip Morris Prodcuts S.A. Smoking article comprising menthol
US10004256B2 (en) * 2011-11-07 2018-06-26 Philip Morris Products S.A. Smoking article comprising menthol
WO2013160671A1 (en) * 2012-04-25 2013-10-31 British American Tobacco (Investments) Limited Smoking articles
EP2949225A1 (en) 2014-05-27 2015-12-02 Reemtsma Cigarettenfabriken GmbH Smoking article
WO2015180821A1 (en) 2014-05-27 2015-12-03 Reemtsma Cigarettenfabriken Gmbh Smoking article
US20170325497A1 (en) * 2014-12-24 2017-11-16 Philip Morris Products S.A. Aerosol-generating article comprising a transparent tube
US10390558B2 (en) * 2014-12-24 2019-08-27 Philip Morris Products S.A. Aerosol-generating article comprising a transparent tube
CN111213056A (zh) * 2017-10-19 2020-05-29 莱战略控股公司 气溶胶递送装置的比色气溶胶和气体检测
US20210378290A1 (en) * 2020-06-04 2021-12-09 R.J. Reynolds Tobacco Company Paper sheet filter element for a smoking article, and associated method

Also Published As

Publication number Publication date
DK130135C (xx) 1975-06-09
NL6614994A (xx) 1967-05-16
SE341975B (xx) 1972-01-24
GB1093710A (en) 1967-12-06
FR1515992A (fr) 1968-03-08
LU52346A1 (xx) 1967-01-11
DE1692926A1 (de) 1969-10-30
CH462692A (fr) 1968-09-15
BE689521A (xx) 1967-04-14
DK130135B (da) 1974-12-30

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