EP2240037B1 - Rauchartikel - Google Patents

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Publication number
EP2240037B1
EP2240037B1 EP08870238A EP08870238A EP2240037B1 EP 2240037 B1 EP2240037 B1 EP 2240037B1 EP 08870238 A EP08870238 A EP 08870238A EP 08870238 A EP08870238 A EP 08870238A EP 2240037 B1 EP2240037 B1 EP 2240037B1
Authority
EP
European Patent Office
Prior art keywords
section
filter
tube
smoking article
smoking
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.)
Not-in-force
Application number
EP08870238A
Other languages
English (en)
French (fr)
Other versions
EP2240037A1 (de
Inventor
Richard Fiebelkorn
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.)
British American Tobacco Investments Ltd
Original Assignee
British American Tobacco Investments Ltd
British American Tobacco Co Ltd
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 British American Tobacco Investments Ltd, British American Tobacco Co Ltd filed Critical British American Tobacco Investments Ltd
Priority to PL08870238T priority Critical patent/PL2240037T3/pl
Publication of EP2240037A1 publication Critical patent/EP2240037A1/de
Application granted granted Critical
Publication of EP2240037B1 publication Critical patent/EP2240037B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • 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
    • A24D3/02—Manufacture of tobacco smoke filters
    • A24D3/0275—Manufacture of tobacco smoke filters for filters with special features
    • A24D3/0279—Manufacture of tobacco smoke filters for filters with special features with tubes
    • 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
    • A24D3/043—Tobacco smoke filters characterised by their shape or structure with ventilation means, e.g. air dilution
    • 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
    • A24D3/06—Use of materials for tobacco smoke filters
    • A24D3/08—Use of materials for tobacco smoke filters of organic materials as carrier or major constituent
    • A24D3/10—Use of materials for tobacco smoke filters of organic materials as carrier or major constituent of cellulose or cellulose derivatives

Definitions

  • the present invention relates to smoking articles such as cigarettes, and in particular to smoking articles that include a filter.
  • GB 2177890 discloses a cigarette in which a filter comprises first and second elements, where the first element is adjacent the tobacco rod, and the second element is adjacent the mouth.
  • the first element incorporates a thin central tube of heat-shrink material surrounded by cellulose acetate.
  • the tube provides a low resistance path to smoke through the first element (in preference to the smoke having to pass through the surrounding cellulose acetate). This low resistance path through the first element helps to compensate for the higher initial resistance of the long tobacco rod.
  • the central tube collapses, and the vacated space is then occupied by expansion of the surrounding cellulose acetate material.
  • the tube now no longer provides a low resistance path for smoke through the first element, with the smoke having to pass instead through the comparatively high resistance of the cellulose acetate of the first element.
  • the tube does not collapse with heat. Rather, the tube is gradually blocked by smoke components that condense onto filter material at the end of the tube, whereupon the smoke must flow through the more resistant material around the filter.
  • the tube may be provided with holes along its length to produce a more gradual transition.
  • WO2007/135414 discloses a smoking article filter with three filter sections with the first and third sections including longitudinal channels.
  • the present invention provides a smoking article such as a cigarette having a filter located at one end.
  • the filter comprises at least first, second and third sections disposed in succession along a cylindrical axis of the smoking article.
  • Each of the first and third sections includes at least one tube running the length of the respective section, substantially parallel to the cylindrical axis of the smoking articles.
  • the second section comprises filter material of substantially higher filtration efficiency than the tubes of the first and third sections.
  • the exit of the at least one tube inside the first section becomes blocked after a first amount of smoking, so that a greater proportion of smoke passing through the first section travels through the main body of the first section than during the first amount of smoking.
  • Such a filter can help to provide a more consistent level of tar, with a reduced dependency on the smoking regime or how much of the smoking article has already been consumed.
  • the entrance into the tube in the third section may become at least partly blocked. More smoke is now routed through the remainder of the third filter section (other than the tube), again comprising some form of filter material.
  • this embodiment provides a graduated and controlled rise in the filtration efficiency of the filter as the smoking article is consumed. Note that the rise in filtration efficiency occurs more rapidly for higher puff volumes and/or puff rates (since in this case the tubes block more quickly).
  • the rise in filtration efficiency of the filter helps to compensate for reduced filtration by the sunburnt tobacco rod itself as the smoking article is consumed.
  • the tube(s) of the first section are coaxial with the tube(s) of the third section.
  • the tubes of the first and/or third section may be located centrally within the smoking article (i.e. coaxial with the smoking article), or may be provided as grove(s) in the outer circumference of the filter. Another possibility is that a tube is located intermediate the centre and outside of the filter.
  • the number and positioning of the tubes can be varied as desired to control the overall filter properties, and can vary from one filter section to another.
  • the tube(s) of the first section and/or the third section have a diameter in the range 0.1-3mm, or more particularly in the range 0.5-1.5mn, and a length in the range 4-15mm.
  • the tube dimensions help to determine the overall properties of the filter. For example, it takes longer for a tube, and in particular the ends of the tube, with a greater diameter to become (at least partly) blocked during smoking. Accordingly, the tube dimensions can be adjusted depending on the desired properties of the filter and smoking article. Note that different tubes may have different dimensions (both in respect of tubes in different filter sections, and also in respect of multiple tubes in a single filter section).
  • the tubes are hollow, and the first, second and third filter sections all comprise filter material, such as cellulose acetate, paper, and so on (different filter sections may comprise different filter material).
  • filter material such as cellulose acetate, paper, and so on
  • the filter material surrounds or embeds the tube(s) of these sections.
  • the relative filtration efficiency of the filter material in the different sections can be used to control the overall properties of the filter.
  • the filter material of the first filter section has a lower filtration efficiency than the filter material of the second and third filter sections. Consequently, the rise in filtration efficiency when a tube through the first filter section is at least partly blocked is smaller than the rise in filtration efficiency when a tube through the third filter section is at least partly blocked.
  • Ventilation may be provided around the circumference of the filter in one or more zones.
  • the ventilation zone is preferably located downstream of a potential blockage point.
  • ventilation holes are provided on the outside of the second and/or third filter section. If the tubes through the first and third sections are centrally located (i.e. coaxial with the smoking article), then initially most of the airflow is along the central axis of the smoking article. However, as the ends of the tubes become at least partly blocked, and the flow of smoke is forced towards the outer portions of the smoking article, this increases the amount of air drawn in through the ventilation holes to dilute the smoke. In addition, the pressure differential, or pressure drop (PD), of the smoking article will increase. The positioning of the ventilation immediately downstream of the blockage points result in increased ventilation levels as the PD of the filter increases.
  • PD pressure drop
  • the filter comprises additional pairs of sections in succession along the cylindrical axis of the smoking article after the third section.
  • Each additional pair of sections comprises a first and second additional section.
  • the first additional section includes at least one tube running the length of the first additional section, substantially parallel to the cylindrical axis of the smoking article.
  • the second additional section comprises filter material of substantially higher filtration efficiency than the tube of the first additional section.
  • Increasing the number of filter sections in this manner allows further control over the filter behaviour. For example, if a fourth and fifth filter section are provided analogous to the second and third filter sections, then the tube in fifth filter section will at least partly block some time after the tube in the third filter section becomes at least partly blocked. Such a filter therefore has more gradations in the rise of filter efficiency as respective tubes become blocked.
  • FIG 1 is the schematic illustration of a cigarette 10 in accordance with one embodiment of the invention.
  • Cigarette 10 has a generally cylindrical shape, and comprises a tobacco rod 15 (only shown partly in Figure 1 ) joined to a filter 20 with an outer wrap 21.
  • the filter is located at the mouth end 100 of the cigarette.
  • the cigarette 10 is lit at the end of the tobacco rod 15 opposite to the mouth end.
  • Filter 20 comprises three sections 31, 41, 51 arranged along the cylindrical axis of the cigarette, where each section is cylindrical in shape. Section 31 is adjacent the tobacco rod 15, section 51 is adjacent the mouth end 100, and section 41 is between section 31 and section 51.
  • the configuration of cigarette 10 is therefore determined by a succession of three planes, all perpendicular to the cylindrical axis of the cigarette.
  • the first plane defines the boundary between tobacco rod 15 and the first filter element 31
  • the second plane defines the boundary between the first filter element 31 and the second filter element 41
  • the third plane defines the boundary between the second filter element 41 and the third filter element 51.
  • the separation between the different planes is in the region 5-10mm. (In other embodiments, the separation may be in the region 4-15mm).
  • the first filter section 31 includes a tube 35 and the third filter section 51 also includes a tube 55.
  • Tubes 35 and 55 are both coaxial with the cylindrical axis of the cigarette and each tube 35, 55 extends the length of its respective section.
  • the radius of tubes 35, 55 is significantly less than the radius of the cigarette.
  • the diameter for the tubes may only be approximately 0.1-3mm.
  • each of tubes 35, 55 has a diameter of approximately 0.5-1mm. Note that if the radius of a tube is 20% of the radius of the cigarette as a whole, the cross-sectional area of the tube is only 4% of the cross-sectional area of the cigarette.
  • the tubes 35, 55 may be made of paper, cardboard, plastic or any other suitable material and may have a porous or non-porous surface. In the embodiment shown, the tubes 35, 55 are hollow, but in other embodiments may have a filling that offers very little resistance to airflow. In the embodiments shown, tubes 35 and 55 are substantially the same as one another, but in other embodiments may vary as appropriate in term of dimensions, shape and/or other properties.
  • the tube 35 is surrounded by filter material 32 such as cellulose acetate, paper, polypropylene, or any other suitable material. This material is formed with a relatively low density, and hence a relatively low filtration efficiency (but significantly higher than the hollow tube).
  • the middle section 41 which does not contain a central tube, also comprises a filter material 42 such as cellulose acetate, paper, or polypropylene, etc. This material is formed with a relatively high density, and so has a high filtration efficiency (compared to that of material 32).
  • the tube 55 is also surrounded by filter material 52 such as cellulose acetate, paper, polypropylene, etc. Again, this material is formed with a relatively high density, and so has a high filtration efficiency (compared to that of material 32).
  • the outer wrap 21 is provided with two circumferential rings of ventilation holes.
  • the first ring of ventilation holes 43 is provided around the second section of the filter 41, while the second ring of ventilation holes 53 is provided near the start (i.e. away from the mouth end 100) of the third section of the filter 51. These ventilation holes allow air to be drawn into the cigarette filter and hence dilute smoke passing through.
  • FIG 2 illustrates the main smoke flow through the cigarette 10 of Figure 1 , when the cigarette is first smoked, in accordance with one embodiment of the invention.
  • Smoke from the burning tobacco travels down the tobacco rod 15 to filter 20.
  • the smoke now passes through the tube 35 of the first element 31 in preference to passage through filter material 32, since tube 35 offers a lower resistance to the smoke flow.
  • the smoke then passes through the high filtration efficiency material of the second section 41 before exiting at the mouth end 100 of the filter via the third section 51.
  • the smoke passes through the tube 55 in preference to the surrounding filter material 52, due to the lower flow resistance of tube 55.
  • the smoke After having passed through filter material 32 of the first filter element 31, the smoke is drawn through the second element 41, and converges on the entrance 56 to tube 55. The smoke flow then passes through tube 55 as previously described in order to exit the filter 20 at mouth end 100.
  • the smoke flow through the second filter element 41 now passes somewhat closer to the ventilation holes 43 on the outside of the filter 20 (compared with the configuration of Figure 2 ). This is because with the central tube 35 blocked (either completely or partly), more smoke exits the first filter section 31 nearer to the outside of the cigarette.
  • the restriction of the end of tube 35 creates an increase in pressure drop in the filter section upstream of the ventilation holes, thereby increasing the amount of ventilating air entering the filter.
  • more smoke passes through the radially outer portions of the filter, adjacent to the incoming ventilating air, more smoke is deflected radially inwards by the ventilating air towards the central portion of the filter and across the filter material, thereby providing an increase in filtration efficiency.
  • the flow through the second filter section 41 is largely parallel to the cylindrical axis of the cigarette and is generally located in the (radially) outer portions of the filter, nearer to the ventilation holes 43 and 53.
  • This increased flow adjacent to filtration holes 43 and 53 combined with the overall increase in pressure drop of the filter due to the (partial) blockage of the entrance of the tube 55, draws in increased ventilating air, resulting in greater dilution of the smoke reaching the mouth end 100.
  • Cigarette 10 therefore demonstrates an increase in filtration efficiency, pressure drop, and also ventilation with increased tar generation. Furthermore, cigarette 10 has a relatively flat puff by puff tar profile (based on the combined filtering of the filter 20 and remaining tobacco rod 15).
  • FIG. 1 illustrates one embodiment of the invention
  • filter sections 31 and/or 51 may be provided with multiple tubes.
  • the tube or tubes may not necessarily be located along the central axis of cigarette 10.
  • one possibility would be to have one or more grooves along the outer rim of the filter material 32 and/or 52 either to replace, or in addition to tubes 35/55 respectively.
  • filter 20 comprises three sections, in other embodiments there may be additional sections.
  • a filter might be provided with a fourth section analogous to the second section, and a fifth section analogous to the third section. This would then provide a further gradation in the rise of filter efficiency.
  • the number, size, shape, material and structure of the tubes or grooves, the type and density of the filter material, and the number and structure of the filter sections can be adjusted to provide the desired overall filter characteristics - e.g. depending upon properties of particular tobacco, etc.
  • the present approach has been described generally in the context of cigarettes, it can be applied to a wider range of smoking articles, e.g. cigars. Accordingly, the scope of the present invention is defined by the appended claims.

Claims (17)

  1. Rauchartikel bzw. rauchbarer Artikel (10) mit einem Filter (20), der an einem Ende angeordnet ist, wobei der Filter wenigstens erste, zweite und dritte Sektionen (34, 41, 51) aufweist, die in einer Aufeinanderfolge längs einer zylindrischen Achse des rauchbaren Artikels angeordnet sind, wobei:
    jede der ersten und dritten Sektionen wenigstens ein Rohr (35, 55) enthält, das die Länge der jeweiligen Sektion im wesentlich parallel zu der zylindrischen Achse des rauchbaren Artikels verläuft;
    die zweite Sektion weist Filtermaterial mit einer wesentlich höheren Filtrierwirksamkeit als die Rohre der ersten und zweiten Sektion auf; und
    dadurch gekennzeichnet, dass
    bei der Verwendung der Auslass des wenigstens einen Rohrs im Innern der ersten Sektion nach einer ersten Menge bzw. Maß an Rauchen blockiert wird, so dass ein größerer Anteil des Rauchs, der durch die erste Sektion strömt, durch den Hauptkörper der ersten Sektion strömt als während der ersten Menge bzw. Maßes an Rauchen.
  2. Rauchbarer Artikel nach Anspruch 1, wobei das wenigstens eine Rohr der ersten Sektion koaxial mit dem wenigstens einen Rohr der dritten Sektion ist.
  3. Rauchbarer Artikel nach Anspruch 1 oder 2, wobei wenigstens ein Rohr der ersten Sektion und wenigstens ein Rohr der dritten Sektion koaxial zu dem rauchbaren Artikel sind.
  4. Rauchbarer Artikel nach einem der vorhergehenden Ansprüche, wobei wenigstens ein Rohr der ersten Sektion eine Nut bzw. Rille in dem äußeren Umfang des Filters aufweist.
  5. Rauchbarer Artikel nach einem der vorhergehenden Ansprüche, wobei wenigstens ein Rohr der dritten Sektion eine Nut bzw. Rille in dem äußeren Umfang des Filters aufweist.
  6. Rauchbarer Artikel nach einem der vorhergehenden Ansprüche, wobei das wenigstens eine Rohr der ersten Sektion eine Länge im Bereich von 4 bis 15 mm hat.
  7. Rauchbarer Artikel nach einem der vorhergehenden Ansprüche, wobei das wenigstens eine Rohr der ersten Sektion oder der dritten Sektion einen Durchmesser im Bereich von 0,1 bis 3 mm hat.
  8. Rauchbarer Artikel nach Anspruch 7, wobei das wenigstens eine Rohr der ersten Sektion oder der dritten Sektion einen Durchmesser im Bereich von 0,5 bis 1,5 mm hat.
  9. Rauchbarer Artikel nach einem der vorhergehenden Ansprüche, wobei das wenigstens eine Rohr der dritten Sektion eine Länge im Bereich von 4 bis 15 mm hat.
  10. Rauchbarer Artikel nach einem der vorhergehenden Ansprüche, wobei die Rohre hohl sind.
  11. Rauchbarer Artikel nach einem der vorhergehenden Ansprüche, wobei die erste Filtersektion außer dem wenigstens einen Rohr Filtermaterial aufweist.
  12. Rauchbarer Artikel nach Anspruch 11, wobei das Filtermaterial der ersten Filtersektion eine geringere Filtrierwirksamkeit als das Filtermaterial der zweiten Filtersektion hat.
  13. Rauchbarer Artikel nach einem der vorhergehenden Ansprüche, wobei die dritte Filtersektion außer dem wenigstens einen Rohr Filtermaterial aufweist.
  14. Rauchbarer Artikel nach Anspruch 13, wobei das Filtermaterial der dritten Filtersektion eine höhere Filtrierwirksamkeit als das Filtermaterial der ersten Filtersektion hat.
  15. Rauchbarer Artikel nach einem der vorhergehenden Ansprüche, wobei auf der Außenseite der zweiten oder dritten Filtersektion Ventilationslöcher vorgesehen sind.
  16. Rauchbarer Artikel nach einem der vorhergehenden Ansprüche, wobei der Filter zusätzliche Paare von Filtersektionen in Aufeinanderfolge längs einer zylindrischen Achse des rauchbaren Artikels hinter der dritten Sektion aufweist, wobei jedes Paar der Sektionen umfasst:
    eine erste zusätzlich Sektion mit wenigstens einem Rohr, das die Länge der ersten zusätzlichen Sektion im Wesentlichen parallel zu der zylindrischen Achse des rauchbaren Artikels verläuft, und
    eine zweite zusätzliche Sektion mit Filtermaterial von wesentlich höherer Filtrierwirksamkeit als das wenigstens eine Rohr der ersten zusätzlichen Sektion.
  17. Rauchbarer Artikel nach einem der vorhergehenden Ansprüche, wobei bei Verwendung:
    der Auslass des wenigstens einen Rohrs in der ersten Sektion nach der ersten Menge bzw. Maß an Rauchen blockiert wird; und
    der Einlass des wenigstens einen Rohrs in der dritten Sektion nach einer weiteren Menge bzw. Maß an Rauchen blockiert wird.
EP08870238A 2008-01-07 2008-12-18 Rauchartikel Not-in-force EP2240037B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL08870238T PL2240037T3 (pl) 2008-01-07 2008-12-18 Wyrób do palenia

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB0800216.4A GB0800216D0 (en) 2008-01-07 2008-01-07 Smoking article
PCT/EP2008/067954 WO2009087042A1 (en) 2008-01-07 2008-12-18 Smoking article

Publications (2)

Publication Number Publication Date
EP2240037A1 EP2240037A1 (de) 2010-10-20
EP2240037B1 true EP2240037B1 (de) 2012-10-17

Family

ID=39111209

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08870238A Not-in-force EP2240037B1 (de) 2008-01-07 2008-12-18 Rauchartikel

Country Status (19)

Country Link
US (1) US20110048436A1 (de)
EP (1) EP2240037B1 (de)
JP (1) JP4965714B2 (de)
KR (1) KR20100101686A (de)
CN (1) CN101959432A (de)
AR (1) AR070114A1 (de)
AU (1) AU2008346372B2 (de)
BR (1) BRPI0821624A2 (de)
CA (1) CA2711476A1 (de)
CL (1) CL2009000001A1 (de)
ES (1) ES2397563T3 (de)
GB (1) GB0800216D0 (de)
MY (1) MY154302A (de)
PL (1) PL2240037T3 (de)
RU (1) RU2010132703A (de)
TW (1) TW200950713A (de)
UA (1) UA98835C2 (de)
WO (1) WO2009087042A1 (de)
ZA (1) ZA201004801B (de)

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CN103431518B (zh) * 2013-09-05 2015-07-08 上海华宝生物科技有限公司 一种一次注塑成型烟气过滤装置
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CN107594619B (zh) * 2017-09-22 2023-09-15 河南中烟工业有限责任公司 一种双重过滤滤嘴结构及卷烟
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CN2253120Y (zh) * 1995-10-25 1997-04-30 宁宝纲 一种卷烟复合滤嘴
JP2001120249A (ja) * 1999-10-22 2001-05-08 Mitsubishi Rayon Co Ltd たばこフィルター
US20040237976A1 (en) * 2001-10-30 2004-12-02 Garthaffner Martin T. Reed valve controlled canister
WO2007135414A1 (en) * 2006-05-22 2007-11-29 Filtrona International Limited Tobacco smoke filter
GB0715172D0 (en) * 2007-08-03 2007-09-12 British American Tobacco Co Filter and method for making a filter for a cigarette

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JP4965714B2 (ja) 2012-07-04
BRPI0821624A2 (pt) 2015-06-16
AU2008346372A1 (en) 2009-07-16
PL2240037T3 (pl) 2013-05-31
EP2240037A1 (de) 2010-10-20
WO2009087042A1 (en) 2009-07-16
CN101959432A (zh) 2011-01-26
RU2010132703A (ru) 2012-02-20
KR20100101686A (ko) 2010-09-17
ES2397563T3 (es) 2013-03-07
CL2009000001A1 (es) 2009-12-11
ZA201004801B (en) 2011-03-30
AU2008346372B2 (en) 2013-10-31
CA2711476A1 (en) 2009-07-16
TW200950713A (en) 2009-12-16
UA98835C2 (en) 2012-06-25
GB0800216D0 (en) 2008-02-13
AR070114A1 (es) 2010-03-17
US20110048436A1 (en) 2011-03-03
JP2011508608A (ja) 2011-03-17
MY154302A (en) 2015-05-29

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