CN1578631A - Cigarette filter and filter-tipped cigarette - Google Patents
Cigarette filter and filter-tipped cigarette Download PDFInfo
- Publication number
- CN1578631A CN1578631A CNA028213998A CN02821399A CN1578631A CN 1578631 A CN1578631 A CN 1578631A CN A028213998 A CNA028213998 A CN A028213998A CN 02821399 A CN02821399 A CN 02821399A CN 1578631 A CN1578631 A CN 1578631A
- Authority
- CN
- China
- Prior art keywords
- filter
- filtration fraction
- cigarette
- mainstream smoke
- tobacco
- 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.)
- Granted
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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
- A24D3/06—Use of materials for tobacco smoke filters
- A24D3/14—Use of materials for tobacco smoke filters of organic materials as additive
-
- 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
- A24D3/16—Use of materials for tobacco smoke filters of inorganic materials
- A24D3/163—Carbon
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
- Cigarettes, Filters, And Manufacturing Of Filters (AREA)
Abstract
A filter for cigarette which has two or more filter sections selected from among a filter section having a liquid fatty acid or a liquid ester of a fatty acid, each having a viscosity of 1 to 300 cP, incorporated therein, a filter section having a glycol having a viscosity of 1 to 300 cP incorporated therein, and a filter section having activated carbon incorporated therein.
Description
Technical field
The present invention relates to a kind of cigarette filter and filter-tipped cigarette, in more detail, can filter the tobacco mainstream smoke when the present invention relates to smoking effectively and can improve cigarette filter and the filter-tipped cigarette that tobacco smells flavor.
Background technology
In recent years, with the filter efficiency that improves the tobacco mainstream smoke or improve tobacco to smell flavor be purpose and cigarette filter is added additive.Especially, in filter fiber, add the cigarette filter of active carbon (charcoal), more than half as filter-tipped cigarette occupation rate in the Japanese market.In addition, in the world, the area custom that has is aspirated the cigarette of tobacco later on by water again.But, to open the spy and to disclose a kind of example that in cigarette filter, adds water on the clear 63-276474 communique, but filter the cigarette of tobacco by water, its smoke changes.Also have, on the public clear 44-29317 communique of spy, disclose the tobacco filter that in the estron silk, adds active carbon and polyalkylene glycols according to a certain percentage and form.On the public clear 46-12957 communique of spy, disclose various greases and sorbitan derivative have been added in the filter-tip material and the filter tip that is used for tobacco that forms.
Yet, though sometimes according to coming out by sensory feel to the influence of smoke to adding additive in the tobacco filter, but, its filterability of heterogeneity in the tobacco mainstream smoke does not also check on science, and above-mentioned most of additives also are not used in the tobacco filter of market sale so far.As tobacco filter, only following filter tip is used on the commercially available tobacco, that is: a kind of being considered to, removed the filter tip that forms in the active carbon adding fiber of the steam composition that does not comprise permanent gas by a lot of apertures, and a kind of typel and formed filter tip of paper that does not add active carbon.
; adding active carbon is the effective means that is used for improving in tobacco mainstream smoke vapor phase composition filter efficiency; but in the smoking initial stage; tar in the tobacco mainstream smoke stops up the aperture of active carbon; and lost adsorption activity; therefore, the filterability of every cigarette vapor phase composition in the mainstream smoke when being taken out is to reduce in time when finishing from the smoking initial stage to smoking.Also have,, a large amount of active carbons is added on the filter tip, not only aggravate tobacco flavor and worsen, and consider it also is insignificant from economic angle because of active carbon in order to address this problem.
Therefore, the object of the present invention is to provide a kind of cigarette filter, this filter tip can filter each composition in the tobacco mainstream smoke effectively.
Disclosure of an invention
The inventor is in order to solve above-mentioned problem, adopt the filter tip that adds various additives to make cigarette, and its mainstream smoke analyzed by filter-tip front and back, found that: because the kind difference of additive, the filtering component of its tobacco mainstream smoke has evident difference.This result is carried out analysis and arrangement to be learnt: viscosity is low, has promptly added the filter tip of the liquid fat acid (laurate, oleic acid, linoleic acid, leukotrienes etc.) with 1～300cP viscosity, and whole tobacco mainstream smokes are effectively filtered; Viscosity is low, promptly added the filter tip of liquid fat acid esters with 1～300cP viscosity (as natural oil of olive oil, castor bean oil, rapeseed oil, corn oil, safflower oil, grape-kernel oil and so on etc.), be easy to filter the low composition of polarity in the tobacco mainstream smoke, the composition that polarity is high is difficult to filter; Viscosity is low, has promptly added the filter tip of the ethylene glycol (polyethylene glycol, propane diols etc.) with 1～300cP viscosity, is easy to filter the high composition of tobacco mainstream smoke Semi-polarity, and the low composition of polarity is difficult to filter.Also having, is 1～4000Pa by the vapour pressure of composition in the tobacco mainstream smoke that these additives absorbed, and is 100～100000Pa by the vapour pressure of composition in the adsorbed tobacco mainstream smoke of active carbon, and both are different.
Further learn, even above-mentioned aliphatic acid or fatty acid ester and ethylene glycol are added on the same filter tip, the filterability of tobacco mainstream smoke can not improve, filter effect is also unstable, on the other hand, when being added on the filter tip behind the additives such as the described aliphatic acid of cooperation, fatty acid ester, ethylene glycol in active carbon, this additive is attached on the active carbon, and the filter efficiency of tobacco mainstream smoke will reduce.
Therefore, in the present invention, tobacco filter is divided into 2 parts at least, adds additive (mainstream smoke composition remover) not of the same race in every part.Thus, the tobacco mainstream smoke is filtered every kind of composition by each part, can reach the purpose of high efficiency filter mainstream smoke.
That is, according to the present invention, provide a kind of cigarette filter, it possesses more than 2 of following three filtration fractions (A)～(C):
(A) the liquid fat acid esters with 1～300cP viscosity or the filtration fraction of liquid fat acid have been added;
(B) added the filtration fraction of ethylene glycol with 1～300cP viscosity; And
(C) added the filtration fraction of active carbon.
When cigarette filter of the present invention comprised filtration fraction (A), if use olive oil as additive, the smoke of releasing was good, so preferred.When cigarette filter of the present invention comprised filtration fraction (B), if when using propane diols as glycol, then the filter efficiency of the high composition of polarity in the tobacco mainstream smoke was high especially.
When cigarette filter of the present invention comprised filtration fraction (C), the downstream side that filtration fraction (C) is positioned at filtration fraction (A) and/or filtration fraction (B) was preferred.
Cigarette filter of the present invention has the plane filter tip on the dirtiest position.
The present invention also provides an a kind of end in tobacco rod to possess the filter-tip cigarette of the present invention.
In the present invention, the upper reaches, dirty during with smoking the flow direction of mainstream smoke as benchmark.That is to say that the tobacco rod side is the upper reaches, the suction inlet side is dirty.
Description of drawings
Fig. 1 is the part open cube display of the filter-tipped cigarette of one embodiment of the present invention.
The specific embodiment
Below, further describe the present invention.
Fig. 1 is the part open cube display of the Filter cigarette of one embodiment of the present invention.It is the cigarette filter of expression an embodiment of the invention that this figure also should be interpreted as.
As shown in the figure, filter-tipped cigarette 10 comprises, common tobacco filler 201 usefulness cigarette paper, 202 packages such as pipe tobaccos and tobacco rod 20 Hes that form, the filter tip of laying at an end of this tobacco rod 20 30, other structures except filter structure, all the Filter cigarette with common is the same.Therefore, can use common tobacco rod as tobacco rod 20.
In the present invention, filter tip comprise in the following filtration fraction more than 2: the filtration fraction (A) that has added liquid fat acid esters with 1～300cP viscosity or liquid fat acid as mainstream smoke composition remover, added ethylene glycol with 1～300cP viscosity filtration fraction (B) as mainstream smoke composition remover and the filtration fraction (C) that added active carbon as mainstream smoke composition remover.
The liquid fat acid esters that is added in the described filtration fraction (A) can be exemplified as the natural oil of olive oil, castor bean oil, rapeseed oil, corn oil, safflower oil, grape-kernel oil and so on etc.Also have, the liquid fat acid of being added in the described filtration fraction (A) can be exemplified as, laurate, oleic acid, linoleic acid, leukotrienes etc.The mainstream smoke composition remover that is added in the described filtration fraction (A), preferably olive oil.The local flavor of olive oil and the fragrance of tobacco are particularly suitable for.The addition of liquid fat acid esters or liquid fat acid is preferably 5%～30% of filter fiber weight.
The viscosity of being added in the described filtration fraction (B) is that the ethylene glycol of 1cP～300cP can be exemplified as polyethylene glycol, propane diols etc., but preferred propane diols.The addition of ethylene glycol is preferably 5%～30% of filter fiber weight.
The active carbon that is added in the described filtration fraction (C) can use the used active carbon of common said charcoal filtering mouth, for example activated coco nut charcoal.(the filter tip circumference is that 16.8mm～25.8mm) is 10mg～80mg to the long filter tip of the preferred every 10mm of the addition of active carbon.
Among the figure,, 4 different filtration fractions are for example arranged each other, that is to say, comprising: the 1st filtration fraction the 301, the 2nd filtration fraction the 302, the 3rd filtration fraction 303 and the 4th filtration fraction 304 from filter tip 30 upstream sides.
In a preferred embodiment of the present invention, the 1st filtration fraction 301 that adjacent tobacco rod 20 is provided with, (A) constituted by above-mentioned filtration fraction, and the 2nd filtration fraction 302 is made of above-mentioned filtration fraction (B), and the 3rd filtration fraction 303 is made of above-mentioned filtration fraction (C).Being arranged in the 4th the dirtiest filtration fraction 304 is made of the plane filter tip that the active carbon of the 3rd filtration fraction 303 that is used to prevent that filtration fraction (C) from being constituted comes off.Do not contain the additive that is used to remove mainstream smoke in the filter tip of plane, be actually and constitute by filtering material.
301～304 of the 1st～the 4th filtration fraction forms by filter tip stock common, that be used for cigarette filter, for example by paper and, synthetic fibres such as cellulose staple fibre, cellulose acetate ester fiber, vinylon fiber form, except the 4th filtration fraction 304, other all add mainstream smoke composition remover.In filtration fraction 301 and filtration fraction 302, mainstream smoke composition remover is by adding to filtering material spraying or coating.Employed active carbon in the 3rd filtration fraction 303 can mix in filtering material by conventional method and disperse to add.
Self-evident, in the filter tip structure of above-mentioned preferred implementation, in filtration fraction 301～303, all can omit wherein a kind.Also can omit filtration fraction 304.But cigarette filter of the present invention most preferably has filtration fraction (C) at the downstream side of filtration fraction (A) and/or filtration fraction (B).Adopt such structure, filter efficiency improves exponentially.Also have,, can suppress the reduction in time of filter efficiency of the tobacco mainstream smoke of active carbon by filtration fraction (C) is arranged on downstream side.
In addition, 301～304 of the 1st～the 4th filtration fraction separately as required, adopts different cigarette paper (not shown) respectively in addition under the state of package, is rolled into integral body with a kind of forming paper 310.The filter tip 30 of moulding like this is installed in an end of tobacco rod 20 with common sheet paper 320.
According to embodiment the present invention is described below, but the present invention is not limited to these embodiment.
Embodiment 1
For the influence of determining that polarity that mainstream smoke composition remover has is brought, olive oil, propane diols or linoleic acid (being the product with the pure medicine of light company) are added to the evaluation of carrying out mainstream smoke composition filter efficiency in the cigarette filter as mainstream smoke composition remover.
Cigarette filter has used the cellulose ethanoate filter tip (3Y/43000) of non-plasticizing.Various mainstream smoke composition removers are made into microgranular with atomizer to cigarette filter spraying, add 35mg respectively.What described tobacco rod was used is " soft seven-star " board tobacco rod that Japan Tobacco's industry (strain) is produced, and the filter tip that has added various mainstream smoke composition removers, fixes and manufactures experimently into cigarette with the glass cement paper tape.
After the cigarette spontaneous firing 15mm that manufactures experimently, under standard smoking condition, take a pull at the mainstream smoke composition that comes out from filter tip is measured by the gas chromatography/mass spectrometry analysis.The filterability of each mainstream smoke composition is a benchmark with not filter-tipped tobacco rod mainstream smoke composition, obtains the minimizing ratio of each mainstream smoke composition.Its result is as shown in table 1 below.In addition, when the filter tip (contrast) of mainstream smoke composition remover was not added in use, its result was shown in the table 1 in the lump.
Table 1 adopts the mainstream smoke composition filterability of various mainstream smoke composition removers
| The mainstream smoke composition | Mainstream smoke composition remover | |||
| Do not have | Olive oil | Propane diols | Linoleic acid | |
| Hydro carbons | ??32.9％ | ??99.9％ | ??65.3％ | ??99.9％ |
| Pyridines | ??55.7％ | ??98.7％ | ??99.4％ | ??99.8％ |
| Organic acid | ??57.0％ | ??78.9％ | ??87.8％ | ??88.9％ |
| Phenols | ??65.5％ | ??96.2％ | ??96.5％ | ??94.7％ |
As shown in table 1, compare with the filter tip of contrast, when adding olive oil, the filterability of hydro carbons, pyridines, phenols obviously increases.When adding propane diols, the filterability of pyridines, organic acid, phenols obviously increases, and shows the remove characteristic different with olive oil.When adding linoleic acid, obtained the filterability of all the mainstream smoke composition excellences shown in the table.As can be known from these results, mainstream smoke composition remover is preferentially removed and is had the mainstream smoke composition close with its polarity.
Embodiment 2
In the present embodiment, by having added the filtration fraction of active carbon and having added the effect that the filtration fraction of other mainstream smoke composition removers combines and estimate.
(1) at first, in order to estimate independent filterability of having added the filtration fraction of active carbon,, manufacture experimently out filtration fraction (charcoal filtering mouth) the form filling 30mg of the used active carbon of common cigarette with filling bed (thickness 2mm).For active carbon is not leaked out, of the downstream side setting of the cellulose ethanoate filtration fraction (3Y/43000) on the plane of length 5mm in the charcoal filtering part.This filter tip and embodiment 1 are connected an end of tobacco rod in the same manner, and each the mainstream smoke composition during to filling active carbon and not filling active carbon compares, and estimates filterability with indirect method.Analytic approach is the same with embodiment 1.
(2) also have, in order to estimate independent filterability of having added the filtration fraction of olive oil, add the 15mg olive oil with method similarly to Example 1 at the cellulose ethanoate filtration fraction (3Y/43000) of length 20mm, make filtration fraction, use the filterability of estimating the mainstream smoke composition with quadrat method.
(3) secondly,, the filter tip that above-mentioned (1) makes is arranged to connect charcoal filtering part and the filtration fraction that adds olive oil, and is installed on the tobacco rod, use with quadrat method and estimate mainstream smoke composition filterability at the downstream side of the filtration fraction that has added olive oil.
The gained result is as shown in table 2.
Table 2 uses filtration fraction more separately and is used in combination the filterability (%) of filtration fraction
| The mainstream smoke composition | Filtration fraction | |||
| Use separately | Be used in combination (active carbon+olive oil) | |||
| Add active carbon | Add olive oil | Calculated value | Measured value | |
| Acetaldehyde | ??63.6 | ????24.5 | ????72.5 | ????79.6 |
| Benzene | ??70.9 | ????38.8 | ????82.2 | ????95.7 |
| Pyridine | ??57.1 | ????83.1 | ????92.7 | ????98.1 |
| Acetate | ??25.3 | ????73.1 | ????79.9 | ????81.6 |
| Phenol | ??3.7 | ????89.5 | ????89.9 | ????94.0 |
| Nicotine | ??7.6 | ????65.4 | ????68.0 | ????67.0 |
| Glycerine | ??0.0 | ????61.1 | ????61.1 | ????61.0 |
In table 2, in the combination of charcoal filtering part and the filtration fraction that adds olive oil, its evaluation is based on the simple calculated value of independent use filtration fraction separately.As shown in table 2, when comparing calculated value and measured value, filterability is not seen evident difference on the higher boiling composition, but measured value increases significantly on low boiling point component.From its result as can be seen, if when the filtration fraction that active carbon is added as mainstream smoke composition remover is used in combination with downstream side at the filtration fraction of other mainstream smoke composition removers of interpolation, can access the effect (effect multiplies each other) when using separately separately above them.
As mentioned above, the invention provides a kind of can both the filtration each composition of tobacco mainstream smoke effectively and the cigarette filter that obtains, and have this filter-tip cigarette.
Claims (6)
1. cigarette filter, it possesses 2 above filtration fractions in following three filtration fractions (A)～(C):
(A) the liquid fat acid esters with 1～300cP viscosity or the filtration fraction of liquid fat acid have been added;
(B) added filtration fraction with 1～300cP viscosity ethylene glycol; And
(C) added the filtration fraction of active carbon.
2. filter tip as claimed in claim 1, wherein said fatty acid ester is an olive oil.
3. filter tip as claimed in claim 1, wherein said ethylene glycol are propane diols or polyethylene glycol.
4. filter tip as claimed in claim 1 is characterized in that, has filtration fraction (A) and/or filtration fraction (B), has filtration fraction (C) at the downstream side of these filtration fractions.
5. filter tip as claimed in claim 1 is characterized in that having the plane filtration fraction on the dirtiest position.
6. cigarette is comprising cigarette sticks and the filter tip as claimed in claim 1 that is provided with at an end of this cigarette sticks.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001332651 | 2001-10-30 | ||
| JP332651/2001 | 2001-10-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1578631A true CN1578631A (en) | 2005-02-09 |
| CN1284492C CN1284492C (en) | 2006-11-15 |
Family
ID=19148038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB028213998A Expired - Fee Related CN1284492C (en) | 2001-10-30 | 2002-10-23 | Cigarette filter and filter-tipped cigarette |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US20040200490A1 (en) |
| EP (1) | EP1442667A4 (en) |
| JP (1) | JP3910175B2 (en) |
| KR (1) | KR100607539B1 (en) |
| CN (1) | CN1284492C (en) |
| CA (1) | CA2464149A1 (en) |
| RU (1) | RU2264767C2 (en) |
| TW (1) | TWI243026B (en) |
| UA (1) | UA75987C2 (en) |
| WO (1) | WO2003037114A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103070477A (en) * | 2013-01-16 | 2013-05-01 | 湖南中烟工业有限责任公司 | Application of aminopropanol compound |
| CN103504474A (en) * | 2013-10-16 | 2014-01-15 | 红云红河烟草(集团)有限责任公司 | Cigarette filter stick capable of effectively improving water-absorbing quality of filter core |
| CN106418661A (en) * | 2009-05-26 | 2017-02-22 | 菲尔特隆纳过滤产品开发私人有限公司 | Tobacco smoke filter |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007043172A1 (en) * | 2005-10-12 | 2007-04-19 | Nissei Bio Company, Limited | Tobacco filter |
| WO2007083370A1 (en) * | 2006-01-18 | 2007-07-26 | Nissei Bio Co., Ltd. | Filter for air conditioner capable of removing toxic substance |
| EA010140B1 (en) * | 2006-05-08 | 2008-06-30 | Эльдар Бахрам Оглы Сариев | Cigarette filter |
| CA2667633C (en) * | 2006-11-29 | 2013-01-08 | Imperial Tobacco Canada Limited | Cigarette filter with flavored particles |
| GB0913509D0 (en) * | 2009-08-04 | 2009-09-16 | British American Tobacco Co | Filter for a smoking article |
| JP5766934B2 (en) | 2010-11-01 | 2015-08-19 | 株式会社ダイセル | Tobacco filter, method for producing the same, and tobacco |
| CN102144809B (en) * | 2011-05-17 | 2012-08-15 | 何金星 | Production method of cigarette additive and application of production method |
| US9149070B2 (en) * | 2011-07-14 | 2015-10-06 | R.J. Reynolds Tobacco Company | Segmented cigarette filter for selective smoke filtration |
| AR089183A1 (en) | 2011-11-30 | 2014-08-06 | Philip Morris Products Sa | ARTICLE TO SMOKE WITH A VENTILATED NOZZLE THAT INCLUDES FIRST AND SECOND ROADS OF AIR FLOW |
| JP2017077181A (en) * | 2014-02-14 | 2017-04-27 | 日本たばこ産業株式会社 | Filter-tipped cigarette |
| MX2016016298A (en) * | 2014-06-19 | 2017-05-01 | Daicel Corp | Cigarette filter tow band. |
| WO2018008608A1 (en) * | 2016-07-04 | 2018-01-11 | 日本たばこ産業株式会社 | Adsorbent, filter for smoking product which is provided with said adsorbent, and smoking product provided with said filter for smoking products |
| ES2717550B2 (en) | 2017-12-21 | 2020-02-28 | Univ Alicante | COMBINED FILTER FOR THE ELIMINATION OF TARS AND TOXIC COMPOUNDS OF TOBACCO SMOKE |
| WO2023112885A1 (en) * | 2021-12-13 | 2023-06-22 | 日本たばこ産業株式会社 | Filter to which gelled additive is added, flavor inhalation article provided with said filter, and flavor inhalation article package |
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| US3026226A (en) * | 1957-12-09 | 1962-03-20 | Eastman Kodak Co | Process of manufacturing filters |
| US3279476A (en) * | 1964-04-16 | 1966-10-18 | Beatrice Foods Co | Cigarette filter |
| US3368566A (en) * | 1964-06-17 | 1968-02-13 | Souren Z. Avediklan | Filter cigarette |
| GB1043080A (en) * | 1965-08-24 | 1966-09-21 | Adolf Hermann Fleischmann | Improvements in or relating to filter elements for tobacco smoke |
| US3405717A (en) * | 1966-11-15 | 1968-10-15 | American Filtrona Corp | Method of associating a filter section with a tobacco section or with one or more additional filter sections |
| GB1307363A (en) * | 1969-06-03 | 1973-02-21 | Dikstein S | Cigarettes and tips therefor |
| US3635226A (en) * | 1969-06-16 | 1972-01-18 | British American Tobacco Co | Tobacco-smoke filters |
| US3667478A (en) * | 1969-07-17 | 1972-06-06 | Nelson J Waterbury | Filter cigarette incorporating vitamin a |
| US3658069A (en) * | 1970-02-17 | 1972-04-25 | Stanford Research Inst | Filter for reducing the level of carbon monoxide in tobacco smoke |
| US4266561A (en) * | 1978-04-10 | 1981-05-12 | Brown & Williamson Tobacco Corporation | Tobacco smoke filtering compositions |
| US5038803A (en) * | 1988-02-04 | 1991-08-13 | Hercules Incorporated | Method and device for control of by-products from cigarette smoke |
| GB9122448D0 (en) * | 1991-10-23 | 1991-12-04 | Rothmans Int Tobacco | Filter tip cigarette |
| US5501238A (en) * | 1993-01-11 | 1996-03-26 | Von Borstel; Reid W. | Cigarette filter containing a humectant |
| DE69523345T2 (en) * | 1995-12-19 | 2002-09-05 | Filligent Ltd | MICROCAPSULES CONTAINING CIGARETTE FILTER |
| JP2000246095A (en) * | 1999-02-26 | 2000-09-12 | Mazda Motor Corp | Article containing adsorbent |
-
2002
- 2002-10-23 EP EP02770247A patent/EP1442667A4/en not_active Withdrawn
- 2002-10-23 UA UA20040504053A patent/UA75987C2/en unknown
- 2002-10-23 KR KR1020047005667A patent/KR100607539B1/en not_active IP Right Cessation
- 2002-10-23 CN CNB028213998A patent/CN1284492C/en not_active Expired - Fee Related
- 2002-10-23 JP JP2003539470A patent/JP3910175B2/en not_active Expired - Fee Related
- 2002-10-23 CA CA002464149A patent/CA2464149A1/en not_active Abandoned
- 2002-10-23 RU RU2004116341/12A patent/RU2264767C2/en not_active IP Right Cessation
- 2002-10-23 WO PCT/JP2002/010989 patent/WO2003037114A1/en not_active Application Discontinuation
- 2002-10-25 TW TW091125162A patent/TWI243026B/en not_active IP Right Cessation
-
2004
- 2004-04-29 US US10/834,026 patent/US20040200490A1/en not_active Abandoned
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106418661A (en) * | 2009-05-26 | 2017-02-22 | 菲尔特隆纳过滤产品开发私人有限公司 | Tobacco smoke filter |
| CN103070477A (en) * | 2013-01-16 | 2013-05-01 | 湖南中烟工业有限责任公司 | Application of aminopropanol compound |
| CN103504474A (en) * | 2013-10-16 | 2014-01-15 | 红云红河烟草(集团)有限责任公司 | Cigarette filter stick capable of effectively improving water-absorbing quality of filter core |
| CN103504474B (en) * | 2013-10-16 | 2015-06-17 | 红云红河烟草(集团)有限责任公司 | Cigarette filter stick capable of effectively improving water-absorbing quality of filter core |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20040058205A (en) | 2004-07-03 |
| TWI243026B (en) | 2005-11-11 |
| EP1442667A4 (en) | 2005-11-02 |
| CA2464149A1 (en) | 2003-05-08 |
| RU2004116341A (en) | 2005-03-10 |
| UA75987C2 (en) | 2006-06-15 |
| EP1442667A1 (en) | 2004-08-04 |
| JP3910175B2 (en) | 2007-04-25 |
| JPWO2003037114A1 (en) | 2005-02-17 |
| WO2003037114A1 (en) | 2003-05-08 |
| US20040200490A1 (en) | 2004-10-14 |
| CN1284492C (en) | 2006-11-15 |
| RU2264767C2 (en) | 2005-11-27 |
| KR100607539B1 (en) | 2006-08-02 |
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