EP1541043B1 - Filter for cigarette - Google Patents
Filter for cigarette Download PDFInfo
- Publication number
- EP1541043B1 EP1541043B1 EP03797591.9A EP03797591A EP1541043B1 EP 1541043 B1 EP1541043 B1 EP 1541043B1 EP 03797591 A EP03797591 A EP 03797591A EP 1541043 B1 EP1541043 B1 EP 1541043B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- filter
- cigarette
- arginine
- amino acid
- moisturizing agent
- 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
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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
Definitions
- the present invention relates to a cigarette filter capable of lowering the amount of aldehydes contained in the mainstream smoke of a cigarette.
- UK patent application GB 2 230 687 A discloses a highly efficient tobacco smoke filter which comprises a synergistic composition containing at least one of a compound having a high nucleophilic additivity toward formaldehyde, preferably D,L-lysine, glycine, D,L-cysteine, D,L-cystine, D,L-arginine, thioglycolic acid, dimedone, and homocysteine.
- a synergistic composition containing at least one of a compound having a high nucleophilic additivity toward formaldehyde, preferably D,L-lysine, glycine, D,L-cysteine, D,L-cystine, D,L-arginine, thioglycolic acid, dimedone, and homocysteine.
- UK patent application GB 2 077 737 A discloses a fibrous material for tobacco smoke filter consisting of cellulose fivers containing amino groups, wherein reactive groups are introduced into the cellulose molecule, and the resulting cellulose is reacted with ammonia, guanidine, and certain amino acids, diamines or polyethyleneimines.
- US Patent Number 5,860,428 describes a cigarette filter comprising a humectant, and optionally a surfactant, wherein the humectant absorbs moisture from the tobacco smoke for wet-filtration of the tobacco smoke.
- US Patent Number 2,968,306 provides a tobacco smoke filter adapted to remove aldehyde from tobacco smoke, wherein said filter comprises a bundle of crimped, continuous filaments that carry on their surface particles of an amino acid material which is a nontoxic, nonvolatile, substantially non-odorous solid, wherein said filter can also contain a polyhydroxy compound selected from the group consisting of glycerol, sorbitol and glycol compounds.
- An object of the present invention is to provide a cigarette filter, which permits effectively lowering the amount of aldehydes in the mainstream smoke of a cigarette while suppressing the detrimental effects such as degradation of tobacco taste.
- a cigarette filter according to an aspect of the present invention is characterized by comprising a filter medium containing a basic amino acid of arginine and a moisturizing agent of sodium lactate, wherein the arginine is contained in an amount of 3.5 mg or more and the ratio of arginine to sodium lactate falls within a range of between 1:1 and 1:2.
- a basic amino acid is an effective additive.
- the basic amino acid used in the present invention is arginine.
- Further described as amino acid or basic amino acid salt are, for example, arginine salt, lysine, lysine salt, histidine, histidine salt, ornithine, ornithine slat, citrulline, citrulline salt, hydroxyzine and hydroxizine salt.
- arginine and a salt thereof are admitted as food additives.
- the present inventors have also found that the aldehydes contained in the mainstream smoke of a cigarette can be more effectively removed if the basic amino acid is used in combination with a moisturizing agent.
- the moisturizing agent used in the present invention is sodium lactate. Further described as moisturizing agent are glycerin and sodium propionate.
- the aldehydes in the mainstream smoke of a cigarette are lowered by the mechanism given below.
- the aldehydes contained in the mainstream smoke of a cigarette are dissolved in water held by the moisturizing agent carried by the filter. Further, the aldehydes dissolved in the water are allowed to react with the basic amino acid carried by the filter so as to be trapped within the filter. It should be noted that the moisturizing agent functions to stably hold the water serving to dissolve the aldehydes.
- the basic amino acid should be contained in an amount of 3.5 mg or more, because it is difficult to obtain a sufficient effect of lowering the aldehydes where its amount is smaller than 3.5 mg.
- the ratio of the basic amino acid to the moisturizing agent is specified to fall within a range of between 1:1 and 1:2. If the ratio noted above fails to fall within the range noted above, it is difficult to obtain a sufficient effect of lowering the aldehydes.
- the filter medium For allowing the filter medium to contain the basic amino acid and the moisturizing agent, it is possible to employ such a method as spraying, dipping and roller transfer.
- the filter medium prefferably contains activated charcoal in addition to the basic amino acid and the moisturizing agent.
- the configuration of the filter tip may be a plain type, a dual type, a multi-segment type having triple or more segments, or a plug-space-plug type. It is possible for the basic amino acid and the moisturizing agent to be contained in a part or all the segments of the filter tip.
- the cigarette filter of the present invention may be a filter connected to the tobacco section of a cigarette as a mouth end component or a filter in the form of a cigarette holder.
- the derivative of 2,4-dinitrophenyl hydrazine (DNPH), a trapping substance is measured by high-speed liquid chromatography (HPLC).
- HPLC high-speed liquid chromatography
- the substances that can be measured simultaneously by this method are eight components consisting of formaldehyde, acetaldehyde, acetone, acrolein, propionaldehyde, crotonaldehyde, methyl ethyl ketone and n-butylaldehyde.
- the description is directed to formaldehyde among the aldehydes (carbonyl compounds) that are to be measured.
- a trapping solution is prepared by dissolving 9.51 g of 2,4-dinitrophenyl hydrazine (DNPH) in 1 L of acetonitrile, followed by adding 5.6 mL of 60% perchloric acid and subsequently diluting the resultant solution with ultra pure water to 2 L.
- DNPH 2,4-dinitrophenyl hydrazine
- a DNPH trapping solution 12 is put in a Drechsel type trap 11.
- the Drechsel type trap 11 has an inner volume of 250 mL, the amount of the DNPH trapping solution is 100 mL, and the dead volume is 150 mL.
- the Drechsel type trap 11 is put in an ice water bath 13 so as to be cooled.
- the lower end of a glass pipe 14 having a cigarette 1 mounted to the top end thereof is dipped in the trapping solution 12 within the Drechsel type trap 11.
- a glass pipe 15 and a Cambridge pad 16 are mounted to communicate with the dead volume of the Drechsel type trap 11, and an automatic smoking machine 17 is connected to the Cambridge pad 16.
- the cigarette 1 is attached to the glass pipe 14 so as to permit the cigarette 1 to be automatically smoked under the standard smoking conditions specified in ISO standards. To be more specific, the operation of sucking 35 mL of the smoke in a single puff for two seconds is repeated at an interval of 58 seconds for a single cigarette. While the mainstream smoke is being bubbled, eight components of carbonyl compounds are converted into derivatives of DNPH. Two cigarettes are used for the measurement.
- the derivatives thus formed are measured by HPLC.
- the trapping solution is filtered, followed by diluting the filtrated trapping solution with a Trizma Base solution (4 mL of trapping solution : 6 mL of Trizma Base solution). Then, the diluted solution is measured by HPLC.
- the measuring conditions for HPLC are as follows:
- the cigarette has a tobacco section 20 in which cut tobacco 21 is wrapped with a cigarette wrapper 22, and a filter section 30 in which a filter 31 is wrapped with a forming paper 32.
- the filter section 30 is connected to the tobacco section 20 by using a tipping paper 40. It is possible to use, for example, cellulose acetate tow as the filter material.
- a tobacco section is taken out by cutting the acetate filter from a 6 mg-tar cigarette available on the market, and the tobacco section is connected to the test filter so as to provide a sample.
- An atomizer is used for adding a basic amino acid or a basic amino acid salt and a moisturizing agent to the test filter.
- a 25 mm-long acetate filter was prepared as a base filter.
- a test filter for reference was prepared by allowing the base filter to contain 6.5 mg of water.
- test filters were prepared by allowing the base filter to contain 6.5 mg of water and 3.5 mg of an additive.
- the additive was selected from the group consisting of L-arginine, arginine glutamate, hydrazide formate, ammonia, acetamide and urea, classified as nitrogen-containing basic substances.
- FIG. 3 is a graph showing the results.
- L-arginine which is a basic amino acid
- arginine glutamate which is a basic amino acid salt
- the amount of L-arginine or arginine glutamate in the filter should preferably be 3.5 mg or more.
- the base filter was allowed to contain 3.5 mg of L-arginine and a varied amount of water.
- Each of the filters differing in the water content was connected to the tobacco section noted above to prepare a sample cigarette, and the delivery of formaldehyde ( ⁇ g/cig) in the mainstream smoke per cigarette was measured by the measuring method described above.
- FIG. 4 is a graph showing the results. As apparent from FIG. 4 , formaldehyde in the mainstream smoke can be effectively lowered if the water content of the filter is 5 mg or more in the case where the filter contains 3.5 mg of L-arginine.
- the base filter was allowed to contain L-arginine and glycerin used as a moisturizing agent so as to examine the increased amount of water in the filter.
- the L-arginine content was set at 3.5 mg, 7.0 mg or 10.5 mg.
- the glycerin content was set at 18 mg or 52 mg.
- FIG. 5 is a graph showing the results. FIG. 5 clearly supports that the amount of water held by the filter can be increased with increase in the amount of the moisturizing agent, i.e., glycerin.
- test filter for reference containing no moisturizing agent
- test filters were prepared by allowing the base filter to contain 3.5 mg of L-arginine alone.
- test filters were prepared by allowing the base filter to contain 3.5 mg of L-arginine and a moisturizing agent.
- the moisturizing agent was selected from the group consisting of glycerin, xylitol, sodium pantothenate, sodium PCA, sodium lactate, sodium propionate, sodium DL-malate, D-mannose and calcium chloride.
- Each test filter was connected to the tobacco section noted above to prepare a sample cigarette, and the delivery of formaldehyde ( ⁇ g/cig) in the mainstream smoke per cigarette was measured by the measuring method described above.
- FIG. 6 is a graph showing the results.
- glycerin, sodium lactate and sodium propionate which are used as the moisturizing agent, permit effectively lowering the delivery of formaldehyde, compared with the case where the base filter is allowed to contain L-arginine alone.
- These moisturizing agents are also suitable in view of the manufacturing process of the filter.
- FIG. 7 is a graph showing the results.
- FIG. 7 supports that the delivery of formaldehyde in the mainstream smoke can be effectively lowered by allowing the base filter to contain L-arginine and sodium lactate at a ratio of 1:1 or 1:2.
- the cigarette filter of the present invention makes it possible lower effectively the amount of aldehydes contained in the mainstream smoke of a cigarette.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Cigarettes, Filters, And Manufacturing Of Filters (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Description
- The present invention relates to a cigarette filter capable of lowering the amount of aldehydes contained in the mainstream smoke of a cigarette.
- Various chemical components are contained in the mainstream smoke puffed by a smoker in smoking a cigarette. It is difficult to adsorb and remove aldehydes represented by formaldehyde among these chemical components with an ordinary cigarette filter. Therefore, it is desired to remove the aldehydes from the mainstream smoke of the cigarette.
- It is attempted in the past to use various additives in the cigarette filter in order to adsorb and remove the aldehydes contained in the mainstream smoke of the cigarette. However, the use of the conventional additives gives rise to a problem of impairing tobacco taste.
- UK patent application
GB 2 230 687 A - Furthermore, UK patent application
GB 2 077 737 A -
US Patent Number 5,860,428 , on the other hand, describes a cigarette filter comprising a humectant, and optionally a surfactant, wherein the humectant absorbs moisture from the tobacco smoke for wet-filtration of the tobacco smoke. - Finally,
US Patent Number 2,968,306 provides a tobacco smoke filter adapted to remove aldehyde from tobacco smoke, wherein said filter comprises a bundle of crimped, continuous filaments that carry on their surface particles of an amino acid material which is a nontoxic, nonvolatile, substantially non-odorous solid, wherein said filter can also contain a polyhydroxy compound selected from the group consisting of glycerol, sorbitol and glycol compounds. - An object of the present invention is to provide a cigarette filter, which permits effectively lowering the amount of aldehydes in the mainstream smoke of a cigarette while suppressing the detrimental effects such as degradation of tobacco taste.
- A cigarette filter according to an aspect of the present invention is characterized by comprising a filter medium containing a basic amino acid of arginine and a moisturizing agent of sodium lactate, wherein the arginine is contained in an amount of 3.5 mg or more and the ratio of arginine to sodium lactate falls within a range of between 1:1 and 1:2.
-
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FIG. 1 schematically shows the construction of an apparatus for measuring formaldehyde contained in the mainstream smoke of a cigarette in the Examples of the present invention; -
FIG. 2 is a cross-sectional view showing the construction of a cigarette used in the Examples of the present invention; -
FIG. 3 is a graph showing the delivery of formaldehyde depending on the type of a basic substance added to a cigarette filter; -
FIG. 4 is a graph showing the relationship between the amount of water added to a cigarette filter together with L-arginine and the delivery of formaldehyde; -
FIG. 5 is a graph showing the relationship between the amount of glycerin added to a cigarette filter together with L-arginine and the increased amount of water in the cigarette filter; -
FIG. 6 is a graph showing the delivery of formaldehyde depending on the type of a moisturizing agent added to a cigarette filter together with L-arginine; and -
FIG. 7 is a graph showing the relationship between the ratio of L-arginine to glycerin added to a cigarette filter and the delivery of formaldehyde. - As a result of extensive research conducted from various viewpoints on additives in an attempt to lower aldehydes contained in the mainstream smoke of a cigarette, the present inventors have found that a basic amino acid is an effective additive. The basic amino acid used in the present invention is arginine. Further described as amino acid or basic amino acid salt are, for example, arginine salt, lysine, lysine salt, histidine, histidine salt, ornithine, ornithine slat, citrulline, citrulline salt, hydroxyzine and hydroxizine salt. Among these compounds, arginine and a salt thereof are admitted as food additives.
- The present inventors have also found that the aldehydes contained in the mainstream smoke of a cigarette can be more effectively removed if the basic amino acid is used in combination with a moisturizing agent. The moisturizing agent used in the present invention is sodium lactate. Further described as moisturizing agent are glycerin and sodium propionate.
- It is possible to use an ordinary filter medium such as acetate tow, a paper filter material, or a pulp unwoven fabric as the carrier (filter raw material) for the basic amino acid and the moisturizing agent.
- It is believed that, in the cigarette filter of the present invention, the aldehydes in the mainstream smoke of a cigarette are lowered by the mechanism given below. In the first step, the aldehydes contained in the mainstream smoke of a cigarette are dissolved in water held by the moisturizing agent carried by the filter. Further, the aldehydes dissolved in the water are allowed to react with the basic amino acid carried by the filter so as to be trapped within the filter. It should be noted that the moisturizing agent functions to stably hold the water serving to dissolve the aldehydes.
- In the cigarette filter of the present invention, the basic amino acid should be contained in an amount of 3.5 mg or more, because it is difficult to obtain a sufficient effect of lowering the aldehydes where its amount is smaller than 3.5 mg.
- Also, in the cigarette filter of the present invention, the ratio of the basic amino acid to the moisturizing agent is specified to fall within a range of between 1:1 and 1:2. If the ratio noted above fails to fall within the range noted above, it is difficult to obtain a sufficient effect of lowering the aldehydes.
- For allowing the filter medium to contain the basic amino acid and the moisturizing agent, it is possible to employ such a method as spraying, dipping and roller transfer.
- It is also possible to allow the filter medium to contain activated charcoal in addition to the basic amino acid and the moisturizing agent.
- The configuration of the filter tip may be a plain type, a dual type, a multi-segment type having triple or more segments, or a plug-space-plug type. It is possible for the basic amino acid and the moisturizing agent to be contained in a part or all the segments of the filter tip.
- The cigarette filter of the present invention may be a filter connected to the tobacco section of a cigarette as a mouth end component or a filter in the form of a cigarette holder.
- In the method of measuring the aldehydes contained in the mainstream smoke of a cigarette, which is used in the following Examples, the derivative of 2,4-dinitrophenyl hydrazine (DNPH), a trapping substance, is measured by high-speed liquid chromatography (HPLC). The substances that can be measured simultaneously by this method are eight components consisting of formaldehyde, acetaldehyde, acetone, acrolein, propionaldehyde, crotonaldehyde, methyl ethyl ketone and n-butylaldehyde. In the following Examples, the description is directed to formaldehyde among the aldehydes (carbonyl compounds) that are to be measured.
- In the first step, a trapping solution is prepared by dissolving 9.51 g of 2,4-dinitrophenyl hydrazine (DNPH) in 1 L of acetonitrile, followed by adding 5.6 mL of 60% perchloric acid and subsequently diluting the resultant solution with ultra pure water to 2 L.
- The construction of the measuring apparatus will now be described with reference to
FIG. 1 . As shown inFIG. 1 , aDNPH trapping solution 12 is put in aDrechsel type trap 11. The Drechseltype trap 11 has an inner volume of 250 mL, the amount of the DNPH trapping solution is 100 mL, and the dead volume is 150 mL. The Drechseltype trap 11 is put in anice water bath 13 so as to be cooled. The lower end of aglass pipe 14 having acigarette 1 mounted to the top end thereof is dipped in thetrapping solution 12 within the Drechseltype trap 11. Further, aglass pipe 15 and a Cambridgepad 16 are mounted to communicate with the dead volume of the Drechseltype trap 11, and anautomatic smoking machine 17 is connected to the Cambridgepad 16. - The
cigarette 1 is attached to theglass pipe 14 so as to permit thecigarette 1 to be automatically smoked under the standard smoking conditions specified in ISO standards. To be more specific, the operation of sucking 35 mL of the smoke in a single puff for two seconds is repeated at an interval of 58 seconds for a single cigarette. While the mainstream smoke is being bubbled, eight components of carbonyl compounds are converted into derivatives of DNPH. Two cigarettes are used for the measurement. - The derivatives thus formed are measured by HPLC. In the first step, the trapping solution is filtered, followed by diluting the filtrated trapping solution with a Trizma Base solution (4 mL of trapping solution : 6 mL of Trizma Base solution). Then, the diluted solution is measured by HPLC. The measuring conditions for HPLC are as follows:
- Column: HP LiChrospher 100RP-18(5µ)250 × 4 mm;
- Guard column: HP LiChrospher 100RP-18(5µ)4 × 4 mm;
- Column temperature: 30°C;
- Detection wavelength: DAD 356 nm;
- Injection amount: 20 µL;
- Mobile phase: Gradients with three phases (solution A: ultra pure aqueous solution containing 30% of acetonitrile, 10% of tetrahydrofuran and 1% of IPA; solution B: ultra pure aqueous solution containing 65% of acetonitrile, 1% of tetrahydrofuran and 1% of IPA; and solution C: 100% of acetonitrile).
- The construction of the cigarette used as a sample will now be described with reference to the cross-sectional view shown in
FIG. 2 . As shown inFIG. 2 , the cigarette has atobacco section 20 in which cuttobacco 21 is wrapped with acigarette wrapper 22, and afilter section 30 in which afilter 31 is wrapped with a formingpaper 32. Thefilter section 30 is connected to thetobacco section 20 by using atipping paper 40. It is possible to use, for example, cellulose acetate tow as the filter material. - In testing a cigarette prepared by using a test filter having a basic amino acid or a basic amino acid salt and a moisturizing agent added thereto, a tobacco section is taken out by cutting the acetate filter from a 6 mg-tar cigarette available on the market, and the tobacco section is connected to the test filter so as to provide a sample. An atomizer is used for adding a basic amino acid or a basic amino acid salt and a moisturizing agent to the test filter.
- A 25 mm-long acetate filter was prepared as a base filter. Also, a test filter for reference was prepared by allowing the base filter to contain 6.5 mg of water. Further, test filters were prepared by allowing the base filter to contain 6.5 mg of water and 3.5 mg of an additive. The additive was selected from the group consisting of L-arginine, arginine glutamate, hydrazide formate, ammonia, acetamide and urea, classified as nitrogen-containing basic substances.
- Each filter was connected to the tobacco section noted above to prepare a sample cigarette, and the delivery of formaldehyde (µg/cig) in the mainstream smoke per cigarette was measured by the measuring method described above.
FIG. 3 is a graph showing the results.FIG. 3 clearly supports that L-arginine, which is a basic amino acid, and arginine glutamate, which is a basic amino acid salt, are particularly effective for lowering the delivery of formaldehyde, compared with the case where the base filter is allowed to contain water alone. - Incidentally, it has been found that, in order to lower the delivery of formaldehyde, the amount of L-arginine or arginine glutamate in the filter should preferably be 3.5 mg or more.
- The base filter was allowed to contain 3.5 mg of L-arginine and a varied amount of water. Each of the filters differing in the water content was connected to the tobacco section noted above to prepare a sample cigarette, and the delivery of formaldehyde (µg/cig) in the mainstream smoke per cigarette was measured by the measuring method described above.
FIG. 4 is a graph showing the results. As apparent fromFIG. 4 , formaldehyde in the mainstream smoke can be effectively lowered if the water content of the filter is 5 mg or more in the case where the filter contains 3.5 mg of L-arginine. - The base filter was allowed to contain L-arginine and glycerin used as a moisturizing agent so as to examine the increased amount of water in the filter. The L-arginine content was set at 3.5 mg, 7.0 mg or 10.5 mg. The glycerin content was set at 18 mg or 52 mg.
FIG. 5 is a graph showing the results.FIG. 5 clearly supports that the amount of water held by the filter can be increased with increase in the amount of the moisturizing agent, i.e., glycerin. - A test filter for reference, containing no moisturizing agent, was prepared by allowing the base filter to contain 3.5 mg of L-arginine alone. Also, test filters were prepared by allowing the base filter to contain 3.5 mg of L-arginine and a moisturizing agent. The moisturizing agent was selected from the group consisting of glycerin, xylitol, sodium pantothenate, sodium PCA, sodium lactate, sodium propionate, sodium DL-malate, D-mannose and calcium chloride. Each test filter was connected to the tobacco section noted above to prepare a sample cigarette, and the delivery of formaldehyde (µg/cig) in the mainstream smoke per cigarette was measured by the measuring method described above.
FIG. 6 is a graph showing the results. As apparent fromFIG. 6 , glycerin, sodium lactate and sodium propionate, which are used as the moisturizing agent, permit effectively lowering the delivery of formaldehyde, compared with the case where the base filter is allowed to contain L-arginine alone. These moisturizing agents are also suitable in view of the manufacturing process of the filter. - Various test filters in which the base filter contained 3.5 mg of L-arginine and a varied amount of sodium lactate used as the moisturizing agent were prepared. The ratio of sodium lactate to L-arginine was set at 1:1, 1:2 or 1:3.
- Each test filter was connected to the tobacco section noted above to prepare a sample cigarette, and the delivery of formaldehyde (µg/cig) in the mainstream smoke per cigarette was measured by the measuring method described above.
FIG. 7 is a graph showing the results.FIG. 7 supports that the delivery of formaldehyde in the mainstream smoke can be effectively lowered by allowing the base filter to contain L-arginine and sodium lactate at a ratio of 1:1 or 1:2. - The cigarette filter of the present invention makes it possible lower effectively the amount of aldehydes contained in the mainstream smoke of a cigarette.
Claims (1)
- A cigarette filter, comprising a filter medium containing a basic amino acid of arginine, characterized by further containing a moisturizing agent of sodium lactate and characterized in that the arginine is contained in an amount of 3.5 mg or more and the ratio of arginine to sodium lactate falls within a range of between 1:1 and 1:2.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002273287 | 2002-09-19 | ||
JP2002273287 | 2002-09-19 | ||
PCT/JP2003/011724 WO2004026053A1 (en) | 2002-09-19 | 2003-09-12 | Filter for cigarette |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1541043A1 EP1541043A1 (en) | 2005-06-15 |
EP1541043A4 EP1541043A4 (en) | 2010-10-20 |
EP1541043B1 true EP1541043B1 (en) | 2014-03-05 |
Family
ID=32024952
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03797591.9A Expired - Lifetime EP1541043B1 (en) | 2002-09-19 | 2003-09-12 | Filter for cigarette |
Country Status (15)
Country | Link |
---|---|
EP (1) | EP1541043B1 (en) |
JP (1) | JP4224459B2 (en) |
KR (1) | KR100641726B1 (en) |
CN (1) | CN100496313C (en) |
AU (1) | AU2003264421A1 (en) |
CA (1) | CA2499648C (en) |
DK (1) | DK1541043T3 (en) |
ES (1) | ES2450926T3 (en) |
HK (1) | HK1079059A1 (en) |
MY (1) | MY135473A (en) |
PT (1) | PT1541043E (en) |
RU (1) | RU2291658C2 (en) |
TW (1) | TWI281380B (en) |
UA (1) | UA78604C2 (en) |
WO (1) | WO2004026053A1 (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FI120526B (en) * | 2007-05-16 | 2009-11-30 | Biohit Oyj | Filter for tobacco product |
WO2009031248A1 (en) * | 2007-09-05 | 2009-03-12 | Daicel Chemical Industries, Ltd. | Composition containing amino compound and silica gel, and tobacco filter |
WO2009031246A1 (en) * | 2007-09-05 | 2009-03-12 | Daicel Chemical Industries, Ltd. | Tobacco filter material and tobacco filter |
TWI629008B (en) * | 2012-10-22 | 2018-07-11 | 菲利浦莫里斯製品股份有限公司 | Filter segment comprising an acetate salt and glycerine |
CN103099310A (en) * | 2013-02-04 | 2013-05-15 | 红云红河烟草(集团)有限责任公司 | Tobacco humectant and application thereof |
GB201412752D0 (en) | 2014-07-17 | 2014-09-03 | Nicoventures Holdings Ltd | Electronic vapour provision system |
KR102343888B1 (en) * | 2018-01-31 | 2021-12-27 | 주식회사 케이티앤지 | Aerosols generating system |
WO2023218713A1 (en) * | 2022-05-13 | 2023-11-16 | 日本たばこ産業株式会社 | Filter, smoking article, and method for reducing amount of specific components included in smoke flow or aerosol |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2968306A (en) | 1956-02-29 | 1961-01-17 | Eastman Kodak Co | Tobacco smoke filter capable of selective removal of aldehydes |
DE3019163C2 (en) | 1980-05-20 | 1984-07-26 | B.A.T. Cigaretten-Fabriken Gmbh, 2000 Hamburg | Use of cellulose fibers containing amino groups as a material for tobacco smoke filters |
JPH0775535B2 (en) * | 1986-03-31 | 1995-08-16 | 三井東圧化学株式会社 | Filter for cigarette combustion gas |
HU201865B (en) | 1989-04-28 | 1991-01-28 | Pecsi Dohanygyar | Tobacco-smoke filter of high efficiency |
US5501238A (en) * | 1993-01-11 | 1996-03-26 | Von Borstel; Reid W. | Cigarette filter containing a humectant |
ATE206880T1 (en) * | 1995-12-19 | 2001-11-15 | Craig Lesser | CIGARETTE FILTER CONTAINING MICRO CAPSULES |
-
2003
- 2003-09-12 JP JP2004537558A patent/JP4224459B2/en not_active Expired - Fee Related
- 2003-09-12 CA CA002499648A patent/CA2499648C/en not_active Expired - Fee Related
- 2003-09-12 RU RU2005111547/12A patent/RU2291658C2/en active
- 2003-09-12 ES ES03797591.9T patent/ES2450926T3/en not_active Expired - Lifetime
- 2003-09-12 WO PCT/JP2003/011724 patent/WO2004026053A1/en active Application Filing
- 2003-09-12 CN CNB038221535A patent/CN100496313C/en not_active Expired - Fee Related
- 2003-09-12 DK DK03797591.9T patent/DK1541043T3/en active
- 2003-09-12 EP EP03797591.9A patent/EP1541043B1/en not_active Expired - Lifetime
- 2003-09-12 KR KR20057004499A patent/KR100641726B1/en active IP Right Grant
- 2003-09-12 PT PT03797591T patent/PT1541043E/en unknown
- 2003-09-12 AU AU2003264421A patent/AU2003264421A1/en not_active Abandoned
- 2003-09-18 MY MYPI20033569 patent/MY135473A/en unknown
- 2003-09-18 TW TW92125709A patent/TWI281380B/en not_active IP Right Cessation
- 2003-12-09 UA UAA200503585A patent/UA78604C2/en unknown
-
2005
- 2005-12-07 HK HK05111185.7A patent/HK1079059A1/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
WO2004026053A1 (en) | 2004-04-01 |
RU2291658C2 (en) | 2007-01-20 |
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DK1541043T3 (en) | 2014-03-17 |
EP1541043A4 (en) | 2010-10-20 |
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KR100641726B1 (en) | 2006-11-10 |
EP1541043A1 (en) | 2005-06-15 |
MY135473A (en) | 2008-04-30 |
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JPWO2004026053A1 (en) | 2006-01-12 |
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RU2005111547A (en) | 2005-09-20 |
AU2003264421A1 (en) | 2004-04-08 |
CA2499648A1 (en) | 2004-04-01 |
TW200406161A (en) | 2004-05-01 |
PT1541043E (en) | 2014-04-10 |
CN100496313C (en) | 2009-06-10 |
KR20050057365A (en) | 2005-06-16 |
TWI281380B (en) | 2007-05-21 |
ES2450926T3 (en) | 2014-03-25 |
CN1681405A (en) | 2005-10-12 |
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