US3424172A - Cigarette filters - Google Patents
Cigarette filters Download PDFInfo
- Publication number
- US3424172A US3424172A US550124A US3424172DA US3424172A US 3424172 A US3424172 A US 3424172A US 550124 A US550124 A US 550124A US 3424172D A US3424172D A US 3424172DA US 3424172 A US3424172 A US 3424172A
- Authority
- US
- United States
- Prior art keywords
- acid
- ester
- cellulose
- filters
- cigarette
- 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
Links
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
- This invention relates to cigarette filters.
- Cigarette filters are conventionally made of cellulose acetate or another fibrous cellulose ester and it has been proposed that the absorbency of such filters should be increased by impregnating the fibrous mate-rial with suitable absorbing agents. Many absorbing agents have the disadvantage, however, that they alter the flavour of the smoke.
- cellulose esters having residues containing free acid groups, in place of the hydroxyl groups of the cellulose should be used.
- acid phthalate cellulose acetate, acid succinate cellulose, acid citrate cellulose or acid phosphate cellulose have a good absorbency for alkaline substances in smoke but, at the same time, the fibres are more brittle than those of cellulose acetate and are therefore less suitable for use as cigarette filters. Also, the fibres tend to age more quickly with the result that during the use of such filters, pieces of fibre break off and ibecome entrained with the smoke.
- a cigarette filter of improved efiiciency is obtained by treating the fibrous cellulosic material with an acidic carboxylic acid alkyl ester.
- the cigarette filters according to the present invention comprise a fibrous cellulosic mass impregnated with an acidic carboxylic acid alkyl ester.
- the fibrous cellulosic mass will be composed of a cellulose ester, more generally cellulose acetate.
- the filter may also contain glyceryl triacetate (triacetin), preferably in a proportion of 3 parts by weight of the acid ester to parts by weight of glycerin triacetate.
- triacetin glyceryl triacetate
- All organic polycarboxylic acids which are physiologioally acceptable may be used for the preparation of the acid esters, for example, citric acid, tartaric acid, succinic acid, malic acid or saccharic acid.
- the acid is partially esterified with a physiologically acceptable alcohol such as, in particular, ethanol, to leave at least one free carboxyl group.
- Acids which contain free hydroxyl groups or hydroxyl groups esterified with monobasic organic acids, such as acetic or propionic acid, or polycarboxylic acids may be used.
- the acid ester is preferably used in finely-divided form, mixed with glycerin triacetate if desired, and is applied to the outer surfaces of the fibres to form a film-like coating on the fibres.
- the coating may be applied by spraying or by passing the fibres through a bath of the coating material.
- the filters containing the acid esters have an improved absorption efiiciency, particularly with respect to the removal of alkaline components such as nicotine, from the smoke and this is effected without the free hydroxyl groupcontaining additive introduced by the treatment being entrained in the smoke and inhaled by the smoker. This is believed to be due to the fact that the additive is simultaneously a cross-linking and hardening agent for the cellulose acetate and that it enters into a close bond with the external surface of the cellulose fibres.
- the additives were added to triacetin (30% of the additive by weight) and the mixture used to impregnate the filter in proportion of 9% with respect to the weight of the filter.
- the degree of direct absorption for nicotine was determined in accordance with the standard procedure of the Cigarette Industry Association.
- a cigarette filter comprising a mass of cellulose acetate fibres impregnated with 'an acidic carboxylic acid alkyl ester.
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)
- Paper (AREA)
Description
United States Patent Ofi ice Patented Jan. 28, 1969 US. or. 131-267 3 Claims Int. c1. A24f 13/06 ABSTRACT OF THE DISCLOSURE A cigarette filter made of cellulose ester filaments, which in order to increase their absorbing capacity, are impregnated with an acidic carboxylic acid alkyl ester.
This invention relates to cigarette filters.
Cigarette filters are conventionally made of cellulose acetate or another fibrous cellulose ester and it has been proposed that the absorbency of such filters should be increased by impregnating the fibrous mate-rial with suitable absorbing agents. Many absorbing agents have the disadvantage, however, that they alter the flavour of the smoke.
It has also been proposed to modify the cellulose material itself for the same purpose. Thus, it has been proposed that cellulose esters having residues containing free acid groups, in place of the hydroxyl groups of the cellulose, should be used. For example, acid phthalate cellulose acetate, acid succinate cellulose, acid citrate cellulose or acid phosphate cellulose have a good absorbency for alkaline substances in smoke but, at the same time, the fibres are more brittle than those of cellulose acetate and are therefore less suitable for use as cigarette filters. Also, the fibres tend to age more quickly with the result that during the use of such filters, pieces of fibre break off and ibecome entrained with the smoke.
It is therefore an object of the present invention to provide a cigarette filter of improved efiiciency.
I have now discovered that a cigarette filter of improved efiiciency is obtained by treating the fibrous cellulosic material with an acidic carboxylic acid alkyl ester.
Thus, the cigarette filters according to the present invention comprise a fibrous cellulosic mass impregnated with an acidic carboxylic acid alkyl ester. Generally, the fibrous cellulosic mass will be composed of a cellulose ester, more generally cellulose acetate.
In addition to the acid ester the filter may also contain glyceryl triacetate (triacetin), preferably in a proportion of 3 parts by weight of the acid ester to parts by weight of glycerin triacetate.
All organic polycarboxylic acids which are physiologioally acceptable may be used for the preparation of the acid esters, for example, citric acid, tartaric acid, succinic acid, malic acid or saccharic acid. The acid is partially esterified with a physiologically acceptable alcohol such as, in particular, ethanol, to leave at least one free carboxyl group. Acids which contain free hydroxyl groups or hydroxyl groups esterified with monobasic organic acids, such as acetic or propionic acid, or polycarboxylic acids may be used.
The acid ester is preferably used in finely-divided form, mixed with glycerin triacetate if desired, and is applied to the outer surfaces of the fibres to form a film-like coating on the fibres. The coating may be applied by spraying or by passing the fibres through a bath of the coating material.
The filters containing the acid esters have an improved absorption efiiciency, particularly with respect to the removal of alkaline components such as nicotine, from the smoke and this is effected without the free hydroxyl groupcontaining additive introduced by the treatment being entrained in the smoke and inhaled by the smoker. This is believed to be due to the fact that the additive is simultaneously a cross-linking and hardening agent for the cellulose acetate and that it enters into a close bond with the external surface of the cellulose fibres.
In the following table, examples are given (by way of illustration only) to show the effect of the acid esters used in accordance with the invention. The absorbency of filters treated with various acid esters was compared with conventional filters. The tensile strength of the filters is also given.
TABLE Filter Specific Degree of Additive length Titer tensile nicotine (mm) (den) strength absorption (mm. WS) (percent) (1) Citric acid diethyl ester 14 5/78. 000 30 38 (2) Triacetin alone (comparison) 14 5/78. 000 29 29 (3) Diacetyl tartaric acid monoethyl ester 14 3/58. 000 33. 3 41. 2 (4) Malonic acid monoethyl ester 14 3/58. 000 33. 4 40. 2 (5) Tartaric acid monoethyl ester 14 3/58. 000 35. 1 41. 5 (6) Malic acid monoethyl ester 14 3/58. 000 32. 9 39. 6 (7) Aeetyl citric acid ethyl ester 14 3/58. 000 33. 4 41. 2 (8) Triacetin alone (comparison) 14 3/58. 000 34. 1 31. 5 (9) Maionic acid monoethyl ester 14 5/78. 000 30. 7 38. 2 (10) Triaeetin alone (comparison) 14 5/78. 000 26. 4 29. 8
The additives were added to triacetin (30% of the additive by weight) and the mixture used to impregnate the filter in proportion of 9% with respect to the weight of the filter.
The degree of direct absorption for nicotine was determined in accordance with the standard procedure of the Cigarette Industry Association.
The direct absorption of nicotine is shown in the above table to be rather more than 25% higher than that of conventional filters, without the mechanical properties of the filter being deleteriously affected.
We claim:
1. A cigarette filter comprising a mass of cellulose acetate fibres impregnated with 'an acidic carboxylic acid alkyl ester.
2. The structure as set forth in claim 1 in which the ester is diethyl citrate.
3. The structure as set forth in claim 1 in which the cellulose acetate fibres are impregnated both with the acid ester and with glyceryl triacetate.
References Cited UNITED STATES PATENTS 3,025,861 3/1962 Cobb 131267 3,144,024 8/1964 Eichwaldetal 131-267 3,285,255 11/1966 Touey a a1 131-267 FOREIGN PATENTS 570,399 2/1959 Canada.
SAMUEL KO'REN, Primary Examiner.
D. J. DONOHUE, Assistant Examiner.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DER40626A DE1300854B (en) | 1965-05-14 | 1965-05-14 | Filters for cigarettes |
Publications (1)
Publication Number | Publication Date |
---|---|
US3424172A true US3424172A (en) | 1969-01-28 |
Family
ID=7406120
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US550124A Expired - Lifetime US3424172A (en) | 1965-05-14 | 1966-05-16 | Cigarette filters |
Country Status (9)
Country | Link |
---|---|
US (1) | US3424172A (en) |
BE (1) | BE680932A (en) |
CH (1) | CH480810A (en) |
DE (1) | DE1300854B (en) |
DK (1) | DK119757B (en) |
FI (1) | FI42685B (en) |
GB (1) | GB1079827A (en) |
LU (1) | LU51086A1 (en) |
NL (1) | NL154102B (en) |
Cited By (61)
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---|---|---|---|---|
US4153064A (en) * | 1975-07-11 | 1979-05-08 | Daicel Ltd. | Cigarette filters |
US4964426A (en) * | 1988-09-28 | 1990-10-23 | Eastman Kodak Company | Tobacco smoke filters and process for production thereof |
US5141006A (en) * | 1990-02-28 | 1992-08-25 | Eastman Kodak Company | Tobacco smoke filter material and process for production thereof |
US5150723A (en) * | 1988-09-28 | 1992-09-29 | Eastman Kodak Company | Process for the production of tobacco smoke filters |
US5817159A (en) * | 1996-12-31 | 1998-10-06 | Cahill; Scott A. | Filter with interpenetrating polymer network that biodegrades |
WO2007038053A1 (en) | 2005-09-23 | 2007-04-05 | R.J. Reynolds Tobacco Company | Equipment for insertion of objects into smoking articles |
US20080202540A1 (en) * | 2007-02-26 | 2008-08-28 | R. J. Reynolds Tobacco Company | Cigarette Customization Apparatus and Associated Method |
US20080245377A1 (en) * | 2007-04-04 | 2008-10-09 | R.J. Reynolds Tobacco Company | Cigarette comprising dark-cured tobacco |
US20080302373A1 (en) * | 2007-06-11 | 2008-12-11 | R.J. Reynolds Tobacco Company | Apparatus for Inserting Objects into a Filter Component of a Smoking Article, and Associated Method |
US20100059074A1 (en) * | 2008-09-05 | 2010-03-11 | R. J. Reynolds Tobacco Company | Inspection System for a Smoking Article Having an Object Inserted Therein, and Associated Method |
US20100101589A1 (en) * | 2008-10-28 | 2010-04-29 | John Larkin Nelson | Apparatus for enhancing a filter component of a smoking article, and associated method |
US20100108081A1 (en) * | 2008-10-31 | 2010-05-06 | Leigh Ann Blevins Joyce | Filtered cigarette with flavored tipping material |
US20100108084A1 (en) * | 2008-10-31 | 2010-05-06 | Norman Alan B | Filtered cigarette with diffuse tipping material |
US20100186351A1 (en) * | 2009-01-26 | 2010-07-29 | R.J. Reynolds Tobacco Company | Method and apparatus for customizing cigarette packages |
WO2010098933A1 (en) | 2009-02-25 | 2010-09-02 | R.J. Reynolds Tobacco Company | Cigarette filter comprising a degradable fiber |
WO2010107756A1 (en) | 2009-03-19 | 2010-09-23 | R. J. Reynolds Tobacco Company | Apparatus for inserting objects into a filter component of a smoking article, and associated method |
US20110011412A1 (en) * | 2009-07-14 | 2011-01-20 | Aiger Engineering, Ltd. | Apparatus and method for assembly of multi-segment rod-like articles |
US20110036366A1 (en) * | 2009-08-11 | 2011-02-17 | R.J. Reynolds Tobacco Company | Degradable filter element |
US20110108044A1 (en) * | 2009-11-11 | 2011-05-12 | R.J. Reynolds Tobacco Company | Filter element comprising smoke-altering material |
US20110162665A1 (en) * | 2010-01-07 | 2011-07-07 | Aiger Group Ag | Method, system and apparatus for registration of different objects in rod shaped articles |
US20110162662A1 (en) * | 2010-01-05 | 2011-07-07 | Aiger Group Ag | Apparatus and method for insertion of capsules into filter tows |
US20110169942A1 (en) * | 2010-01-13 | 2011-07-14 | R.J.Reynolds Tobacco Company | Filtered smoking article inspection system, and associated method |
WO2011140430A1 (en) | 2010-05-07 | 2011-11-10 | R. J. Reynolds Tobacco Company | Filtered cigarette with modifiable sensory characteristics |
US8079369B2 (en) | 2008-05-21 | 2011-12-20 | R.J. Reynolds Tobacco Company | Method of forming a cigarette filter rod member |
WO2012003092A1 (en) | 2010-06-30 | 2012-01-05 | R.J. Reynolds Tobacco Company | Degradable filter element for smoking article |
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WO2012012152A1 (en) | 2010-06-30 | 2012-01-26 | R. J. Reynolds Tobacco Company | Degradable adhesive compositions for smoking articles |
WO2012016051A2 (en) | 2010-07-30 | 2012-02-02 | R. J. Reynolds Tobacco Company | Filter element comprising multifunctional fibrous smoke-altering material |
WO2012068108A1 (en) | 2010-11-16 | 2012-05-24 | R. J. Reynolds Tobacco Company | Cigarette package inspection system, and associated method |
US8186359B2 (en) | 2008-02-01 | 2012-05-29 | R. J. Reynolds Tobacco Company | System for analyzing a filter element associated with a smoking article, and associated method |
EP2494875A2 (en) | 2006-08-04 | 2012-09-05 | R.J. Reynolds Tobacco Company | Filtered cigarette possessing tipping material |
WO2012166302A2 (en) | 2011-05-31 | 2012-12-06 | R.J. Reynolds Tobacco Company | Coated paper filter |
EP2537427A1 (en) | 2008-05-21 | 2012-12-26 | R.J. Reynolds Tobacco Company | Cigarette filter having composite fiber structures |
WO2013009410A1 (en) | 2011-07-14 | 2013-01-17 | R. J. Reynolds Tobacco Company | Segmented cigarette filter for selective smoke filtration |
WO2013019413A2 (en) | 2011-08-01 | 2013-02-07 | R.J. Reynolds Tobacco Company | Degradable cigarette filter |
WO2013019616A2 (en) | 2011-07-29 | 2013-02-07 | R. J. Reynolds Tobacco Company | Plasticizer composition for degradable polyester filter tow |
WO2013043806A2 (en) | 2011-09-23 | 2013-03-28 | R. J. Reynolds Tobacco Company | Mixed fiber product for use in the manufacture of cigarette filter elements and related methods, systems, and apparatuses |
WO2013049169A1 (en) | 2011-09-29 | 2013-04-04 | R. J. Reynolds Tobacco Company | Apparatus for inserting microcapsule objects into a filter element of a smoking article, and associated method |
US8475348B2 (en) | 2010-09-28 | 2013-07-02 | Aiger Group Ag | Apparatus and method for assembly of multi-segment rod-like articles |
WO2013101457A1 (en) | 2011-12-28 | 2013-07-04 | R.J. Reynolds Tobacco Company | Method of filter assembly for smoking article |
WO2013101458A1 (en) | 2011-12-28 | 2013-07-04 | R.J. Reynolds Tobacco Company | Method of tipping for smoking article |
US8622882B2 (en) | 2010-09-27 | 2014-01-07 | Aiger Group Ag | Apparatus and method for insertion of capsules into filter tows |
WO2014018645A1 (en) | 2012-07-25 | 2014-01-30 | R. J. Reynolds Tobacco Company | Mixed fiber sliver for use in the manufacture of cigarette filter elements |
WO2014078290A2 (en) | 2012-11-13 | 2014-05-22 | R. J. Reynolds Tobacco Company | System for analyzing a smoking article filter associated with a smoking article, and associated method |
US20140196728A1 (en) * | 2011-07-07 | 2014-07-17 | Ahmad Fashihul Lisan | Tobacco smoke filter and method of production |
US8831764B2 (en) | 2011-10-17 | 2014-09-09 | R. J. Reynolds Tobacco Company | Cigarette package coding system and associated method |
WO2014159982A1 (en) | 2013-03-14 | 2014-10-02 | R. J. Reynolds Tobacco Company | Electronic smoking article with improved storage means |
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US9119419B2 (en) | 2012-10-10 | 2015-09-01 | R.J. Reynolds Tobacco Company | Filter material for a filter element of a smoking article, and associated system and method |
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US9289012B2 (en) | 2011-07-29 | 2016-03-22 | R. J. Reynolds Tobacco Company | Plasticizer composition for degradable polyester filter tow |
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US10104906B1 (en) | 2012-09-17 | 2018-10-23 | Tannpapier Gmbh | Mouthpiece lining paper |
WO2018224986A2 (en) | 2017-06-07 | 2018-12-13 | Rai Strategic Holdings, Inc. | Fibrous filtration material for electronic smoking article |
US10524500B2 (en) | 2016-06-10 | 2020-01-07 | R.J. Reynolds Tobacco Company | Staple fiber blend for use in the manufacture of cigarette filter elements |
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US11957163B2 (en) | 2011-04-08 | 2024-04-16 | R.J. Reynolds Tobacco Company | Multi-segment filter element including smoke-altering flavorant |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3820089A1 (en) * | 1988-06-13 | 1989-12-14 | Bat Cigarettenfab Gmbh | METHOD FOR IMPREGNATING FIBERS OF A TOBACCO FUEL FILTER WITH DI- OR POLYCARBONIC ACIDS OR. ANHYDRIDES THERE |
DE19541873A1 (en) * | 1995-11-09 | 1997-05-15 | Rhodia Ag Rhone Poulenc | Filter cigarette |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA570399A (en) * | 1959-02-10 | Eastman Kodak Company | Filters for tobacco smoke comprising cellulose esters and ethers | |
US3025861A (en) * | 1959-07-02 | 1962-03-20 | Eastman Kodak Co | Nonchanneling tobacco smoke filament filter |
US3144024A (en) * | 1960-04-11 | 1964-08-11 | Darby Food Corp | Impregnated filter means for tobacco articles |
US3285255A (en) * | 1965-06-07 | 1966-11-15 | Eastman Kodak Co | Polyolefin filter |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3026226A (en) * | 1957-12-09 | 1962-03-20 | Eastman Kodak Co | Process of manufacturing filters |
-
1965
- 1965-05-14 DE DER40626A patent/DE1300854B/en active Pending
-
1966
- 1966-05-12 LU LU51086A patent/LU51086A1/xx unknown
- 1966-05-12 FI FI1267/66A patent/FI42685B/fi active
- 1966-05-12 BE BE680932D patent/BE680932A/xx unknown
- 1966-05-13 GB GB21351/66A patent/GB1079827A/en not_active Expired
- 1966-05-13 CH CH700066A patent/CH480810A/en not_active IP Right Cessation
- 1966-05-13 NL NL666606594A patent/NL154102B/en not_active IP Right Cessation
- 1966-05-14 DK DK248066AA patent/DK119757B/en unknown
- 1966-05-16 US US550124A patent/US3424172A/en not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA570399A (en) * | 1959-02-10 | Eastman Kodak Company | Filters for tobacco smoke comprising cellulose esters and ethers | |
US3025861A (en) * | 1959-07-02 | 1962-03-20 | Eastman Kodak Co | Nonchanneling tobacco smoke filament filter |
US3144024A (en) * | 1960-04-11 | 1964-08-11 | Darby Food Corp | Impregnated filter means for tobacco articles |
US3285255A (en) * | 1965-06-07 | 1966-11-15 | Eastman Kodak Co | Polyolefin filter |
Cited By (112)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4153064A (en) * | 1975-07-11 | 1979-05-08 | Daicel Ltd. | Cigarette filters |
US4964426A (en) * | 1988-09-28 | 1990-10-23 | Eastman Kodak Company | Tobacco smoke filters and process for production thereof |
US5150723A (en) * | 1988-09-28 | 1992-09-29 | Eastman Kodak Company | Process for the production of tobacco smoke filters |
US5141006A (en) * | 1990-02-28 | 1992-08-25 | Eastman Kodak Company | Tobacco smoke filter material and process for production thereof |
US5817159A (en) * | 1996-12-31 | 1998-10-06 | Cahill; Scott A. | Filter with interpenetrating polymer network that biodegrades |
US5998500A (en) * | 1996-12-31 | 1999-12-07 | Cahill; Scott A. | Method of making a filter with interpenetrating polymer network that biodegrades |
US11383477B2 (en) | 2005-09-23 | 2022-07-12 | R.J. Reynolds Tobacco Company | Equipment for insertion of objects into smoking articles |
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US20090090372A1 (en) * | 2005-09-23 | 2009-04-09 | R.J. Reynolds Tobacco Company | Equipment for Insertion of Objects into Smoking Articles |
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US9028385B2 (en) | 2005-09-23 | 2015-05-12 | R.J. Reynolds Tobacco Company | Equipment for insertion of objects into smoking articles |
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US8171941B2 (en) | 2007-02-26 | 2012-05-08 | R. J. Reynolds Tobacco Company | Cigarette customization apparatus and associated method |
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US8186360B2 (en) | 2007-04-04 | 2012-05-29 | R.J. Reynolds Tobacco Company | Cigarette comprising dark air-cured tobacco |
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US7972254B2 (en) | 2007-06-11 | 2011-07-05 | R.J. Reynolds Tobacco Company | Apparatus for inserting objects into a filter component of a smoking article, and associated method |
US8186359B2 (en) | 2008-02-01 | 2012-05-29 | R. J. Reynolds Tobacco Company | System for analyzing a filter element associated with a smoking article, and associated method |
US8496011B2 (en) | 2008-05-21 | 2013-07-30 | R.J. Reynolds Tobacco Company | Apparatus for forming a filter component of a smoking article |
US8079369B2 (en) | 2008-05-21 | 2011-12-20 | R.J. Reynolds Tobacco Company | Method of forming a cigarette filter rod member |
EP2537427A1 (en) | 2008-05-21 | 2012-12-26 | R.J. Reynolds Tobacco Company | Cigarette filter having composite fiber structures |
US20100059074A1 (en) * | 2008-09-05 | 2010-03-11 | R. J. Reynolds Tobacco Company | Inspection System for a Smoking Article Having an Object Inserted Therein, and Associated Method |
US20100101589A1 (en) * | 2008-10-28 | 2010-04-29 | John Larkin Nelson | Apparatus for enhancing a filter component of a smoking article, and associated method |
US8308623B2 (en) | 2008-10-28 | 2012-11-13 | R.J. Reynolds Tobacco Company | Apparatus for enhancing a filter component of a smoking article, and associated method |
US20100108081A1 (en) * | 2008-10-31 | 2010-05-06 | Leigh Ann Blevins Joyce | Filtered cigarette with flavored tipping material |
US20100108084A1 (en) * | 2008-10-31 | 2010-05-06 | Norman Alan B | Filtered cigarette with diffuse tipping material |
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US20100186351A1 (en) * | 2009-01-26 | 2010-07-29 | R.J. Reynolds Tobacco Company | Method and apparatus for customizing cigarette packages |
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US20110011412A1 (en) * | 2009-07-14 | 2011-01-20 | Aiger Engineering, Ltd. | Apparatus and method for assembly of multi-segment rod-like articles |
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WO2011060008A1 (en) | 2009-11-11 | 2011-05-19 | R. J. Reynolds Tobacco Company | Filter element comprising smoke-altering material |
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US20110108044A1 (en) * | 2009-11-11 | 2011-05-12 | R.J. Reynolds Tobacco Company | Filter element comprising smoke-altering material |
US20110162662A1 (en) * | 2010-01-05 | 2011-07-07 | Aiger Group Ag | Apparatus and method for insertion of capsules into filter tows |
US20110162665A1 (en) * | 2010-01-07 | 2011-07-07 | Aiger Group Ag | Method, system and apparatus for registration of different objects in rod shaped articles |
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WO2012166302A2 (en) | 2011-05-31 | 2012-12-06 | R.J. Reynolds Tobacco Company | Coated paper filter |
RU2797418C2 (en) * | 2011-07-07 | 2023-06-05 | Эссентра Филтер Продактс Девелопмент Ко. Пти. Лтд | Tobacco smoke filter |
US20140196728A1 (en) * | 2011-07-07 | 2014-07-17 | Ahmad Fashihul Lisan | Tobacco smoke filter and method of production |
WO2013009410A1 (en) | 2011-07-14 | 2013-01-17 | R. J. Reynolds Tobacco Company | Segmented cigarette filter for selective smoke filtration |
US9149070B2 (en) | 2011-07-14 | 2015-10-06 | R.J. Reynolds Tobacco Company | Segmented cigarette filter for selective smoke filtration |
WO2013019616A2 (en) | 2011-07-29 | 2013-02-07 | R. J. Reynolds Tobacco Company | Plasticizer composition for degradable polyester filter tow |
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US9289012B2 (en) | 2011-07-29 | 2016-03-22 | R. J. Reynolds Tobacco Company | Plasticizer composition for degradable polyester filter tow |
WO2013019413A2 (en) | 2011-08-01 | 2013-02-07 | R.J. Reynolds Tobacco Company | Degradable cigarette filter |
US10064429B2 (en) | 2011-09-23 | 2018-09-04 | R.J. Reynolds Tobacco Company | Mixed fiber product for use in the manufacture of cigarette filter elements and related methods, systems, and apparatuses |
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WO2013101458A1 (en) | 2011-12-28 | 2013-07-04 | R.J. Reynolds Tobacco Company | Method of tipping for smoking article |
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US9833017B2 (en) | 2012-07-25 | 2017-12-05 | R.J. Reynolds Tobacco Company | Mixed fiber sliver for use in the manufacture of cigarette filter elements |
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WO2014018645A1 (en) | 2012-07-25 | 2014-01-30 | R. J. Reynolds Tobacco Company | Mixed fiber sliver for use in the manufacture of cigarette filter elements |
US10104906B1 (en) | 2012-09-17 | 2018-10-23 | Tannpapier Gmbh | Mouthpiece lining paper |
EP4241584A2 (en) | 2012-10-10 | 2023-09-13 | R. J. Reynolds Tobacco Company | Filter material for a filter element of a smoking article and associated method |
US9119419B2 (en) | 2012-10-10 | 2015-09-01 | R.J. Reynolds Tobacco Company | Filter material for a filter element of a smoking article, and associated system and method |
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EP3593659A2 (en) | 2013-03-14 | 2020-01-15 | RAI Strategic Holdings, Inc. | Electronic smoking article with improved storage and transport of aerosol precursor compositions |
WO2014159982A1 (en) | 2013-03-14 | 2014-10-02 | R. J. Reynolds Tobacco Company | Electronic smoking article with improved storage means |
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WO2015108816A2 (en) | 2014-01-17 | 2015-07-23 | R. J. Reynolds Tobacco Company | Electronic smoking article with improved storage of aerosol precursor compositions |
US9844232B2 (en) | 2014-03-11 | 2017-12-19 | R.J. Reynolds Tobacco Company | Smoking article inspection system and associated method |
WO2015138440A1 (en) | 2014-03-11 | 2015-09-17 | R. J. Reynolds Tobacco Company | Smoking article inspection system and associated method |
WO2015138456A1 (en) | 2014-03-12 | 2015-09-17 | R. J. Reynolds Tobacco Company | Smoking article package inspection system and associated method |
US10063814B2 (en) | 2014-03-12 | 2018-08-28 | R.J. Reynolds Tobacco Company | Smoking article package inspection system and associated method |
WO2017044558A1 (en) | 2015-09-09 | 2017-03-16 | R. J. Reynolds Tobacco Company | Flavor delivery article |
WO2017103795A1 (en) | 2015-12-16 | 2017-06-22 | R. J. Reynolds Tobacco Company | Flavor additive accessory |
US10524500B2 (en) | 2016-06-10 | 2020-01-07 | R.J. Reynolds Tobacco Company | Staple fiber blend for use in the manufacture of cigarette filter elements |
WO2018224986A2 (en) | 2017-06-07 | 2018-12-13 | Rai Strategic Holdings, Inc. | Fibrous filtration material for electronic smoking article |
EP4311440A2 (en) | 2017-06-07 | 2024-01-31 | RAI Strategic Holdings, Inc. | Fibrous filtration material for electronic smoking article |
US10681937B2 (en) | 2017-06-07 | 2020-06-16 | Rai Strategic Holdings, Inc. | Fibrous filtration material for electronic smoking article |
US10383369B2 (en) | 2017-06-07 | 2019-08-20 | Rai Strategic Holdings, Inc. | Fibrous filtration material for electronic smoking article |
US11388927B2 (en) | 2018-04-05 | 2022-07-19 | R.J. Reynolds Tobacco Company | Cigarette filter object insertion apparatus and associated method |
Also Published As
Publication number | Publication date |
---|---|
NL6606594A (en) | 1966-11-15 |
BE680932A (en) | 1966-10-17 |
DE1300854B (en) | 1969-08-07 |
NL154102B (en) | 1977-08-15 |
LU51086A1 (en) | 1966-07-12 |
DK119757B (en) | 1971-02-15 |
CH480810A (en) | 1969-11-15 |
FI42685B (en) | 1970-06-01 |
GB1079827A (en) | 1967-08-16 |
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