US20030140932A1 - Item for smoking - Google Patents

Item for smoking Download PDF

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Publication number
US20030140932A1
US20030140932A1 US10/220,555 US22055503A US2003140932A1 US 20030140932 A1 US20030140932 A1 US 20030140932A1 US 22055503 A US22055503 A US 22055503A US 2003140932 A1 US2003140932 A1 US 2003140932A1
Authority
US
United States
Prior art keywords
filter
ventilated
cigarette according
den
core
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.)
Abandoned
Application number
US10/220,555
Other languages
English (en)
Inventor
Henning Seidel
Solvey Knorr
Inga Gurke
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Reemtsma Cigarettenfabriken GmbH
Original Assignee
Reemtsma Cigarettenfabriken GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=7633015&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=US20030140932(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Reemtsma Cigarettenfabriken GmbH filed Critical Reemtsma Cigarettenfabriken GmbH
Assigned to REEMTSMA CIGARETTENFABRIKEN GMBH reassignment REEMTSMA CIGARETTENFABRIKEN GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: GURKE, INGA, KNORR, SOLVEY, SEIDEL, HENNING
Publication of US20030140932A1 publication Critical patent/US20030140932A1/en
Abandoned legal-status Critical Current

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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
    • A24D3/062—Use of materials for tobacco smoke filters characterised by structural features
    • A24D3/063—Use of materials for tobacco smoke filters characterised by structural features of the fibers
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/04—Tobacco smoke filters characterised by their shape or structure
    • A24D3/043—Tobacco smoke filters characterised by their shape or structure with ventilation means, e.g. air dilution
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/02—Manufacture of tobacco smoke filters
    • A24D3/0275—Manufacture of tobacco smoke filters for filters with special features
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/06—Use of materials for tobacco smoke filters
    • A24D3/08—Use of materials for tobacco smoke filters of organic materials as carrier or major constituent
    • A24D3/10—Use of materials for tobacco smoke filters of organic materials as carrier or major constituent of cellulose or cellulose derivatives

Definitions

  • the invention relates to a ventilated filter cigarette according to the preamble of patent claim 1.
  • Filter structures for insertion into tobacco smoke filters which consist of several material properties are included in the prior art for the solution of various tasks set.
  • ventilation of filters is used in order to ensure a milder smoke and a lower intake of harmful substances.
  • the EP 474 940 B2 as well as the EP 608 047 B1 describe smoke filters in which a middle core segment consists of a different filter material from the envelope. These smoke filters are designated as core or co-axial filters.
  • the filter consists of two longitudinal filter sections, namely the ventilated strand side core filter part and a mouth side mono filter part, where the mouth side mono filter part has as its aim an aesthetic effect.
  • a disadvantage of the named smoke filter is that in each case the outer wrapping of the inner core of the core filter section consists of a material which is permeable to smoke so that the smoke can flow vertically to the barrier surface between core and envelope of the core filter.
  • the EP 0 558 166 B1 describes a ventilated filter cigarette which also possesses a mono filter section at the mouth end and a strand side core filter section.
  • This filter cigarette however possesses an empty chamber between the two filter elements and which is filled with a adsorption medium (e.g. activated carbon).
  • a adsorption medium e.g. activated carbon
  • the EP 539 191 B1 has as its aim the preparation of a ventilated cigarette with particularly light weight.
  • the disadvantage is that the thicknesses of the materials included (both tobacco strand and filter) must be minimized, so as to achieve a particularly lightweight cigarette, when the possibilities for variation of the make-up of the cigarette are extremely limited.
  • the ventilation zone is to be found in the strand side filter part.
  • the problem of the invention is to create a filter cigarette that does not have the above mentioned disadvantages and whose filter elements bring about a reduction of the particle phase of the smoke (e.g. nicotine) and thereby cause simultaneously a disproportionate drop in the gas phase smoke components, when the filtered smoke should contain a composition that has an acceptable taste for the consumer.
  • the filter elements bring about a reduction of the particle phase of the smoke (e.g. nicotine) and thereby cause simultaneously a disproportionate drop in the gas phase smoke components, when the filtered smoke should contain a composition that has an acceptable taste for the consumer.
  • a further problem is to de-couple the draw resistance of the filter from its retention, i.e. achieving an increase of the capacity for holding back the smoke content substances, without having to put up with also sharply raising the draw resistance, which is unavoidable with conventional filter construction methods.
  • a further problem of the invention is to prepare a product with the above named advantages for markets in which chamber filters and in particular those which are filled with activated carbon, are rejected both for reasons of taste and feel.
  • FIG. 1 shows a diagrammatic view of a filter cigarette according to the invention.
  • FIG. 2 shows a diagrammatic view of a further embodiment of the filter cigarette according to the invention.
  • This filter cigarette consists of a strand part 10 and a filter 20 .
  • the strand part 10 is formed from a one-part tobacco strand 11 and an envelope 12 surrounding the tobacco strand 11 .
  • Filter 20 consists of at least two filter parts 22 and 23 and is connected with the strand part 10 with a wrapping paper 13 , that is at least 3 mm longer than filter 20 . Furthermore, the tobacco strand 11 is measured between 55 and 75 mm long, whereas the length of the filter 20 measures 21 to 27 mm.
  • the filter 20 is ventilated in the area of the mouth side filter part.
  • the volume of ventilation can be selected in the range 10 to 90%.
  • the wrapping paper 13 with ventilation holes 14 as the means of ventilation, which are arranged in the form of 1 to 3 rows, preferably 2 rows of holes round about the filter 20 , while in the area of the strand side filter part 23 the wrapping paper 13 however is completely impermeable.
  • ventilation holes 14 are arranged in the form of 1 to 3 rows, preferably 2 rows of holes round about the filter 20 , while in the area of the strand side filter part 23 the wrapping paper 13 however is completely impermeable.
  • ventilating air is sucked through the ventilation holes 14 into filter 20 , which leads to the result that in comparison with a drop in the particle phase a disproportionate drop is attained in the gas phase components of the tobacco smoke.
  • the ventilation medium can protrude a little, up to about 2 mm, beyond the mouth side filter part into the strand side filter part 22 . In this way the ventilating air is also sucked into the mouth side filter part 22 after a diversion.
  • the mouth side filter part 22 consists of at least one filter segment.
  • the mouth side filter part can also consist of two or more filter plugs, as is shown in FIG. 2.
  • a greater possibility of variation of the filter materials is given, as for example the possibility, in addition to the ventilated filter element 22 b on the mouth side of including a further filter element 22 a, which may present on its visible cross-section surface an imprint or a colouring.
  • the strand side filter part 23 forming a coaxial filter part has a core 24 and a sleeve 26 surrounding coaxially the core.
  • the pressure drop of core 24 can be between 10 and 50 mm WS.
  • the sleeve 26 is formed in such a way that its, pressure drop is greater by at least a factor of 2 than that of the core 24 .
  • the sleeve 26 can also be essentially impermeable to smoke.
  • the surface 25 of core 24 is made essentially impermeable to smoke or enveloped in such a way as to be impermeable to smoke.
  • the construction of the strand side filter part 23 has the effect that the smoke flows primarily through the core 24 .
  • the speed of the smoke flow within this core segment is considerably increased, which inherently involves an increased draw resistance with a relatively lower retention.
  • a similar effect is achieved if the cross-sectional restriction of the material through which the smoke flows is caused by the core of the coaxial filter plug being formed almost impermeably, and then all the smoke flows exclusively through the sleeve.
  • the materials available for filtering with filter 20 there are flat, fibrous or granular filter materials, such as cellulose, cellulose ester, preferably cellulose acetate, melt-blown filter material, for example as produced according to WO97/33026, air-laid filter material for example produced according to U.S. Pat. No. 4,375,447, filter materials comprising additives, tobacco e.g. according to DE 199 25 968, reconstituted tobacco, other easily decomposable filer materials or thermoplastic filter fibres.
  • flat, fibrous or granular filter materials such as cellulose, cellulose ester, preferably cellulose acetate, melt-blown filter material, for example as produced according to WO97/33026, air-laid filter material for example produced according to U.S. Pat. No. 4,375,447, filter materials comprising additives, tobacco e.g. according to DE 199 25 968, reconstituted tobacco, other easily decomposable filer materials or thermoplastic filter fibres.
  • a filter element of filter part 22 can be provided with activated carbon particles in order to increase adsorption of the gas phase.
  • Additives can be added by sprinkling or spraying them on to the filter materials, e.g. fibres, or else by direct injection into the material strand.
  • Possible additives for the filter material are: flavouring agents, acids or bases in suspended or dissolved form, or additives with selective retention effect, adsorbents such as activated carbon or SiO 2 .
  • Further additives with selective retention effect are organic acids, bases e.g. hydroxycarboxylic acids and their salts, metals and metal oxides, nitrogen components, ion exchange systems (e.g. zeolites), alcohols, polyphenols and porphyrin derivatives.
  • additives such as plasticizers, e.g. triacetin, triethylene glycol diacetate or citric acid diethyl ester, the additives accelerating photodegradation such as titanium dioxide, the additives favouring biodegradability, vitamins and/or colour pigments are possible for individual formation of the desired filter construction.
  • plasticizers e.g. triacetin, triethylene glycol diacetate or citric acid diethyl ester
  • the additives accelerating photodegradation such as titanium dioxide
  • the additives favouring biodegradability vitamins and/or colour pigments
  • the range for the single fibre fineness for the mouth side filter part 22 in the case of cellulose acetate as filter material, which can consist of two or several similar or dissimilar type segments 22 a and 22 b, can be 1.5 to 5 den and the overall fineness can be 15,000 to 60,000 den.
  • Cigarette A had a 63 mm long tobacco strand 11 and a 21 mm long multi-part filter 20 .
  • the core 24 of the strand side filter part 23 had a diameter of 5.5 mm with a length of 8.0 mm. It consisted of cellulose acetate with a single fibre fineness of 6.0 den and an overall fineness of 17.000 den. The resistance to draw or pressure drop of the core 24 was about 27 mmWC.
  • the sleeve 26 surrounding coaxial the core 24 had an internal diameter of 5.5 mm and an external diameter of 7.8 mm for a length also of 8.0 mm.
  • cellulose acetate with a single fibre fineness of 2.1 den and an overall fineness of 55,000 den.
  • the coaxial filter part thus had a length of 8.0 mm with a diameter of 7.8 mm.
  • the mouth side filter part 22 was formed in one part and consisted of cellulose acetate. It had a diameter of 7.8 mm with a length of 13 mm. In the area of the mouth side filter part there was provided a ventilation zone in the form of a row of laser perforations. The filter ventilation of the cigarette A amounted to 35%.
  • Cigarette B had a 59 mm long tobacco strand and a 25 mm long mullet-part filter 20 .
  • the core 24 of the strand side filter part 23 had a diameter of 5.5 mm at a length of 10.0 mm. It consisted of cellulose acetate with a single fibre fineness of 6.0 den and an overall fineness of 17,000 den. The resistance to draw or pressure drop of the core was at 25 mmWC.
  • the envelope 26 surrounding coaxial the core 24 had an internal diameter of 5.5 mm and an external diameter of 7.8 mm for a length also of 10.00 mm.
  • the coaxial filter part 23 had a length of 10.0 mm with a diameter of 7.8 mm.
  • the mouth side filter part 22 was formed in one part and consisted of cellulose acetate. It had a diameter of 7.8 mm and a length of 15 mm. In the area of the mouth side filter part 22 there was a ventilation zone provided in the form of a row of ventilation holes 14 , which were produced by laser perforations. The filter ventilation of cigarette B amounted to 51%.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)
  • Manufacture Of Tobacco Products (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Compounds Of Unknown Constitution (AREA)
US10/220,555 2000-03-01 2001-02-20 Item for smoking Abandoned US20030140932A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10009829.0 2000-03-01
DE10009829A DE10009829A1 (de) 2000-03-01 2000-03-01 Rauchartikel

Publications (1)

Publication Number Publication Date
US20030140932A1 true US20030140932A1 (en) 2003-07-31

Family

ID=7633015

Family Applications (1)

Application Number Title Priority Date Filing Date
US10/220,555 Abandoned US20030140932A1 (en) 2000-03-01 2001-02-20 Item for smoking

Country Status (21)

Country Link
US (1) US20030140932A1 (cs)
EP (1) EP1259130B1 (cs)
JP (1) JP2003525043A (cs)
KR (1) KR20020075459A (cs)
CN (1) CN1232192C (cs)
AT (1) ATE246882T1 (cs)
AU (1) AU2001235485A1 (cs)
BG (1) BG65496B1 (cs)
CZ (1) CZ299205B6 (cs)
DE (2) DE10009829A1 (cs)
EA (1) EA003912B1 (cs)
ES (1) ES2204833T3 (cs)
HK (1) HK1054300B (cs)
HU (1) HUP0300441A3 (cs)
PL (1) PL365130A1 (cs)
PT (1) PT1259130E (cs)
RS (1) RS50150B (cs)
SK (1) SK286989B6 (cs)
TW (1) TW544288B (cs)
UA (1) UA71062C2 (cs)
WO (1) WO2001064061A1 (cs)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100294288A1 (en) * 2007-07-17 2010-11-25 John Roger Sampson Filter
US20110220134A1 (en) * 2008-09-16 2011-09-15 Martin Duke Filter For A Smoking Article
US20110232660A1 (en) * 2008-09-16 2011-09-29 Martin Duke Filter for a Smoking Article
US20150144149A1 (en) * 2012-05-31 2015-05-28 Philip Morris Products S.A. Smoking article with concentric filter
US9226524B2 (en) * 2010-03-26 2016-01-05 Philip Morris Usa Inc. Biopolymer foams as filters for smoking articles
US11896048B2 (en) 2018-03-08 2024-02-13 Philip Morris Products S.A. Aerosol generating articles

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005005175A1 (de) * 2005-02-01 2006-08-10 Reemtsma Cigarettenfabriken Gmbh Filtercigarette
CN101926509B (zh) * 2009-06-23 2012-05-30 湖北中烟工业有限责任公司 纵向多圆滤嘴棒的生产方法及其设备
CN101708072B (zh) * 2009-12-23 2011-04-13 川渝中烟工业公司 一种含有生物组合物的复合滤嘴
GB201110863D0 (en) * 2011-06-27 2011-08-10 British American Tobacco Co Smoking article filter and insertable filter unit thereof
JP2014230489A (ja) * 2011-09-20 2014-12-11 日本たばこ産業株式会社 シガレット
GB201217894D0 (en) * 2012-10-05 2012-11-21 British American Tobacco Co A smoking article
WO2014091605A1 (ja) * 2012-12-13 2014-06-19 日本たばこ産業株式会社 シガレット
CN103238931A (zh) * 2013-05-22 2013-08-14 广东中烟工业有限责任公司 一种可自行导流的复合卷烟滤棒及复合卷烟
GB201421803D0 (en) * 2014-12-08 2015-01-21 British American Tobacco Co A smoking article, a filter and a method of manufacturing a smoking article
GB201608931D0 (en) 2016-05-20 2016-07-06 British American Tobacco Co Article for use in apparatus for heating smokeable material
JP2017136084A (ja) * 2017-04-05 2017-08-10 日本たばこ産業株式会社 シガレット
CN111712143B (zh) * 2018-03-08 2022-11-25 菲利普莫里斯生产公司 气溶胶生成制品
CN111712142B (zh) * 2018-03-08 2022-07-26 菲利普莫里斯生产公司 气溶胶生成制品以及相关的制造方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4375447A (en) * 1979-12-21 1983-03-01 Kimberly-Clark Corporation Method for forming an air-laid web of dry fibers
US5423336A (en) * 1992-02-25 1995-06-13 H.F. & Ph.F. Reemtsma Gmbh & Co. Ventilated filter cigarette

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU635095B2 (en) * 1990-08-24 1993-03-11 Philip Morris Products Inc. Concentric smoking filter having discrete tow and web filter media
GB9122447D0 (en) * 1991-10-23 1991-12-04 Rothmans Int Tobacco Lightweight cigarette filter and cigarettes incorporating such filters
GB9214267D0 (en) * 1992-07-04 1992-08-19 British American Tobacco Co Improvements relating to smoking articles
US5404890A (en) * 1993-06-11 1995-04-11 R. J. Reynolds Tobacco Company Cigarette filter
WO1997005790A1 (fr) * 1995-08-04 1997-02-20 Mitsubishi Rayon Co., Ltd. Materiau filtrant et filtre de cigarette realise avec ce materiau
DE19604761C2 (de) * 1996-02-09 1998-02-26 Windmoeller & Hoelscher Klebstoffauftragsvorrichtung
DE19718296B4 (de) * 1997-04-30 2006-06-29 British American Tobacco (Germany) Gmbh Ventilierte Filtercigarette mit einem koaxialen Filterelement
DE19722812C2 (de) * 1997-05-30 2003-02-13 Bat Cigarettenfab Gmbh Ultraleicht-Koaxialcigarette mit mehrteiligem Filter
DE19925313C2 (de) * 1999-05-27 2002-04-11 Reemtsma H F & Ph Ventilierte Filtercigarette

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4375447A (en) * 1979-12-21 1983-03-01 Kimberly-Clark Corporation Method for forming an air-laid web of dry fibers
US5423336A (en) * 1992-02-25 1995-06-13 H.F. & Ph.F. Reemtsma Gmbh & Co. Ventilated filter cigarette

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100294288A1 (en) * 2007-07-17 2010-11-25 John Roger Sampson Filter
US8550092B2 (en) 2007-07-17 2013-10-08 British American Tobacco (Investments) Limited Filter
US9078471B2 (en) 2007-07-17 2015-07-14 British American Tobacco (Investments) Limited Filter
US10334875B2 (en) 2007-07-17 2019-07-02 British American Tobacco (Investments) Limited Filter
EP2166887B2 (en) † 2007-07-17 2025-07-09 British American Tobacco (Investments) Limited Filter
US20110220134A1 (en) * 2008-09-16 2011-09-15 Martin Duke Filter For A Smoking Article
US20110232660A1 (en) * 2008-09-16 2011-09-29 Martin Duke Filter for a Smoking Article
US9226524B2 (en) * 2010-03-26 2016-01-05 Philip Morris Usa Inc. Biopolymer foams as filters for smoking articles
US10264815B2 (en) 2010-03-26 2019-04-23 Philip Morris Usa Inc. Biopolymer foams as filters for smoking articles
US20150144149A1 (en) * 2012-05-31 2015-05-28 Philip Morris Products S.A. Smoking article with concentric filter
US11510434B2 (en) * 2012-05-31 2022-11-29 Philip Morris Products S.A. Smoking article with concentric filter
US11896048B2 (en) 2018-03-08 2024-02-13 Philip Morris Products S.A. Aerosol generating articles

Also Published As

Publication number Publication date
JP2003525043A (ja) 2003-08-26
DE10009829A1 (de) 2001-09-20
EP1259130B1 (de) 2003-08-13
EA003912B1 (ru) 2003-10-30
HK1054300A1 (zh) 2003-11-28
PT1259130E (pt) 2003-12-31
RS50150B (sr) 2009-05-06
PL365130A1 (en) 2004-12-27
ES2204833T3 (es) 2004-05-01
HUP0300441A2 (hu) 2003-08-28
HK1054300B (zh) 2006-08-25
UA71062C2 (uk) 2004-11-15
DE50100499D1 (de) 2003-09-18
BG65496B1 (bg) 2008-10-31
EP1259130A1 (de) 2002-11-27
KR20020075459A (ko) 2002-10-04
CZ299205B6 (cs) 2008-05-14
ATE246882T1 (de) 2003-08-15
CN1232192C (zh) 2005-12-21
WO2001064061A1 (de) 2001-09-07
HUP0300441A3 (en) 2005-11-28
YU64802A (sh) 2005-03-15
EA200200934A1 (ru) 2003-02-27
BG107159A (en) 2003-06-30
CZ20023262A3 (cs) 2003-03-12
SK14122002A3 (sk) 2003-02-04
SK286989B6 (sk) 2009-08-06
TW544288B (en) 2003-08-01
AU2001235485A1 (en) 2001-09-12
CN1407861A (zh) 2003-04-02

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Legal Events

Date Code Title Description
AS Assignment

Owner name: REEMTSMA CIGARETTENFABRIKEN GMBH, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:SEIDEL, HENNING;KNORR, SOLVEY;GURKE, INGA;REEL/FRAME:013946/0441

Effective date: 20021211

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION