CA1045496A - Filters for smoking articles - Google Patents

Filters for smoking articles

Info

Publication number
CA1045496A
CA1045496A CA267,065A CA267065A CA1045496A CA 1045496 A CA1045496 A CA 1045496A CA 267065 A CA267065 A CA 267065A CA 1045496 A CA1045496 A CA 1045496A
Authority
CA
Canada
Prior art keywords
filter
band
air
rod
perforations
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
Application number
CA267,065A
Other languages
English (en)
French (fr)
Inventor
Fred Haslam
Henry G. Horsewell
John A. Luke
David E. Conway
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
British American Tobacco Investments Ltd
Original Assignee
British American Tobacco Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by British American Tobacco Co Ltd filed Critical British American Tobacco Co Ltd
Application granted granted Critical
Publication of CA1045496A publication Critical patent/CA1045496A/en
Expired legal-status Critical Current

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
    • A24D3/04—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

Landscapes

  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)
CA267,065A 1975-12-18 1976-11-25 Filters for smoking articles Expired CA1045496A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB51922/75A GB1533568A (en) 1975-12-18 1975-12-18 Filters for smoking articles

Publications (1)

Publication Number Publication Date
CA1045496A true CA1045496A (en) 1979-01-02

Family

ID=10461941

Family Applications (1)

Application Number Title Priority Date Filing Date
CA267,065A Expired CA1045496A (en) 1975-12-18 1976-11-25 Filters for smoking articles

Country Status (12)

Country Link
JP (1) JPS5279099A (de)
AU (1) AU503990B2 (de)
BE (1) BE849482A (de)
BR (1) BR7608510A (de)
CA (1) CA1045496A (de)
CH (1) CH604577A5 (de)
DE (1) DE2654698A1 (de)
DK (1) DK568676A (de)
FI (1) FI63167C (de)
GB (1) GB1533568A (de)
NL (1) NL7613432A (de)
ZA (1) ZA766954B (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4174719A (en) * 1977-06-29 1979-11-20 Olin Corporation Microperforated filter tip cigarette
US4232574A (en) * 1977-08-19 1980-11-11 Liggett Group Inc. Apparatus and method for providing a cigarette filter with an aeration groove
US4294265A (en) * 1980-04-04 1981-10-13 Philip Morris Incorporated Filter cigarette with inlet vent zones
GB9214267D0 (en) * 1992-07-04 1992-08-19 British American Tobacco Co Improvements relating to smoking articles
GB9321536D0 (en) * 1993-10-19 1993-12-08 British American Tobacco Co Smoking articles
BR122013013917A2 (pt) * 2010-10-06 2019-08-06 Acetate International Llc Filtros de fumaça para dispositivos de fumar com massas porosas tendo uma carga de partícula de carbono e uma queda de pressão encapsulada

Also Published As

Publication number Publication date
FI763453A (de) 1977-06-19
AU2001476A (en) 1978-06-01
AU503990B2 (en) 1979-09-27
CH604577A5 (de) 1978-09-15
JPS5279099A (en) 1977-07-02
FI63167C (fi) 1983-05-10
DE2654698A1 (de) 1977-06-30
ZA766954B (en) 1977-10-26
FI63167B (fi) 1983-01-31
BE849482A (fr) 1977-04-15
BR7608510A (pt) 1977-12-20
DK568676A (da) 1977-06-19
GB1533568A (en) 1978-11-29
NL7613432A (nl) 1977-06-21

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