GB1371794A - Tobacco-smoke filters - Google Patents

Tobacco-smoke filters

Info

Publication number
GB1371794A
GB1371794A GB4150371A GB4150371A GB1371794A GB 1371794 A GB1371794 A GB 1371794A GB 4150371 A GB4150371 A GB 4150371A GB 4150371 A GB4150371 A GB 4150371A GB 1371794 A GB1371794 A GB 1371794A
Authority
GB
United Kingdom
Prior art keywords
tobacco
smoke
filter
exceeding
disc
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
GB4150371A
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
Priority to GB4150371A priority Critical patent/GB1371794A/en
Priority to CA150,264A priority patent/CA971066A/en
Priority to ZA725729A priority patent/ZA725729B/en
Priority to AU45941/72A priority patent/AU4594172A/en
Priority to BR6003/72A priority patent/BR7206003D0/en
Priority to DE2243349A priority patent/DE2243349A1/en
Priority to NL7212021A priority patent/NL7212021A/xx
Priority to BE788366D priority patent/BE788366A/en
Priority to CH1310772A priority patent/CH561516A5/xx
Publication of GB1371794A publication Critical patent/GB1371794A/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)

Abstract

1371794 Cigarettes; tobacco-smoke filters BRITISH-AMERICAN TOBACCO CO Ltd 16 Aug 1972 [6 Sept 1971] 41503/71 Heading A2C A tobacco-smoke filter or filter section comprises a wrapping 5 bounding a smoke passage and a disc 8 not exceeding 2mm in thickness and made of a packed layer of particles not exceeding 500 micron in diameter, the disc 8 being imperforate and so disposed across said passage that the smoke drawn therethrough is constrained to pass through the filtering material of the said layer. The particles may take the form of microspheres or small beads of glass, metal or plastics, and may simply be compressed or compacted or may be bonded to one another and, if required, to a supporting disk or disks. As shown, the filter may also comprise a conventional cellulose acetate filter 3, be provided with ventillation holes 4, and be attached to a cigarette 2.
GB4150371A 1971-09-06 1971-09-06 Tobacco-smoke filters Expired GB1371794A (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
GB4150371A GB1371794A (en) 1971-09-06 1971-09-06 Tobacco-smoke filters
CA150,264A CA971066A (en) 1971-09-06 1972-08-21 Tobacco-smoke filters
ZA725729A ZA725729B (en) 1971-09-06 1972-08-21 Improvements relating to tobacco-smoke filters
AU45941/72A AU4594172A (en) 1971-09-06 1972-08-24 Tobacco-smoke filters
BR6003/72A BR7206003D0 (en) 1971-09-06 1972-08-31 A FILTER OR FILTER SECTION FOR TOBACCO SMOKE
DE2243349A DE2243349A1 (en) 1971-09-06 1972-09-02 TOBACCO SMOKE FILTER IMPROVEMENTS
NL7212021A NL7212021A (en) 1971-09-06 1972-09-04
BE788366D BE788366A (en) 1971-09-06 1972-09-04 IMPROVEMENTS RELATED TO FILTERS FOR TOBACCO SMOKE
CH1310772A CH561516A5 (en) 1971-09-06 1972-09-05

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4150371A GB1371794A (en) 1971-09-06 1971-09-06 Tobacco-smoke filters

Publications (1)

Publication Number Publication Date
GB1371794A true GB1371794A (en) 1974-10-30

Family

ID=10419994

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4150371A Expired GB1371794A (en) 1971-09-06 1971-09-06 Tobacco-smoke filters

Country Status (9)

Country Link
AU (1) AU4594172A (en)
BE (1) BE788366A (en)
BR (1) BR7206003D0 (en)
CA (1) CA971066A (en)
CH (1) CH561516A5 (en)
DE (1) DE2243349A1 (en)
GB (1) GB1371794A (en)
NL (1) NL7212021A (en)
ZA (1) ZA725729B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4331166A (en) * 1980-05-02 1982-05-25 Philip Morris, Incorporated Cigarette
CN102008124A (en) * 2010-12-07 2011-04-13 杨茂亮 Economical cigarette
WO2022074133A1 (en) * 2020-10-09 2022-04-14 Philip Morris Products S.A. Aerosol-generating article with ventilation

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH668533A5 (en) * 1985-08-26 1989-01-13 Baumgartner Papiers Sa CIGARETTE FILTER UNIT.
DE3624661A1 (en) * 1986-07-22 1988-02-04 Rhodia Ag VENTILATED CIGARETTE
GB8823902D0 (en) * 1988-10-12 1988-11-16 Rothmans Int Tobacco Cigarette filter rod elements & cigarettes incorporating such filter rod elements
DK499289A (en) * 1988-10-12 1990-04-13 Rothmans Int Tobacco CANDLE ELEMENTS FOR CIGARET FILTERS AND CIGARETTE EQUIPPED WITH SUCH CUSTOM ELEMENTS

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4331166A (en) * 1980-05-02 1982-05-25 Philip Morris, Incorporated Cigarette
CN102008124A (en) * 2010-12-07 2011-04-13 杨茂亮 Economical cigarette
CN102008124B (en) * 2010-12-07 2013-11-06 杨茂亮 Economical cigarette
WO2022074133A1 (en) * 2020-10-09 2022-04-14 Philip Morris Products S.A. Aerosol-generating article with ventilation

Also Published As

Publication number Publication date
CH561516A5 (en) 1975-05-15
CA971066A (en) 1975-07-15
NL7212021A (en) 1973-03-08
ZA725729B (en) 1973-05-30
BR7206003D0 (en) 1973-09-13
BE788366A (en) 1973-01-02
DE2243349A1 (en) 1973-03-22
AU4594172A (en) 1974-02-28

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee