CA971066A - Tobacco-smoke filters - Google Patents

Tobacco-smoke filters

Info

Publication number
CA971066A
CA971066A CA150,264A CA150264A CA971066A CA 971066 A CA971066 A CA 971066A CA 150264 A CA150264 A CA 150264A CA 971066 A CA971066 A CA 971066A
Authority
CA
Canada
Prior art keywords
tobacco
smoke filters
smoke
filters
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
CA150,264A
Other versions
CA150264S (en
Inventor
Robert B. Richardson
Keith D. Kilburn
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 CA971066A publication Critical patent/CA971066A/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
CA150,264A 1971-09-06 1972-08-21 Tobacco-smoke filters Expired CA971066A (en)

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
CA971066A true CA971066A (en) 1975-07-15

Family

ID=10419994

Family Applications (1)

Application Number Title Priority Date Filing Date
CA150,264A Expired CA971066A (en) 1971-09-06 1972-08-21 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)

Families Citing this family (7)

* 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
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
DK499289A (en) * 1988-10-12 1990-04-13 Rothmans Int Tobacco CANDLE ELEMENTS FOR CIGARET FILTERS AND CIGARETTE EQUIPPED WITH SUCH CUSTOM ELEMENTS
GB8823902D0 (en) * 1988-10-12 1988-11-16 Rothmans Int Tobacco Cigarette filter rod elements & cigarettes incorporating such filter rod elements
CN102008124B (en) * 2010-12-07 2013-11-06 杨茂亮 Economical cigarette
JP2023544745A (en) * 2020-10-09 2023-10-25 フィリップ・モーリス・プロダクツ・ソシエテ・アノニム Aerosol-generating articles with ventilation

Also Published As

Publication number Publication date
ZA725729B (en) 1973-05-30
AU4594172A (en) 1974-02-28
GB1371794A (en) 1974-10-30
BR7206003D0 (en) 1973-09-13
DE2243349A1 (en) 1973-03-22
CH561516A5 (en) 1975-05-15
BE788366A (en) 1973-01-02
NL7212021A (en) 1973-03-08

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