CA939225A - Tobacco-smoke filters - Google Patents

Tobacco-smoke filters

Info

Publication number
CA939225A
CA939225A CA123,305A CA123305A CA939225A CA 939225 A CA939225 A CA 939225A CA 123305 A CA123305 A CA 123305A CA 939225 A CA939225 A CA 939225A
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
CA123,305A
Other versions
CA123305S (en
Inventor
Fred Haslam
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 CA939225A publication Critical patent/CA939225A/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
    • A24D3/02—Manufacture of tobacco smoke filters
    • A24D3/0229—Filter rod forming processes
    • A24D3/0237—Filter rod forming processes by extrusion
CA123,305A 1970-10-07 1971-09-21 Tobacco-smoke filters Expired CA939225A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4770770 1970-10-07

Publications (1)

Publication Number Publication Date
CA939225A true CA939225A (en) 1974-01-01

Family

ID=10445984

Family Applications (1)

Application Number Title Priority Date Filing Date
CA123,305A Expired CA939225A (en) 1970-10-07 1971-09-21 Tobacco-smoke filters

Country Status (7)

Country Link
AU (1) AU460006B2 (en)
BE (1) BE773622A (en)
CA (1) CA939225A (en)
CH (1) CH544514A (en)
GB (1) GB1331096A (en)
NL (1) NL172021B (en)
ZA (1) ZA716273B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4282890A (en) * 1978-03-13 1981-08-11 Celanese Corporation Open cell structure foamed cellulose acetate filters
CN103222684B (en) † 2008-05-21 2015-11-18 R.J.雷诺兹烟草公司 For the formation of the equipment of the filter assemblies of smoking product and correlation technique and the smoking product that manufactured by it
GB201112539D0 (en) 2011-07-21 2011-08-31 British American Tobacco Co Porous carbon and methods of production thereof
US11291242B2 (en) * 2019-08-28 2022-04-05 Aiger Group Ag Apparatus and method for forming a smoke filter

Also Published As

Publication number Publication date
ZA716273B (en) 1972-05-31
DE2149434B2 (en) 1976-05-06
NL172021B (en) 1983-02-01
NL7113503A (en) 1972-04-11
CH544514A (en) 1973-11-30
BE773622A (en) 1972-01-31
DE2149434A1 (en) 1972-05-10
GB1331096A (en) 1973-09-19
AU3388671A (en) 1973-03-29
AU460006B2 (en) 1975-04-10

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