CA942611A - Tobacco-smoke filters - Google Patents

Tobacco-smoke filters

Info

Publication number
CA942611A
CA942611A CA117,309A CA117309A CA942611A CA 942611 A CA942611 A CA 942611A CA 117309 A CA117309 A CA 117309A CA 942611 A CA942611 A CA 942611A
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
CA117,309A
Other versions
CA117309S (en
Inventor
John A. Luke
Henry G. Horsewell
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 CA942611A publication Critical patent/CA942611A/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
    • A24D3/045—Tobacco smoke filters characterised by their shape or structure with smoke acceleration means, e.g. impact-filters
CA117,309A 1970-07-23 1971-07-05 Tobacco-smoke filters Expired CA942611A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3578370 1970-07-23

Publications (1)

Publication Number Publication Date
CA942611A true CA942611A (en) 1974-02-26

Family

ID=10381510

Family Applications (1)

Application Number Title Priority Date Filing Date
CA117,309A Expired CA942611A (en) 1970-07-23 1971-07-05 Tobacco-smoke filters

Country Status (11)

Country Link
AU (1) AU452247B2 (en)
BE (1) BE770421A (en)
CA (1) CA942611A (en)
CH (1) CH540656A (en)
DE (1) DE2135112C3 (en)
FI (1) FI51649C (en)
GB (1) GB1319862A (en)
NL (1) NL7110035A (en)
NO (1) NO128937B (en)
SE (1) SE370612B (en)
ZA (1) ZA714381B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5495859A (en) * 1993-04-14 1996-03-05 1149235 Ontario Inc. Cigarette smoke filter system

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4357950A (en) * 1980-05-27 1982-11-09 American Filtrona Corporation Tobacco smoke filter having improved tar/carbon monoxide ratio
NO157125C (en) * 1982-04-08 1988-06-01 Filtrona Ltd CIGARETTE FILTER ELEMENT, ALTERNATIVE WITH AN ENVIRONMENTAL, VENTILATING NOZZLE MATERIAL.
CN100512689C (en) * 2006-09-28 2009-07-15 江南大学 Additive for lowering tar and free radical content in cigarette smoke and its adding method
CN108142992B (en) * 2017-12-29 2020-06-19 云南恩典科技产业发展有限公司 Phase-change composite material simulating bead blasting function and production method and application thereof
US20210378290A1 (en) * 2020-06-04 2021-12-09 R.J. Reynolds Tobacco Company Paper sheet filter element for a smoking article, and associated method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5495859A (en) * 1993-04-14 1996-03-05 1149235 Ontario Inc. Cigarette smoke filter system
US5497791A (en) * 1993-04-14 1996-03-12 114935 Ontario Inc. Smoker's accessory
US5638833A (en) * 1993-04-14 1997-06-17 1149235 Ontario Inc. Cigarette smoke filter system
US5752527A (en) * 1993-04-14 1998-05-19 Ontario Inc. Smoker's accessory

Also Published As

Publication number Publication date
AU452247B2 (en) 1974-08-29
FI51649B (en) 1976-11-30
DE2135112A1 (en) 1972-01-27
FI51649C (en) 1977-03-10
DE2135112C3 (en) 1973-10-31
DE2135112B2 (en) 1973-04-05
NL7110035A (en) 1972-01-25
NO128937B (en) 1974-02-04
AU3111871A (en) 1973-01-18
SE370612B (en) 1974-10-28
ZA714381B (en) 1972-03-29
BE770421A (en) 1971-12-01
CH540656A (en) 1973-08-31
GB1319862A (en) 1973-06-13

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