ZA725729B - Improvements relating to tobacco-smoke filters - Google Patents

Improvements relating to tobacco-smoke filters

Info

Publication number: ZA725729B
Authority: ZA; South Africa
Prior art keywords: tobacco; improvements relating; smoke filters; smoke; filters
Prior art date: 1971-09-06

Application number

ZA725729A

Inventor

K Kilburn

R Richardson

Original Assignee

British American Tobacco Co

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.)

1971-09-06

Filing date

1972-08-21

Publication date

1973-05-30

1972-08-21 Application filed by British American Tobacco Co filed Critical British American Tobacco Co

1973-05-30 Publication of ZA725729B publication Critical patent/ZA725729B/en

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

ZA725729A 1971-09-06 1972-08-21 Improvements relating to tobacco-smoke filters ZA725729B (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
ZA725729B true ZA725729B (en)	1973-05-30

Family

ID=10419994

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
ZA725729A ZA725729B (en)	1971-09-06	1972-08-21	Improvements relating to 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
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
CN102008124B (en) *	2010-12-07	2013-11-06	杨茂亮	Economical cigarette
KR20230084200A (en) *	2020-10-09	2023-06-12	필립모리스 프로덕츠 에스.에이.	Aerosol-generating article with ventilation

1971
- 1971-09-06 GB GB4150371A patent/GB1371794A/en not_active Expired
1972
- 1972-08-21 CA CA150,264A patent/CA971066A/en not_active Expired
- 1972-08-21 ZA ZA725729A patent/ZA725729B/en unknown
- 1972-08-24 AU AU45941/72A patent/AU4594172A/en not_active Expired
- 1972-08-31 BR BR6003/72A patent/BR7206003D0/en unknown
- 1972-09-02 DE DE2243349A patent/DE2243349A1/en active Pending
- 1972-09-04 NL NL7212021A patent/NL7212021A/xx not_active Application Discontinuation
- 1972-09-04 BE BE788366D patent/BE788366A/en unknown
- 1972-09-05 CH CH1310772A patent/CH561516A5/xx not_active IP Right Cessation

Also Published As

Publication number	Publication date
CA971066A (en)	1975-07-15
DE2243349A1 (en)	1973-03-22
AU4594172A (en)	1974-02-28
GB1371794A (en)	1974-10-30
BR7206003D0 (en)	1973-09-13
CH561516A5 (en)	1975-05-15
NL7212021A (en)	1973-03-08
BE788366A (en)	1973-01-02

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