CA947604A - Piston type cigarette filter - Google Patents

Piston type cigarette filter

Info

Publication number: CA947604A
Authority: CA; Canada
Prior art keywords: piston type; cigarette filter; type cigarette; filter; piston
Prior art date: 1970-11-30
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

CA126,531A

Other versions

CA126531S (en

Inventor

Thomas W. Summers

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.)

1970-11-30

Filing date

1971-11-01

Publication date

1974-05-21

1971-11-01 Application filed by British American Tobacco Co Ltd filed Critical British American Tobacco Co Ltd

1974-05-21 Application granted granted Critical

1974-05-21 Publication of CA947604A publication Critical patent/CA947604A/en

Status 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
- A24D3/041—Tobacco smoke filters characterised by their shape or structure with adjustable means for modifying the degree of filtration of the filter

CA126,531A 1970-11-30 1971-11-01 Piston type cigarette filter Expired CA947604A (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US9356070A	1970-11-30	1970-11-30

Publications (1)

Publication Number	Publication Date
CA947604A true CA947604A (en)	1974-05-21

Family

ID=22239610

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CA126,531A Expired CA947604A (en)	1970-11-30	1971-11-01	Piston type cigarette filter

Country Status (9)

Country	Link
US (1)	US3695274A (en)
AU (1)	AU450226B2 (en)
BE (1)	BE776025A (en)
BR (1)	BR7107540D0 (en)
CA (1)	CA947604A (en)
CH (1)	CH545601A (en)
GB (1)	GB1330936A (en)
NL (1)	NL154926B (en)
ZA (1)	ZA717384B (en)

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4433696A (en)	1981-10-02	1984-02-28	Philip Morris Incorporated	Variable dilution filter
USRE32221E (en) *	1981-10-02	1986-08-12		Variable dilution filter
WO1984000478A1 (en) *	1982-07-23	1984-02-16	Philip Morris Inc	Cigarettes and methods of manufacture
EP0102247B1 (en) *	1982-09-01	1987-10-28	Imperial Tobacco Limited	Tipping assembly for an elongate smoking article
US4649944A (en) *	1982-09-30	1987-03-17	Philip Morris Incorporated	Filter cigarette
US4526183A (en) *	1982-09-30	1985-07-02	Philip Morris Incorporated	Filter cigarette
US4527573A (en) *	1982-11-05	1985-07-09	Philip Morris Incorporated	Filter cigarette
US4570649A (en) *	1982-09-30	1986-02-18	Philip Morris Incorporated	Filter cigarette
US4532943A (en) *	1982-09-30	1985-08-06	Philip Morris Incorporated	Adjustable filter cigarette
US4559955A (en) *	1983-06-20	1985-12-24	Link Electronics Ltd	Controlled air bleed cigarette holder
GB2158689B (en) *	1984-05-19	1987-11-18	British American Tobacco Co	Improvements relating to smoking articles
US4620553A (en) *	1984-05-22	1986-11-04	Imperial Group Public Limited Company	Tobacco smoke filters
NL191233C (en) *	1985-05-20	1995-04-03	Tobacco Res & Dev	Cigarette with blockable air inlet.
US4649945A (en) *	1985-12-05	1987-03-17	R. J. Reynolds Tobacco Company	Adjustable air dilution cigarette exhibiting controlled pressure drop
US4649941A (en) *	1985-12-16	1987-03-17	R. J. Reynolds Tobacco Company	Adjustable air dilution cigarette exhibiting controlled pressure drop
US4638820A (en) *	1986-02-03	1987-01-27	R. J. Reynolds Tobacco Company	Puff control cigarette
BE1000454A4 (en) *	1987-04-09	1988-12-13	Tabacofina Nv	Mouthpiece for cigarette - comprises slightly porous core with passages between ends which can be shut off
US4949736A (en) *	1988-03-16	1990-08-21	R. J. Reynolds Tobacco Company	Variable ventilation mouthpiece for a smoking article
US4898190A (en) *	1989-03-01	1990-02-06	R. J. Reynolds Tabacco Company	Adjustable air dilution cigarette with pressure drop compensation
GB9023368D0 (en) *	1990-10-26	1990-12-05	Rothmans International Ltd	Smoking article
CN1109304A (en) *	1994-11-09	1995-10-04	宁宝纲	Cigarette composite filter tip
RU2125822C1 (en) *	1998-06-15	1999-02-10	Погосян Сейран Амаякович	Smoking article
RU2138974C1 (en)	1999-03-12	1999-10-10	Погосян Сейран Амаякович	Smoking article
US6318376B1 (en) *	1999-12-07	2001-11-20	Chih-Wen Cheng	Filter tip structure for cigarette
GB201310599D0 (en)	2013-06-13	2013-07-31	Filtrona Filter Prod Dev Co	Tabacco smoke filter

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2145733A (en) *	1938-02-01	1939-01-31	Palumbo Peter	Filter and ejector for cigarette and cigar holders
US2764513A (en) *	1954-04-02	1956-09-25	Abe R Brothers	Cigarette with means for removing deleterious products of combustion
US3335733A (en) *	1965-03-15	1967-08-15	John M Brooks	Smoke filter
US3512537A (en) *	1968-11-27	1970-05-19	U S Remedy Corp	Adjustable aerated cigarette

1970
- 1970-11-30 US US93560A patent/US3695274A/en not_active Expired - Lifetime
1971
- 1971-09-28 GB GB4512271A patent/GB1330936A/en not_active Expired
- 1971-11-01 CA CA126,531A patent/CA947604A/en not_active Expired
- 1971-11-03 ZA ZA717384A patent/ZA717384B/en unknown
- 1971-11-11 BR BR7540/71A patent/BR7107540D0/en unknown
- 1971-11-19 CH CH1689671A patent/CH545601A/xx not_active IP Right Cessation
- 1971-11-19 AU AU35939/71A patent/AU450226B2/en not_active Expired
- 1971-11-19 NL NL717115951A patent/NL154926B/en not_active IP Right Cessation
- 1971-11-30 BE BE776025A patent/BE776025A/en not_active IP Right Cessation

Also Published As

Publication number	Publication date
BE776025A (en)	1972-05-30
AU3593971A (en)	1973-05-24
BR7107540D0 (en)	1973-02-22
AU450226B2 (en)	1974-07-04
GB1330936A (en)	1973-09-19
DE2156043A1 (en)	1972-05-31
NL154926B (en)	1977-11-15
DE2156043B2 (en)	1976-05-20
ZA717384B (en)	1972-07-26
NL7115951A (en)	1972-06-01
CH545601A (en)	1974-02-15
US3695274A (en)	1972-10-03

Publication	Publication Date	Title
CA947604A (en)	1974-05-21	Piston type cigarette filter
CA943835A (en)	1974-03-19	Filter
CA963401A (en)	1975-02-25	Filter
CA929437A (en)	1973-07-03	Cigarette
EG10134A (en)	1976-12-31	Cigarettes filter
CA945478A (en)	1974-04-16	Filter
CA961728A (en)	1975-01-28	Tobacco-smoke filters
CA942611A (en)	1974-02-26	Tobacco-smoke filters
CA926258A (en)	1973-05-15	Smoke filter
CA920760A (en)	1973-02-13	Solid filters
CA939225A (en)	1974-01-01	Tobacco-smoke filters
AU1918270A (en)	1972-03-02	Omniological filter
AU1676470A (en)	1972-01-06	Smoke filter
AU440841B2 (en)	1973-09-19	Filter
CA946700A (en)	1974-05-07	Filter for cigarettes
CA935346A (en)	1973-10-16	Filters
CA836872A (en)	1970-03-17	Cigarette filters
CA832255A (en)	1970-01-20	Filter cigarettes
CA940405A (en)	1974-01-22	Tobacco-smoke filters
CA858316A (en)	1970-12-15	Aerosol filter
CA818206A (en)	1969-07-22	Cigarette filters
CA831818A (en)	1970-01-13	Filters
CA835685A (en)	1970-03-03	Filters
CA841406A (en)	1970-05-12	Filters
CA855034A (en)	1970-11-03	Filter