GB1371794A - Tobacco-smoke filters - Google Patents
Tobacco-smoke filtersInfo
- Publication number
- GB1371794A GB1371794A GB4150371A GB4150371A GB1371794A GB 1371794 A GB1371794 A GB 1371794A GB 4150371 A GB4150371 A GB 4150371A GB 4150371 A GB4150371 A GB 4150371A GB 1371794 A GB1371794 A GB 1371794A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tobacco
- smoke
- filter
- exceeding
- disc
- 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
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
Landscapes
- Cigarettes, Filters, And Manufacturing Of Filters (AREA)
Abstract
1371794 Cigarettes; tobacco-smoke filters BRITISH-AMERICAN TOBACCO CO Ltd 16 Aug 1972 [6 Sept 1971] 41503/71 Heading A2C A tobacco-smoke filter or filter section comprises a wrapping 5 bounding a smoke passage and a disc 8 not exceeding 2mm in thickness and made of a packed layer of particles not exceeding 500 micron in diameter, the disc 8 being imperforate and so disposed across said passage that the smoke drawn therethrough is constrained to pass through the filtering material of the said layer. The particles may take the form of microspheres or small beads of glass, metal or plastics, and may simply be compressed or compacted or may be bonded to one another and, if required, to a supporting disk or disks. As shown, the filter may also comprise a conventional cellulose acetate filter 3, be provided with ventillation holes 4, and be attached to a cigarette 2.
Priority Applications (9)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB4150371A GB1371794A (en) | 1971-09-06 | 1971-09-06 | Tobacco-smoke filters |
CA150,264A CA971066A (en) | 1971-09-06 | 1972-08-21 | Tobacco-smoke filters |
ZA725729A ZA725729B (en) | 1971-09-06 | 1972-08-21 | Improvements relating to tobacco-smoke filters |
AU45941/72A AU4594172A (en) | 1971-09-06 | 1972-08-24 | Tobacco-smoke filters |
BR6003/72A BR7206003D0 (en) | 1971-09-06 | 1972-08-31 | A FILTER OR FILTER SECTION FOR TOBACCO SMOKE |
DE2243349A DE2243349A1 (en) | 1971-09-06 | 1972-09-02 | TOBACCO SMOKE FILTER IMPROVEMENTS |
NL7212021A NL7212021A (en) | 1971-09-06 | 1972-09-04 | |
BE788366D BE788366A (en) | 1971-09-06 | 1972-09-04 | IMPROVEMENTS RELATED TO FILTERS FOR TOBACCO SMOKE |
CH1310772A CH561516A5 (en) | 1971-09-06 | 1972-09-05 |
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 |
---|---|
GB1371794A true GB1371794A (en) | 1974-10-30 |
Family
ID=10419994
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB4150371A Expired GB1371794A (en) | 1971-09-06 | 1971-09-06 | 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) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4331166A (en) * | 1980-05-02 | 1982-05-25 | Philip Morris, Incorporated | Cigarette |
CN102008124A (en) * | 2010-12-07 | 2011-04-13 | 杨茂亮 | Economical cigarette |
WO2022074133A1 (en) * | 2020-10-09 | 2022-04-14 | Philip Morris Products S.A. | Aerosol-generating article with ventilation |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
-
1971
- 1971-09-06 GB GB4150371A patent/GB1371794A/en not_active Expired
-
1972
- 1972-08-21 ZA ZA725729A patent/ZA725729B/en unknown
- 1972-08-21 CA CA150,264A patent/CA971066A/en not_active Expired
- 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
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4331166A (en) * | 1980-05-02 | 1982-05-25 | Philip Morris, Incorporated | Cigarette |
CN102008124A (en) * | 2010-12-07 | 2011-04-13 | 杨茂亮 | Economical cigarette |
CN102008124B (en) * | 2010-12-07 | 2013-11-06 | 杨茂亮 | Economical cigarette |
WO2022074133A1 (en) * | 2020-10-09 | 2022-04-14 | Philip Morris Products S.A. | Aerosol-generating article with ventilation |
Also Published As
Publication number | Publication date |
---|---|
CH561516A5 (en) | 1975-05-15 |
CA971066A (en) | 1975-07-15 |
NL7212021A (en) | 1973-03-08 |
ZA725729B (en) | 1973-05-30 |
BR7206003D0 (en) | 1973-09-13 |
BE788366A (en) | 1973-01-02 |
DE2243349A1 (en) | 1973-03-22 |
AU4594172A (en) | 1974-02-28 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |