US4466451A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for aromatizing tobacco smoke
Assignee: Baumgartner Papiers SA
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Filing: 1982-06-04
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Granted: 1984-08-21
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Expires: 2002-06-04
Abstract
Abstract A highly-porous silica gel charged with 10% by weight of anethole and 20% by weight of deactivating agent is used in the tip of a cigarette in order to aromatize the smoke drawn from the cigarette in a simple way with anethole even after prolonged storage of the cigarette.
Inventors
- 👤 Jacques Bonnet
- 👤 Pierre Jaccard
- 👤 Serge Veluz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:35
CPC Classifications
A; A24; A24D; A24D3/00; A24D3/06
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
73 words
A method for aromatizing tobacco smoke drawn from a cigarette which comprises charging a highly-porous silica gel in the cigarette mouthpiece with 10-20% by weight of aroma substances selected from the group consisting of a synthetic tobacco aroma, a natural or synthetic tobacco extract, a natural or synthetic tobacco smoke extract or a phenolic ether aroma substance, wherein the adsorption capacity of said silica gel is adjusted with the deactivating agent, propylene glycol.
Claim 2
Independent Claim
73 words
A method for aromatizing tobacco smoke drawn from a cigarette which comprises charging a highly-porous silica gel in the cigarette mouthpiece with 10-20% by weight of aroma substances selected from the group consisting of a synthetic tobacco aroma, a natural or synthetic tobacco extract, a natural or synthetic tobacco smoke extract or a phenolic ether aroma substance, wherein the adsorption capacity of said silica gel is adjusted with the deactivating agent, propylene glycol.
Claim 3
Dependent Claim
26 words
The method as claimed in claim 1, wherein the silica gel has a specific surface area within the range of 300 to 700 m 2 /g.
Claim 4
Dependent Claim
23 words
The method as claimed in claim 1, wherein the silica gel has a pore volume within the range of 0.6 to 0.85 ml/g.
Claim 5
Dependent Claim
29 words
The method as claimed in claim 1, wherein the silica gel is charged with aroma substances to 16 to 44% by weight, with respect to the uncharged silica gel.
Claim 6
Dependent Claim
35 words
The method as claimed in claim 1, wherein the silica gel contains 5 to 18% by weight, of water at an equilibrium of 20° C. and 50% relative humidity, with respect to the dry weight.
Claim 7
Dependent Claim
25 words
The method as claimed in claim 1, wherein the silica gel is charged with aroma substances in at least one part of a cigarette filter.
Claim 8
Dependent Claim
31 words
The method as claimed in claim 6, wherein the silica gel charged with aroma substances is incorporated in at least one part of the filter material used in a cigarette filter.
Claim 9
Dependent Claim
17 words
The method as claimed in claim 1, wherein the phenolic ether aroma substance is anethole or anisole.
Claim 10
Dependent Claim
65 words
A cigarette endpiece comprising a chamber containing at least granular silica gel charged with 10-20% by weight of aroma substances selected from the group consisting of a synthetic tobacco aroma, a natural or synthetic tobacco extract, a natural or synthetic tobacco smoke extract or a phenolic ether aroma substance, wherein the adsorption capacity of said silica gel is adjusted with the deactivating agent, propylene glycol.
Claim 11
Dependent Claim
65 words
A cigarette endpiece comprising a chamber containing at least granular silica gel charged with 10-20% by weight of aroma substances selected from the group consisting of a synthetic tobacco aroma, a natural or synthetic tobacco extract, a natural or synthetic tobacco smoke extract or a phenolic ether aroma substance, wherein the adsorption capacity of said silica gel is adjusted with the deactivating agent, propylene glycol.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-08-21 | 1988-02-20 | 1988-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-08-21 | 1992-02-20 | 1992-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-08-21 | 1996-02-20 | 1996-08-21 | $7700.00 | Window Closed / Lapsed |