Patent US3977417A successfully refreshed from Google Patents.
US3977417A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Smoking article and process for filtering tobacco smoke employing a cross-linked organic oil filter material
Assignee: Philip Morris USA Inc
•
Filing: 1973-03-23
•
Granted: 1976-08-31
•
Expires: 1993-03-23
Abstract
Abstract The invention relates to a smoking article and to a process of filtering tobacco smoke comprising passing tobacco smoke through a particulate, solidified cross-linked organic oil. An inorganic or organic powder may be used in conjunction with the particulate solidified oil in order to improve bulk handling characteristics and to improve the filtering qualities of the material.
Inventors
- 👤 Charles B. Hoelzel
- 👤 Norman B. Rainer
- 👤 Peter Allen Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 02:53
CPC Classifications
A; A24; A24D; A24D3/00; A24D3/06; A24D3/08
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
85 words
A smoking article comprising a smokeable tobacco product and in a filtering relationship therewith, a solidfied organic oil in the form of resilient, non-thermoplastic particles having a particle size of from about 20 to about 200 mesh U.S. Sieve Series where said solidified organic oil has a Shore A hardness of from about 10 to about 100, an elongation of less than about 200% and which have the capacity to absorb sufficient amounts of organic liquids to expand from 3 to 20 times in volume.
Claim 2
Dependent Claim
85 words
A smoking article comprising a smokeable tobacco product and in a filtering relationship therewith, a solidfied organic oil in the form of resilient, non-thermoplastic particles having a particle size of from about 20 to about 200 mesh U.S. Sieve Series where said solidified organic oil has a Shore A hardness of from about 10 to about 100, an elongation of less than about 200% and which have the capacity to absorb sufficient amounts of organic liquids to expand from 3 to 20 times in volume.
Claim 3
Dependent Claim
97 words
The article of claim 1 comprising a smokeable tobacco product and in a filtering relationship therewith, a particulate solidified organic oil having a particle size of from about 20 to about 200 mesh U.S. Sieve Series, said oil being selected from at least one member of the class of oils consisting of soy bean, castor, rape-seed, olive, peanut, corn, cottonseed, tung, safflower and linseed oils, said oil being solidified by chemical cross-linking where said solidified organic oil has a Shore A hardness of from about 10 to about 100 and an elongation of less than about 200%.
Claim 4
Dependent Claim
78 words
The article of claim 1 where said oil has at least about 12 carbon atoms in the molecule and a viscosity of less than about 400 poises at room temperature and is selected from at least one member of the group consisting of olefins, fatty acid dimers and oxidized oil containing hydroxyl groups, where said solidified organic oil has a Shore A hardness of from about 10 to about 100 and an elongation of less than about 200%.
Claim 5
Dependent Claim
127 words
A smoking article comprising a smokeable tobacco product and in a filtering relationship therewith, a particulate solidified cross-linked organic oil having a particle size of from about 20 to about 200 mesh U.S. Sieve Series and up to about 20 weight percent based on said oil of powder selected from at least one member of the group consisting of inorganic powders and organic powders, said powder being hydrophilic and having a particle size of from about 1 to about 100 microns where said solidified organic oil has a Shore A hardness of from about 10 to about 100 and an elongation of less than about 200% and which have the capacity to absorb sufficient amounts of organic liquids to expand from 3 to 20 times in volume.
Claim 6
Dependent Claim
127 words
A smoking article comprising a smokeable tobacco product and in a filtering relationship therewith, a particulate solidified cross-linked organic oil having a particle size of from about 20 to about 200 mesh U.S. Sieve Series and up to about 20 weight percent based on said oil of powder selected from at least one member of the group consisting of inorganic powders and organic powders, said powder being hydrophilic and having a particle size of from about 1 to about 100 microns where said solidified organic oil has a Shore A hardness of from about 10 to about 100 and an elongation of less than about 200% and which have the capacity to absorb sufficient amounts of organic liquids to expand from 3 to 20 times in volume.
Claim 7
Dependent Claim
66 words
The article of claim 4 where said particulate oil is selected from a member of the class of oils consisting of soy bean, castor, rape-seed, olive, peanut, corn, cottonseed, tung, safflower and linseed oils, said oil being solidified by chemical cross-linking where said solidified organic oil has a Shore A hardness of from about 10 to about 100 and an elongation of less than about 200%.
Claim 8
Dependent Claim
79 words
The article of claim 4 where said oil has at least about 12 carbon atoms in the molecule and a viscosity of less than about 400 poises at room temperature and is selected from at least one member of the group consisting of alpha-unsaturated olefins, fatty acid dimers and oxidized oil containing hydroxyl groups, where said solidified organic oil has a Shore A hardness of from about 10 to about 100 and an elongation of less than about 200%.
Claim 9
Dependent Claim
98 words
A process of filtering tobacco smoke comprising passing said smoke through a particulate solidified organic oil having a particle size of from about 20 to about 200 mesh U.S. Sieve Series where said solidified organic oil has a Shore A hardness of from about 10 to about 100 and an elongation of less than about 200% and wherein said oil is vegetable oil selected from at least one member of the class of oils consisting of soy bean, castor, rape seed, olive, peanut, corn, cottonseed, tung, safflower and linseed oils and said oil is solidified by chemical cross-linking.
Claim 10
Dependent Claim
98 words
A process of filtering tobacco smoke comprising passing said smoke through a particulate solidified organic oil having a particle size of from about 20 to about 200 mesh U.S. Sieve Series where said solidified organic oil has a Shore A hardness of from about 10 to about 100 and an elongation of less than about 200% and wherein said oil is vegetable oil selected from at least one member of the class of oils consisting of soy bean, castor, rape seed, olive, peanut, corn, cottonseed, tung, safflower and linseed oils and said oil is solidified by chemical cross-linking.
Claim 11
Dependent Claim
79 words
The process of claim 7 where said oil has at least about 12 carbon atoms in the molecule and a viscosity of less than about 400 poises at room temperature and is selected from at least one member of the group consisting of alpha-unsaturated olefins, fatty acid dimers and oxidized oil containing hydroxyl groups, where said solidified organic oil has a Shore A hardness of from about 10 to about 100 and an elongation of less than about 200%.
Claim 12
Dependent Claim
123 words
A filter material for tobacco smoke comprising a particulate solidified organic oil having a particle size of from about 20 to about 200 mesh U.S. Sieve Series and up to about 20 weight percent based on said vegetable oil of a powder selected from at least one member of the group consisting of an inorganic powder and an organic powder, said powder being hydrophilic and having a particle size of from about 1 to about 100 microns where said solidified organic oil has a Shore A hardness of from about 10 to about 100 and an elongation of less than about 200% and which have the capacity to absorb sufficient amounts of organic liquids to expand from 3 to 20 times in volume.
Claim 13
Dependent Claim
123 words
A filter material for tobacco smoke comprising a particulate solidified organic oil having a particle size of from about 20 to about 200 mesh U.S. Sieve Series and up to about 20 weight percent based on said vegetable oil of a powder selected from at least one member of the group consisting of an inorganic powder and an organic powder, said powder being hydrophilic and having a particle size of from about 1 to about 100 microns where said solidified organic oil has a Shore A hardness of from about 10 to about 100 and an elongation of less than about 200% and which have the capacity to absorb sufficient amounts of organic liquids to expand from 3 to 20 times in volume.
Claim 14
Dependent Claim
68 words
The filter material of claim 9 where said oil is selected from at least one member of the class of oils consisting of soy bean, castor, rape-seed, olive, peanut, corn, cottonseed, tung, safflower and linseed oils, said oil being solidified by chemical cross-linking where said solidified organic oil has a Shore A hardness of from about 10 to about 100 and an elongation of less than about 200%.
Claim 15
Dependent Claim
80 words
The filter material of claim 9 where said oil has at least about 12 carbon atoms in the molecule and a viscosity of less than about 400 poises at room temperature and is selected from at least one member of the group consisting of alpha-unsaturated olefins, fatty acid dimers and oxidized oil containing hydroxyl groups, where said solidified organic oil has a Shore A hardness of from about 10 to about 100 and an elongation of less than about 200%.
References Cited (Backward Citations)
US2904050A
Cited
US2800908A
Cited
US3428056A
Cited
US3400722A
Cited
US3608564A
Cited
US3774623A
Cited
US3662765A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-08-31 | 1980-03-01 | 1980-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-31 | 1984-03-01 | 1984-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-31 | 1988-03-01 | 1988-08-31 | $7700.00 | Window Closed / Lapsed |