Patent US4055191A successfully refreshed from Google Patents.
US4055191A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tobacco composition
Assignee: Liggett Group LLC
•
Filing: 1975-10-03
•
Granted: 1977-10-25
•
Expires: 1995-10-03
Abstract
Abstract The amount of polycyclic aromatic hydrocarbons in tobacco smoke is reduced and a substantially diminished biological activity of the tobacco smoke condensate when evaluated on experimental animals following conventional protocol is achieved by adding to the tobacco palladium, either in metallic or salt form, and an inorganic nitric oxide generating compound.
Inventors
- 👤 Vello Norman
- 👤 Herman G. Bryant, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:13
CPC Classifications
A; A24; A24B; A24B15/00; A24B15/18; A24B15/24; A24B15/241; A24B15/246; A24B15/28; A24B15/287
Claims Analysis
Total Claims: 32
Claim 1
Independent Claim
48 words
A smoking tobacco composition comprising tobacco, palladium in an amount of from about 0.001 to about 1 weight percent based on the weight of the tobacco, and an inorganic nitrate salt in an amount of from about 0.25 to about 0.75 weight percent calculated as added nitrate nitrogen
Claim 2
Dependent Claim
48 words
A smoking tobacco composition comprising tobacco, palladium in an amount of from about 0.001 to about 1 weight percent based on the weight of the tobacco, and an inorganic nitrate salt in an amount of from about 0.25 to about 0.75 weight percent calculated as added nitrate nitrogen
Claim 3
Dependent Claim
48 words
The composition of claim 1 wherein the concentration of palladium is from about 0.01 to about 0.1 weight percent and the concentration of nitrate salt is from about 0.25 to about 0.6 weight percent calculated as added nitrate or nitrite nitrogen, based on the weight of said tobacco.
Claim 4
Dependent Claim
39 words
The composition of claim 2 wherein the nitric oxide releasing compound is a nitrate salt of a metal selected from Groups Ia, Ib, IIa, IIb, IIIa, IIIb, IVa, IVb, Va, Vb, and the transition metals of the Periodic Table.
Claim 5
Dependent Claim
24 words
The composition of claim 3 wherein the nitric oxide releasing compound is selected from the group of alkali and alkaline earth metal nitrate salts.
Claim 6
Dependent Claim
23 words
The composition of claim 4 wherein the nitrate is a salt of a metal selected from the group of calcium, magnesium and zinc.
Claim 7
Dependent Claim
12 words
The composition of claim 5 wherein the nitrate is magnesium nitrate hexahydrate.
Claim 8
Dependent Claim
17 words
The composition of claim 2 wherein the palladium is in the form of finely divided metallic palladium.
Claim 9
Dependent Claim
13 words
The composition of claim 7 wherein the palladium is present as palladium black.
Claim 10
Dependent Claim
21 words
The composition of claim 2 wherein the palladium is in the form of a palladium salt thermally decomposable to metallic palladium.
Claim 11
Dependent Claim
13 words
The composition of claim 9 wherein the palladium salt is a water-soluble salt.
Claim 12
Dependent Claim
31 words
The composition of claim 10 wherein the water-soluble palladium salt is selected from the group of a nitrate salt, a halide salt, a diamine complex of palladium or a palladate salt.
Claim 13
Dependent Claim
11 words
The composition of claim 11 wherein the salt is ammonium hexachloropalladate.
Claim 14
Dependent Claim
15 words
The composition of claim 12 wherein the nitric oxide releasing compound is magnesium nitrate hexahydrate.
Claim 15
Dependent Claim
11 words
The composition of claim 10 wherein the salt is ammonium tetrachloropalladate.
Claim 16
Dependent Claim
9 words
A cigarette containing the tobacco composition of claim 1.
Claim 17
Dependent Claim
9 words
A cigar containing the tobacco composition of claim 1.
Claim 18
Dependent Claim
10 words
A pipe tobacco containing the tobacco composition of claim 1.
Claim 19
Dependent Claim
34 words
The process for making the composition of claim 1 comprising admixing a catalytic quantity of palladium, said nitrate and tobacco to provide a uniform dispersion of said palladium and said nitrate throughout said tobacco.
Claim 20
Dependent Claim
65 words
A smoking tobacco composition comprising: a. tobacco, and b. a catalytic mixture consisting, essentially of palladium, in an amount of from about 0.01 to about 0.1 weight percent based on the weight of the tobacco and a non-toxic inorganic nitrate salt in an amount of from about 0.25 to about 0.75 weight percent calculated as added nitrate nitrogen based on the weight of the tobacco.
Claim 21
Dependent Claim
65 words
A smoking tobacco composition comprising: a. tobacco, and b. a catalytic mixture consisting, essentially of palladium, in an amount of from about 0.01 to about 0.1 weight percent based on the weight of the tobacco and a non-toxic inorganic nitrate salt in an amount of from about 0.25 to about 0.75 weight percent calculated as added nitrate nitrogen based on the weight of the tobacco.
Claim 22
Dependent Claim
16 words
The composition of claim 19 wherein the nitrate is an alkali or alkaline earth metal nitrate.
Claim 23
Dependent Claim
11 words
The composition of claim 20 wherein the nitrate is magnesium nitrate.
Claim 24
Dependent Claim
22 words
The composition of claim 21 wherein the palladium is added to the tobacco in the form of (NH4) 2 PdCl 6 .
Claim 25
Dependent Claim
11 words
The composition of claim 21 wherein the salt is ammonium tetrachloropalladate.
Claim 26
Dependent Claim
69 words
A smoking tobacco composition comprising a. a blend of tobaccos containing up to about 21 percent by weight reconstituted tobacco; b. magnesium nitrate, in an amount of from about 0.25 to about 0.75 weight percent calculated as added nitrate nitrogen based on the weight of the tobacco; and c. palladium, in an amount of from about 0.01 to about 0.1 weight percent based on the weight of the tobacco.
Claim 27
Dependent Claim
69 words
A smoking tobacco composition comprising a. a blend of tobaccos containing up to about 21 percent by weight reconstituted tobacco; b. magnesium nitrate, in an amount of from about 0.25 to about 0.75 weight percent calculated as added nitrate nitrogen based on the weight of the tobacco; and c. palladium, in an amount of from about 0.01 to about 0.1 weight percent based on the weight of the tobacco.
Claim 28
Dependent Claim
15 words
The composition of claim 24 wherein the palladium is in the form of palladium hexachloropalladate.
Claim 29
Dependent Claim
80 words
A smoking tobacco composition which comprises the product of the process of mixing tobacco and an aqueous solution of a palladium salt in an amount of from about 0.01 to about 0.1 weight percent calculated as palladium and an inorganic nitrate salt in an amount of from about 0.25 to about 0.75 weight percent calculated as added nitrate nitrogen, said weight percents of palladium and nitrate salt being based on the total weight of the tobacco in the smoking composition.
Claim 30
Dependent Claim
80 words
A smoking tobacco composition which comprises the product of the process of mixing tobacco and an aqueous solution of a palladium salt in an amount of from about 0.01 to about 0.1 weight percent calculated as palladium and an inorganic nitrate salt in an amount of from about 0.25 to about 0.75 weight percent calculated as added nitrate nitrogen, said weight percents of palladium and nitrate salt being based on the total weight of the tobacco in the smoking composition.
Claim 31
Dependent Claim
27 words
The composition of claim 26 wherein the nitrate salt is magnesium nitrate and the palladium salt is selected from the group of ammonium hexachloropalladate and ammonium tetrachloropalladate.
Claim 32
Dependent Claim
13 words
The composition of claim 27 wherein the aqueous solution is the casing solution.
References Cited (Backward Citations)
FR1180320A
Cited
US3572348A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-10-24 | 1981-04-25 | 1981-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-10-24 | 1985-04-25 | 1985-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-10-24 | 1989-04-25 | 1989-10-25 | $7700.00 | Window Closed / Lapsed |