Patent US3625224A successfully refreshed from Google Patents.
US3625224A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tobacco product
Assignee: RJ Reynolds Tobacco Co
•
Filing: 1969-04-30
•
Granted: 1971-12-07
•
Expires: 1989-04-30
Abstract
Abstract Addition of methyl and ethyl substituted pyridine compounds to tobacco to enhance the flavor and aroma.
Inventors
- 👤 John Charles Leffingwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 03:27
CPC Classifications
A; A24; A24B; A24B15/00; A24B15/18; A24B15/28; A24B15/30; A24B15/36; A24B15/38
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
13 words
A product in accordance with claim 1 wherein the pyridine compound is 3-methylpyridine.
Claim 2
Dependent Claim
13 words
A product in accordance with claim 1 wherein the pyridine compound is 3,4-dimethylpyridine.
Claim 3
Dependent Claim
13 words
A product in accordance with claim 1 wherein the pyridine compound is 3,5-dimethylpyridine.
Claim 4
Dependent Claim
13 words
A product in accordance with claim 1 wherein the pyridine compound is 2,4-dimethylpyridine.
Claim 5
Dependent Claim
13 words
A product in accordance with claim 1 wherein the pyridine compound is 2,5-dimethylpyridine.
Claim 6
Dependent Claim
13 words
A product in accordance with claim 1 wherein the pyridine compound is 2,6-dimethylpyridine.
Claim 7
Dependent Claim
13 words
A product in accordance with claim 1 wherein the pyridine compound is 2-ethylpyridine.
Claim 8
Dependent Claim
13 words
A product in accordance with claim 1 wherein the pyridine compound is 4-methylpyridine.
Claim 9
Dependent Claim
13 words
A product in accordance with claim 1 wherein the pyridine compound is 3-ethylpyridine.
Claim 10
Dependent Claim
13 words
A product in accordance with claim 1 wherein the pyridine compound is 4-ethylpyridine.
Claim 11
Dependent Claim
13 words
A product in accordance with claim 1 wherein the pyridine compound is 4-ethyl-2-methylpyridine.
Claim 12
Dependent Claim
13 words
A product in accordance with claim 1 wherein the pyridine compound is 3-ethyl-4-methylpyridine.
Claim 13
Dependent Claim
13 words
A product in accordance with claim 1 wherein the pyridine compound is 2,4,6-trimethylpyridine.
References Cited (Backward Citations)
US3288146A
Cited
US3381691A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-12-06 | 1975-06-07 | 1975-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-06 | 1979-06-07 | 1979-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-06 | 1983-06-07 | 1983-12-07 | $7700.00 | Window Closed / Lapsed |