US3861400A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nicotine fortification of smoking products
Assignee: Imperial Tobacco Ltd
•
Filing: 1972-09-12
•
Granted: 1975-01-21
•
Expires: 1992-09-12
Abstract
Abstract Controlled amounts of nicotine may be supplied to a tobacco product or acceptable substitute smoking composition by adding to the base small amounts of a nicotine derivative of galacturonic acid or polymannuronic acid which on pyrolysis of the composition release small amounts of nicotine into the smoke stream.
Inventors
- 👤 Paul Raymond Perkins
- 👤 Christopher Ralph Bale
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:54
CPC Classifications
A; A24; A24B; A24B15/00; A24B15/18; A24B15/28; A24B15/30; A24B15/36; A24B15/38
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
15 words
The process of claim 1 wherein the material is a nicotine derivative of polygalacturonic acid.
Claim 2
Dependent Claim
11 words
The process of claim 2 wherein the derivative is nicotine pectinate.
Claim 3
Dependent Claim
18 words
The process of claim 3 wherein the amount of dertive is 3 percent to 13 percent by weight.
Claim 4
Dependent Claim
33 words
The process of claim 4 wherein the additive is a nicotine derivative of pectinic acid having a degree of esterification of 25-40 percent and an acidity of 1.5 to 3.5 milliequivalents per gram.
Claim 5
Dependent Claim
15 words
The process of claim 1 wherein the material is a nicotine derivative of polymannuronic acid.
Claim 6
Dependent Claim
11 words
The process of claim 6 wherein the derivative is nicotine alginate.
References Cited (Backward Citations)
US3529602A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-01-20 | 1978-07-22 | 1979-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-20 | 1982-07-22 | 1983-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-20 | 1986-07-22 | 1987-01-21 | $7700.00 | Window Closed / Lapsed |