US2996065A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for forming filter cigarettes
Assignee: Individual
•
Filing: 1958-09-09
•
Granted: 1961-08-15
•
Expires: 1978-09-09
Abstract
No abstract record available.
Inventors
- 👤 Oliver S North
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:08
CPC Classifications
A; A24; A24D; A24D1/00; A24D1/18; A24B; A24B15/00; A24B15/18; A24B15/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
IN A SMOKING MIXTURE FORMED BY INTIMATELY ADMIXING FLAKES OF UNEXPANDED VERMICULITE WITH TOBACCO TO OBTAIN A MIXTURE OF FROM 1-5% VERMICULITE IN FROM 95 TO 99% OF TOBACCO, THE IMPROVEMENT WHICH COMPRISES: DEPOSITING THE FLAKES OF UNEXPANDED VERMICULITE AND TOBACCO ONTO A SUPPORT WITH SUBSTANTIALLY ALL OF THE FLAKES OF UNEXPANDED VERMICULITE ALIGNED IN A COMMON ORIENTATION AND THEREAFTER FORMING THE MIXTURE INTO A SMOKING TOBACCO PRODUCT WHEREIN THE BASAL CLEAVAGE PLANES IN THE UNEXPANDED VERMICULITE AND THE DIRECTION OF DRAW OF THE SMOKING PRODUCT ARE PARALLEL TO ONE ANOTHER.
Claim 2
Dependent Claim
91 words
IN A SMOKING MIXTURE FORMED BY INTIMATELY ADMIXING FLAKES OF UNEXPANDED VERMICULITE WITH TOBACCO TO OBTAIN A MIXTURE OF FROM 1-5% VERMICULITE IN FROM 95 TO 99% OF TOBACCO, THE IMPROVEMENT WHICH COMPRISES: DEPOSITING THE FLAKES OF UNEXPANDED VERMICULITE AND TOBACCO ONTO A SUPPORT WITH SUBSTANTIALLY ALL OF THE FLAKES OF UNEXPANDED VERMICULITE ALIGNED IN A COMMON ORIENTATION AND THEREAFTER FORMING THE MIXTURE INTO A SMOKING TOBACCO PRODUCT WHEREIN THE BASAL CLEAVAGE PLANES IN THE UNEXPANDED VERMICULITE AND THE DIRECTION OF DRAW OF THE SMOKING PRODUCT ARE PARALLEL TO ONE ANOTHER.
References Cited (Backward Citations)
US2786471A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-14 | 1965-02-13 | 1965-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-14 | 1969-02-13 | 1969-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-14 | 1973-02-13 | 1973-08-15 | $7700.00 | Window Closed / Lapsed |