US3219043A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tobacco smoke filter plug
Assignee: Reeves Brothers Inc
•
Filing: 1961-06-02
•
Granted: 1965-11-23
•
Expires: 1981-06-02
Abstract
No abstract record available.
Inventors
- 👤 Victor L Erlich
- 👤 Teague Charles Houston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:49
CPC Classifications
A; A24; A24D; A24D3/00; A24D3/04; A24D3/06; A24D3/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
58 words
A ROD-LIKE FILTER ELEMENT SHORT ENOUGHT AND SLENDER ENOUGH TO FORM A FILTER PLUG IN A TOBACCO SMOKABLE ARTICLE, SUCH AS A CIGARETTE, AND HAVING SUFFICIENT PERMEABILITY TO DRAW TOBACCO SMOKE EASILY THERETHROUGH IN THE PROCESS OF SMOKING SAID ARTICLE, SAID ELEMENT BEING MAKE UP ESSENTIALLY OF SUBSTANTIALLY MOLECULARLY UNORIENTED POLY-ALPHA-OLEFIN FIBERS EXTENDING SIDE BY SIDE ALONG THE
Claim 2
Dependent Claim
58 words
A ROD-LIKE FILTER ELEMENT SHORT ENOUGHT AND SLENDER ENOUGH TO FORM A FILTER PLUG IN A TOBACCO SMOKABLE ARTICLE, SUCH AS A CIGARETTE, AND HAVING SUFFICIENT PERMEABILITY TO DRAW TOBACCO SMOKE EASILY THERETHROUGH IN THE PROCESS OF SMOKING SAID ARTICLE, SAID ELEMENT BEING MAKE UP ESSENTIALLY OF SUBSTANTIALLY MOLECULARLY UNORIENTED POLY-ALPHA-OLEFIN FIBERS EXTENDING SIDE BY SIDE ALONG THE
References Cited (Backward Citations)
GB380041A
Cited
US2357392A
Cited
US2474124A
Cited
US2459545A
Cited
US2688380A
Cited
CH320734A
Cited
US3039908A
Cited
US2774680A
Cited
US2916038A
Cited
US2825120A
Cited
US2828752A
Cited
US3023075A
Cited
US2904050A
Cited
US2908669A
Cited
US2966157A
Cited
US3092873A
Cited
US3025130A
Cited
US3019507A
Cited
US3144025A
Cited
US3038478A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-22 | 1969-05-24 | 1969-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-22 | 1973-05-24 | 1973-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-22 | 1977-05-24 | 1977-11-23 | $7700.00 | Window Closed / Lapsed |