US3126009A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filter-tips
Assignee: —
•
Filing: —
•
Granted: 1964-03-24
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Expires: 1981-03-24
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:27
CPC Classifications
A; A24; A24D; A24D3/00; A24D3/06; A24D3/08; A24D3/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
A CIGARETTE FILTER TIP COPRISING A POROUS ROD OF PLASTICIZER-CONTAINING CELLULOSE ACETATE FLAKE HAVING AN ACETYL VALUE IN EXCESS OF ABOUT 52% BY WEIGHT CALCULATED AS COMBINED ACETIC ACID, HAVING A BULK DENSITY LESS THAN ABOUT 20 POUNDS PER CUBIC FOOT AND A PARTICLE SIZE OF ABOUT 5 TO 20 MESH, A SUBSTANTIAL PROPORTION OF THE PARTICLES HAVING A PARTICLE SIZE OF ABOUT 5 TO 10 MESH, THE FLAKE PARTICLES BEING COHERED AT POINTS OF CONTACT.
Claim 2
Dependent Claim
76 words
A CIGARETTE FILTER TIP COPRISING A POROUS ROD OF PLASTICIZER-CONTAINING CELLULOSE ACETATE FLAKE HAVING AN ACETYL VALUE IN EXCESS OF ABOUT 52% BY WEIGHT CALCULATED AS COMBINED ACETIC ACID, HAVING A BULK DENSITY LESS THAN ABOUT 20 POUNDS PER CUBIC FOOT AND A PARTICLE SIZE OF ABOUT 5 TO 20 MESH, A SUBSTANTIAL PROPORTION OF THE PARTICLES HAVING A PARTICLE SIZE OF ABOUT 5 TO 10 MESH, THE FLAKE PARTICLES BEING COHERED AT POINTS OF CONTACT.
References Cited (Backward Citations)
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US2900988A
Cited
US2806474A
Cited
US2774680A
Cited
US2780228A
Cited
US2828752A
Cited
US2768913A
Cited
US2966198A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-03-24 | 1967-09-23 | 1968-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-24 | 1971-09-23 | 1972-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-24 | 1975-09-23 | 1976-03-24 | $7700.00 | Window Closed / Lapsed |