US2928400A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fibrous tobacco smoke filters
Assignee: Eastman Kodak Co
•
Filing: 1954-06-24
•
Granted: 1960-03-15
•
Expires: 1974-06-24
Abstract
No abstract record available.
Inventors
- 👤 George P Touey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:39
CPC Classifications
A; A24; A24D; A24D3/00; A24D3/06; A24D3/14; A24D3/02; A24D3/0204; A24D3/0212; B; B01; B01D; B01D39/00; B01D39/14; B01D39/16; B01D39/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
A TOBACCO SMOKE FILTER COMPRISING AND ELONGATED, SUBSTANTIALLY UNITARY CYLINDER OF SUBSTANTIALLY ORIENTED, SUBSTANTIALLY COEXTENSIVE, CRIMPED, CELLULOSE ACETATE FILAMENTS GENERALLY EXTENDING MAINLY LONGITUDINALLY OF THE CYLINDER AND PROVIDING PASSAGES FOR SMOKE THERETHROUGH, A DEPOSIT UNIFORMLY DISPERSED THROUGHOUT THE CYLINDER OF ABOUT 5%-60% BY WEIGHT OF SOLID, FINELY DIVIDED HYDROPHILIC NATURAL GUM CARRIED ON THE SURFACES OF FILAMENTS, AND A LIQUID PLASTICIZER WHICH SERVES THE DUAL PURPOSE OF CASING ADHERENCE BETWEEN THE FILAMENTS AT RANDOM POINTS AND FOR CAUSING ADHERENCE OF THE FINELY DIVIDED GUM TO THE FILAMENTS, SAID FILTER CONTAINING A PAPER WRAPPER AROUND THE PERIPHERY OF SAID CYLINDER.
Claim 2
Dependent Claim
99 words
A TOBACCO SMOKE FILTER COMPRISING AND ELONGATED, SUBSTANTIALLY UNITARY CYLINDER OF SUBSTANTIALLY ORIENTED, SUBSTANTIALLY COEXTENSIVE, CRIMPED, CELLULOSE ACETATE FILAMENTS GENERALLY EXTENDING MAINLY LONGITUDINALLY OF THE CYLINDER AND PROVIDING PASSAGES FOR SMOKE THERETHROUGH, A DEPOSIT UNIFORMLY DISPERSED THROUGHOUT THE CYLINDER OF ABOUT 5%-60% BY WEIGHT OF SOLID, FINELY DIVIDED HYDROPHILIC NATURAL GUM CARRIED ON THE SURFACES OF FILAMENTS, AND A LIQUID PLASTICIZER WHICH SERVES THE DUAL PURPOSE OF CASING ADHERENCE BETWEEN THE FILAMENTS AT RANDOM POINTS AND FOR CAUSING ADHERENCE OF THE FINELY DIVIDED GUM TO THE FILAMENTS, SAID FILTER CONTAINING A PAPER WRAPPER AROUND THE PERIPHERY OF SAID CYLINDER.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-15 | 1963-09-14 | 1964-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-15 | 1967-09-14 | 1968-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-15 | 1971-09-14 | 1972-03-15 | $7700.00 | Window Closed / Lapsed |