US2828752A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fibrous tobacco smoke filters
Assignee: Eastman Kodak Co
•
Filing: 1954-08-16
•
Granted: 1958-04-01
•
Expires: 1974-08-16
Abstract
No abstract record available.
Inventors
- 👤 Wallace T Jackson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:32
CPC Classifications
A; A24; A24D; A24D3/00; A24D3/02; A24D3/0229; A24D3/0237; A24D3/04; D; D01; D01D; D01D5/00; D01D5/253
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
A TOBACCO SMOKE FILTERING ELEMENT COMPRISING A STRUCTURALLY UNITARY, ELONGATED ROD-LIKE MASS OF CELLULOSE ACETATE FILAMENTS AND A WRAPPER ENCIRCLING THE MASS, SAID COMPRISING A SEGEMENT OF A CRIMPLED TOW OF CONUS FILAMENTS, THE FILAMENTS GENERALLY BEING IN SUBAL ALIGNMENT LONGITUDINALLY OF THE MASS BUT SUBALLY EVERY INDIVIDUAL FILAMENT HAVING NON-ORIENTED SHORT PORTIONS THEREOF DISPOSED RANDOMLY IN DIVERGING AND CONVERGING RELATIONSHIP TO THE MAIN FILAMENT AXIS, SUBSTANTIALLY EVERY FILAMENT HAVING SURFACE SOLVATION BONDS PROVIDED BY COALSCED PORTIONS OF CONTACTING FIBERS, SAID PORTIONS CONTAINING A PLASTICIZER HAVING A SOFTENING ACTION ON THE FILAMENTS, AT LEAST A SUBSTANTIAL PORTION OF THE FILAMENTS HAVING A SUBSTANTIALLY UNIFORM Y-SHAPED CROSS SECTION AND THE FIALMENTS OF THE MASS BEING UNIFORMLY DISTRIBUTED THROUGHOUT THE TRANSVERSE SECTION OF THE MASS THEREBY PROVIDING A DECHANMELIZED CONDITION IN THE ELEMENT.
Claim 2
Dependent Claim
131 words
A TOBACCO SMOKE FILTERING ELEMENT COMPRISING A STRUCTURALLY UNITARY, ELONGATED ROD-LIKE MASS OF CELLULOSE ACETATE FILAMENTS AND A WRAPPER ENCIRCLING THE MASS, SAID COMPRISING A SEGEMENT OF A CRIMPLED TOW OF CONUS FILAMENTS, THE FILAMENTS GENERALLY BEING IN SUBAL ALIGNMENT LONGITUDINALLY OF THE MASS BUT SUBALLY EVERY INDIVIDUAL FILAMENT HAVING NON-ORIENTED SHORT PORTIONS THEREOF DISPOSED RANDOMLY IN DIVERGING AND CONVERGING RELATIONSHIP TO THE MAIN FILAMENT AXIS, SUBSTANTIALLY EVERY FILAMENT HAVING SURFACE SOLVATION BONDS PROVIDED BY COALSCED PORTIONS OF CONTACTING FIBERS, SAID PORTIONS CONTAINING A PLASTICIZER HAVING A SOFTENING ACTION ON THE FILAMENTS, AT LEAST A SUBSTANTIAL PORTION OF THE FILAMENTS HAVING A SUBSTANTIALLY UNIFORM Y-SHAPED CROSS SECTION AND THE FIALMENTS OF THE MASS BEING UNIFORMLY DISTRIBUTED THROUGHOUT THE TRANSVERSE SECTION OF THE MASS THEREBY PROVIDING A DECHANMELIZED CONDITION IN THE ELEMENT.
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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) | 1961-03-31 | 1961-09-30 | 1962-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-31 | 1965-09-30 | 1966-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-31 | 1969-09-30 | 1970-04-01 | $7700.00 | Window Closed / Lapsed |