US2881769A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fibrous cigarette filters
Assignee: Eastman Kodak Co
•
Filing: 1954-03-03
•
Granted: 1959-04-14
•
Expires: 1974-03-03
Abstract
No abstract record available.
Inventors
- 👤 George P Touey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:13
CPC Classifications
A; A24; A24D; A24D3/00; A24D3/06; A24D3/14; B; B01; B01D; B01D39/00; B01D39/14; B01D39/16; B01D39/1607; B01D39/1623; B01D39/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
A TOBACCO SMOKE FILTER ADAPTED TO REMOVE CERTAIN UNDESIRABLE COMPONENTS FROM TOBACCO SMOKE, SAID FILTER BEING COMPRISED OF A BUNDLE OF CONTINUOUS, LONGITUDINALLY ALIGNED FILAMENTS IN WHICH SUBSTANTIALLY ALL OF THE FILAMENTS EXTEND THROUGH THE FULL LENGTH OF THE FILTER FROM END TO END, SAID FILAMENTS BEING ESSENTIALLY COMPRISED OF CELLULOSE ACETATE AND A PLASTICIZER THEREFOR, SAID FILAMENTS CARRYING ON THEIR SURFACE SOLID FINELY DIVIDED VEGATABLE STARCH SUBSTANTIALLY UNIFORMLY DISPERSED OVER THE SURFACE OF THE FILAMENTS AND A WRAPPER AROUND THE CIRCUMEFERENCE OF SAID BUNDLE.
Claim 2
Dependent Claim
85 words
A TOBACCO SMOKE FILTER ADAPTED TO REMOVE CERTAIN UNDESIRABLE COMPONENTS FROM TOBACCO SMOKE, SAID FILTER BEING COMPRISED OF A BUNDLE OF CONTINUOUS, LONGITUDINALLY ALIGNED FILAMENTS IN WHICH SUBSTANTIALLY ALL OF THE FILAMENTS EXTEND THROUGH THE FULL LENGTH OF THE FILTER FROM END TO END, SAID FILAMENTS BEING ESSENTIALLY COMPRISED OF CELLULOSE ACETATE AND A PLASTICIZER THEREFOR, SAID FILAMENTS CARRYING ON THEIR SURFACE SOLID FINELY DIVIDED VEGATABLE STARCH SUBSTANTIALLY UNIFORMLY DISPERSED OVER THE SURFACE OF THE FILAMENTS AND A WRAPPER AROUND THE CIRCUMEFERENCE OF SAID BUNDLE.
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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) | 1962-04-13 | 1962-10-13 | 1963-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-13 | 1966-10-13 | 1967-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-13 | 1970-10-13 | 1971-04-14 | $7700.00 | Window Closed / Lapsed |