US2928399A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fibrous tobacco smoke filter
Assignee: Eastman Kodak Co
•
Filing: 1954-05-27
•
Granted: 1960-03-15
•
Expires: 1974-05-27
Abstract
No abstract record available.
Inventors
- 👤 George P Touey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 12:51
CPC Classifications
A; A24; A24D; A24D3/00; A24D3/06; A24D3/14; B; B01; B01D; B01D39/00; B01D39/14; B01D39/16; B01D39/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
A TOBACCO SMOKE FILTER ELEMENT CONSISTING ESSENTIALLY OF ROD-LIKE MEMBER OF CRIMPED, CONTINUOUS FILAMENTS OF A YARN-LIKE CELLULOSE ACETATE OF NOT GREATER THAN 5 DENIER PER FILAMENT AND OF A TOTAL DENIER NOT GREATER THAN APPROXIMATELY 100,000, SAID MEMBER CONTAINING PLASTICIZER FOR THE CELLULOSE ACETATE AND THE FILAMENTS HAVING A CONTENT OF CASEIN POWDER ON THEIR SURFACE, AND A WRAPPER AROUND THE PERIPHERY OF THE FILTER ELEMENT AND THE FILTER ELEMENT BY WEIGHT OF SAID COMPONENTS BEING ABOUT 25
Claim 2
Dependent Claim
79 words
A TOBACCO SMOKE FILTER ELEMENT CONSISTING ESSENTIALLY OF ROD-LIKE MEMBER OF CRIMPED, CONTINUOUS FILAMENTS OF A YARN-LIKE CELLULOSE ACETATE OF NOT GREATER THAN 5 DENIER PER FILAMENT AND OF A TOTAL DENIER NOT GREATER THAN APPROXIMATELY 100,000, SAID MEMBER CONTAINING PLASTICIZER FOR THE CELLULOSE ACETATE AND THE FILAMENTS HAVING A CONTENT OF CASEIN POWDER ON THEIR SURFACE, AND A WRAPPER AROUND THE PERIPHERY OF THE FILTER ELEMENT AND THE FILTER ELEMENT BY WEIGHT OF SAID COMPONENTS BEING ABOUT 25
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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 |