Patent US2794239A successfully refreshed from Google Patents.
US2794239A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tow for use in the production of tobacco smoke filters
Assignee: Eastman Kodak Co
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Filing: 1952-12-05
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Granted: 1957-06-04
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Expires: 1972-12-05
Abstract
No abstract record available.
Inventors
- 👤 Robert T Crawford
- 👤 Joel B Stevens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:18
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/10; D06M13/224; A; A24; A24D; A24D3/00; A24D3/02; A24D3/0204; A24D3/0212; A24D3/022; A24D3/0229; A24D3/0237; A24D3/06; A24D3/14; B; B01; B01D; B01D39/00; B01D39/14; B01D39/16; B01D39/18; D02; D02G; D02G1/00; D02G1/12; D06M13/144; D06M7/00; D06M2200/00; D06M2200/40; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2922; Y10T428/2933; Y10T428/2964; Y10T428/2965; Y10T428/2967; Y10T428/2969; Y10T428/298
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
AN ARTICLE OF MANUFACTURE COMPRISING AN INTERMEDIATE PRODUCT FOR USE IN THE MANUFACTURE OF FIBROUS CIGARETTE FILTER TIP ELEMENTS OF WHICH ALL FIBERS ARE COEXTENSIVE, SAID INTERMEDIATE PRODUCT BEING A PACKAGED, SUBSTANTIALLY UNTWISTED, ELONGATE, CONTINUOUS FILAMENT TOW OF WHICH THE FILAMENTS IN THE AGGREGATE ARE SUBSTANTIALLY PARALLEL, SAID TOW HAVING FILAMENTS OF AN UNPLASTICIZED BY PLASTICIZABLE, DRY-SPUN, CELLULOSE ACETATE HAVING AN ACETYL CONTENT OF ABOUT 38-41%, SAID FILAMENTS BEING OF ABOUT 3 TO ABOUT 16 DENIER PER FILAMENT AND THE TOTAL DINER OF THE TOW BEING WITHIN A RANGE CORRESPONDING TO ABOUT 80,000 TO
Claim 2
Dependent Claim
94 words
AN ARTICLE OF MANUFACTURE COMPRISING AN INTERMEDIATE PRODUCT FOR USE IN THE MANUFACTURE OF FIBROUS CIGARETTE FILTER TIP ELEMENTS OF WHICH ALL FIBERS ARE COEXTENSIVE, SAID INTERMEDIATE PRODUCT BEING A PACKAGED, SUBSTANTIALLY UNTWISTED, ELONGATE, CONTINUOUS FILAMENT TOW OF WHICH THE FILAMENTS IN THE AGGREGATE ARE SUBSTANTIALLY PARALLEL, SAID TOW HAVING FILAMENTS OF AN UNPLASTICIZED BY PLASTICIZABLE, DRY-SPUN, CELLULOSE ACETATE HAVING AN ACETYL CONTENT OF ABOUT 38-41%, SAID FILAMENTS BEING OF ABOUT 3 TO ABOUT 16 DENIER PER FILAMENT AND THE TOTAL DINER OF THE TOW BEING WITHIN A RANGE CORRESPONDING TO ABOUT 80,000 TO
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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) | 1960-06-03 | 1960-12-03 | 1961-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-06-03 | 1964-12-03 | 1965-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-06-03 | 1968-12-03 | 1969-06-04 | $7700.00 | Window Closed / Lapsed |