US2966157A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyolefin tobacco smoke filters
Assignee: Eastman Kodak Co
•
Filing: 1957-06-07
•
Granted: 1960-12-27
•
Expires: 1977-06-07
Abstract
No abstract record available.
Inventors
- 👤 George P Touey
- 👤 Robert C Mumpower
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 00:40
CPC Classifications
A; A24; A24D; A24D3/00; A24D3/06; A24D3/08; B; B01; B01D; B01D39/00; B01D39/14; B01D39/16; B01D39/1607; B01D39/1623
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
A TABACCO SMOKE FILTER CONSISTING ESSENTIALLY OF A BUNDLE OF CRIMPED CONTINUOUS POLYOLEFIN FIBERS WHICH FIBERS HAVE BEEN DRAFTED, SAID POLYOLEFIN AVING A MOLECULAR WEIGHT BETWEEN 30,000 AND 200,000 AND A SOFTENING POINT BETWEEN 85*C. AND 160*C., SAID FIBERS BEING OF A DENIER BETWEEN 2 AND 8 PER FILAMENT AND PRESENT IN THE FILTER IN AN AMOUNT BETWEEN 2,000 AND 40,000 FILAMENTS, SAID CRIMP BEING UP TO 40 CRIMPS PER INCH.
Claim 2
Dependent Claim
71 words
A TABACCO SMOKE FILTER CONSISTING ESSENTIALLY OF A BUNDLE OF CRIMPED CONTINUOUS POLYOLEFIN FIBERS WHICH FIBERS HAVE BEEN DRAFTED, SAID POLYOLEFIN AVING A MOLECULAR WEIGHT BETWEEN 30,000 AND 200,000 AND A SOFTENING POINT BETWEEN 85*C. AND 160*C., SAID FIBERS BEING OF A DENIER BETWEEN 2 AND 8 PER FILAMENT AND PRESENT IN THE FILTER IN AN AMOUNT BETWEEN 2,000 AND 40,000 FILAMENTS, SAID CRIMP BEING UP TO 40 CRIMPS PER INCH.
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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) | 1963-12-27 | 1964-06-27 | 1964-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-27 | 1968-06-27 | 1968-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-27 | 1972-06-27 | 1972-12-27 | $7700.00 | Window Closed / Lapsed |