Patent US2954773A successfully refreshed from Google Patents.
US2954773A
Expired / Lapsed
US
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Cigarette filters and method of making same
Assignee: Mac Farland Aveyard & Co
•
Filing: 1958-01-23
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Granted: 1960-10-04
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Expires: 1978-01-23
Abstract
No abstract record available.
Inventors
- 👤 Herbert A Lebert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:04
CPC Classifications
A; A24; A24D; A24D3/00; A24D3/04; A24D3/045
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
A METHOD OF MANUFACTURING FILTER TIPS FOR CIGARETTES COMPRISING EXTRUDING A LENGTH OF CELLULOSE FIBERS, AT SELECTED INTERVALS REDUCING THE DIAMETER OF LOCALIZED AREAS ALONG THE LENGTH OF CELLULOSE FIBERS BY COMPACTING THE CELLULOSE FIBERS AND FUSING THE COMPACTED CELLULOSE FIBERS TOGETHER AT THE LOCALIZED AREA, WHERE THE DIAMETER HAS BEEN REDUCED FORMING THERETHROUGH A VENTURI PASSAGEWAY OF ABOUT .025"-.038" DIAMETER, AND DIVIDING THE LENGTH OF CELLULOSE FIBERS INTO A SERIES OF FILTER TIPS FOR CIGARETTES EACH HAVING ONE OF THE VENTURI PASSAGEWAYS.
Claim 2
Independent Claim
83 words
A METHOD OF MANUFACTURING FILTER TIPS FOR CIGARETTES COMPRISING EXTRUDING A LENGTH OF CELLULOSE FIBERS, AT SELECTED INTERVALS REDUCING THE DIAMETER OF LOCALIZED AREAS ALONG THE LENGTH OF CELLULOSE FIBERS BY COMPACTING THE CELLULOSE FIBERS AND FUSING THE COMPACTED CELLULOSE FIBERS TOGETHER AT THE LOCALIZED AREA, WHERE THE DIAMETER HAS BEEN REDUCED FORMING THERETHROUGH A VENTURI PASSAGEWAY OF ABOUT .025"-.038" DIAMETER, AND DIVIDING THE LENGTH OF CELLULOSE FIBERS INTO A SERIES OF FILTER TIPS FOR CIGARETTES EACH HAVING ONE OF THE VENTURI PASSAGEWAYS.
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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) | 1963-10-04 | 1964-04-04 | 1964-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-04 | 1968-04-04 | 1968-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-04 | 1972-04-04 | 1972-10-04 | $7700.00 | Window Closed / Lapsed |