Patent US2992154A successfully refreshed from Google Patents.
US2992154A
Expired / Lapsed
US
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Process for producing an article of curly interlocking cellulosic fibres and fibrils
Assignee: Cigarette Components Ltd
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Filing: 1957-04-11
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Granted: 1961-07-11
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Expires: 1977-04-11
Abstract
No abstract record available.
Inventors
- 👤 Mauthner Stella Anna
- 👤 Baumann Lawrence Lee
- 👤 Clark Peter John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:28
CPC Classifications
B; B01; B01D; B01D39/00; B01D39/14; B01D39/16; B01D39/18; A; A24; A24D; A24D3/00; A24D3/06; A24D3/08; A24D3/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
147 words
A PROCESS FOR THE PRODUCTION OF A MASS OF CURLY INTERLOCKING FIBRES AND FIBRILS FROM SUBSTANTIALLY STRAIGHT CELLULOSIC FIBRES OF THE KIND PRODUCED BY DECORTICATION FROM A PLANT SELECTED FROM THE GROUP CONSISTING OF ABACA, COIR. FLAX, HEMP, HENEQUEN, JUTE, KENAF, RAMIE, SISAL AND SUNN AND IN WHICH EACH FIBRE COMPRISES A BUNDLE OF FIBRILS, COMPRISING THE STEPS OF SUBJECTING THE CELLULOSIC FIBRES TO A LEACHING OPERATION IN AN AQUEOUS SOLUTION HAVING A SOLVENT EFFECT UPON THE BOND.NG AND GIMMING MATERIALS IN THE CELLULOSIC FIBERS TO LOOSEN THE BOND BETWEEN THE FIBRILS, DISCONTINUING SAIDLEACHING OPERATION BEFORE THE FIBRES HAVE DISINTEGRATED INTO FIBRIL, DRYING THE LEACHED FIBRES AND THEREFORE MECHANICALLY TREATING THE LEACHED FIBRES TO SPL.T THE FIBERS LONGITUDINALLY AT LEAST PARTLY INTO FIBRILS AND THEREBY TRANSFORM THE SUBSTANTIALLY STRAIGHT FIBERS INTO CURLED FIBRES EACH CONTAINING A NUMBER OF FIBRILS, AND FORMING SAID CURLED FIBRES INTO A ROD.
Claim 2
Dependent Claim
147 words
A PROCESS FOR THE PRODUCTION OF A MASS OF CURLY INTERLOCKING FIBRES AND FIBRILS FROM SUBSTANTIALLY STRAIGHT CELLULOSIC FIBRES OF THE KIND PRODUCED BY DECORTICATION FROM A PLANT SELECTED FROM THE GROUP CONSISTING OF ABACA, COIR. FLAX, HEMP, HENEQUEN, JUTE, KENAF, RAMIE, SISAL AND SUNN AND IN WHICH EACH FIBRE COMPRISES A BUNDLE OF FIBRILS, COMPRISING THE STEPS OF SUBJECTING THE CELLULOSIC FIBRES TO A LEACHING OPERATION IN AN AQUEOUS SOLUTION HAVING A SOLVENT EFFECT UPON THE BOND.NG AND GIMMING MATERIALS IN THE CELLULOSIC FIBERS TO LOOSEN THE BOND BETWEEN THE FIBRILS, DISCONTINUING SAIDLEACHING OPERATION BEFORE THE FIBRES HAVE DISINTEGRATED INTO FIBRIL, DRYING THE LEACHED FIBRES AND THEREFORE MECHANICALLY TREATING THE LEACHED FIBRES TO SPL.T THE FIBERS LONGITUDINALLY AT LEAST PARTLY INTO FIBRILS AND THEREBY TRANSFORM THE SUBSTANTIALLY STRAIGHT FIBERS INTO CURLED FIBRES EACH CONTAINING A NUMBER OF FIBRILS, AND FORMING SAID CURLED FIBRES INTO A ROD.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-10 | 1965-01-09 | 1965-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-10 | 1969-01-09 | 1969-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-10 | 1973-01-09 | 1973-07-11 | $7700.00 | Window Closed / Lapsed |