US2549014A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of cellulosic fibers
Assignee: Uniroyal Inc
•
Filing: 1945-06-22
•
Granted: 1951-04-17
•
Expires: 1965-06-22
Abstract
No abstract record available.
Inventors
- 👤 Jr Hendrik Romeyn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:09
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/10; D06M13/224
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
A METHOD OF IMPROVING THE TENSILE STRENGTH OF STRANDED GREY COTTON FIBERS WHICH COMPRISES SUBJECTING THEM TO SUCCESSIVE CONTACT WITH TWO LIQUIDS, ONE BEING A DILUTE AQUEOUS AMMONIA SOLUTION, AND THE OTHER BEING AN ORGANIC LIQUID HAVING THE PROPERTY OF DISSOLVING COTTOM WAXES COMPRISING AN ALKYL ACETATE THE ALKYL GROUP HAVINGFROM 3 TO 5 CARBON ATOMS, THE SOLVENT TREATMENT BEING CARRIED OUT AT A TEMPERATURE SUBSTANTIALLY ABOVE 25* C., BUT NOT IN EXCESS OF 150* C., THE ENTIRE LIQUID TREATMENT ALLOWING MAINTENANCE IN THE FIBERS OF A SUBSTANTIAL PROPORTION OF THE ORIGINAL COTTON WAXES, AND DRYING THE FIBERS, AND MAINTAINING THE STRANDED FIBERS UNDER A MARKED TENSION MATERIALLY LESS THAN THE BREAKING STRENGTH OF THE UNTREATED STRANDED FIBERS DURING AT LEAST PART OF THE LIQUID TREATMENT.
Claim 2
Independent Claim
126 words
A METHOD OF IMPROVING THE TENSILE STRENGTH OF STRANDED GREY COTTON FIBERS WHICH COMPRISES SUBJECTING THEM TO SUCCESSIVE CONTACT WITH TWO LIQUIDS, ONE BEING A DILUTE AQUEOUS AMMONIA SOLUTION, AND THE OTHER BEING AN ORGANIC LIQUID HAVING THE PROPERTY OF DISSOLVING COTTOM WAXES COMPRISING AN ALKYL ACETATE THE ALKYL GROUP HAVINGFROM 3 TO 5 CARBON ATOMS, THE SOLVENT TREATMENT BEING CARRIED OUT AT A TEMPERATURE SUBSTANTIALLY ABOVE 25* C., BUT NOT IN EXCESS OF 150* C., THE ENTIRE LIQUID TREATMENT ALLOWING MAINTENANCE IN THE FIBERS OF A SUBSTANTIAL PROPORTION OF THE ORIGINAL COTTON WAXES, AND DRYING THE FIBERS, AND MAINTAINING THE STRANDED FIBERS UNDER A MARKED TENSION MATERIALLY LESS THAN THE BREAKING STRENGTH OF THE UNTREATED STRANDED FIBERS DURING AT LEAST PART OF THE LIQUID TREATMENT.
References Cited (Backward Citations)
US909457A
Cited
US1398378A
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US1596100A
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US1962424A
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US2156923A
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US2126809A
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US2137339A
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US2173997A
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US2298787A
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GB545716A
Cited
US2364467A
Cited
US2297536A
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US2372561A
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US2346126A
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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) | 1954-04-16 | 1954-10-16 | 1955-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-16 | 1958-10-16 | 1959-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-16 | 1962-10-16 | 1963-04-17 | $7700.00 | Window Closed / Lapsed |