US2519227A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of yarns and the like
Assignee: Akzo Nobel UK PLC
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Filing: 1947-05-28
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Granted: 1950-08-15
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Expires: 1967-05-28
Abstract
No abstract record available.
Inventors
- 👤 Benjamin W Collins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 12:21
CPC Classifications
D; D01; D01F; D01F2/00; D01F2/06; D01F2/08; D01F2/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
THE METHOD OF FORMING ARTIFICAL FLAMENTS COMPRISING EXTRUDING FISCOSE INTO AN AQUEOUS ACID COAGULATING LIQUID IN THE PRESENCE OF A SMALL AMOUNT OF A DISSOLVED, SUBSTANTIALLY STABLE SURFACE-ACTIVE NON-IONOGENIC ACETAL OF A POLYETHYLENE GLYCOL CONTAINING A HYDROPHOBIC GROUP COMPRISING A HYDROCARBON CHAIN OF AT LEAST 8 CARBON ATOMS AND CONTAINING AT LEAST 8 OXYETHYLENE UNITS PER MOLECULE AND A SUFFICIENT NUMBER OF SUCH UNITS IN EXCESS OF EIGHT TO RENDER THE COMPOUND SUBSTANTIALLY SOLUBLE IN THE VISCOSE SOLUTION.
Claim 2
Independent Claim
78 words
THE METHOD OF FORMING ARTIFICAL FLAMENTS COMPRISING EXTRUDING FISCOSE INTO AN AQUEOUS ACID COAGULATING LIQUID IN THE PRESENCE OF A SMALL AMOUNT OF A DISSOLVED, SUBSTANTIALLY STABLE SURFACE-ACTIVE NON-IONOGENIC ACETAL OF A POLYETHYLENE GLYCOL CONTAINING A HYDROPHOBIC GROUP COMPRISING A HYDROCARBON CHAIN OF AT LEAST 8 CARBON ATOMS AND CONTAINING AT LEAST 8 OXYETHYLENE UNITS PER MOLECULE AND A SUFFICIENT NUMBER OF SUCH UNITS IN EXCESS OF EIGHT TO RENDER THE COMPOUND SUBSTANTIALLY SOLUBLE IN THE VISCOSE SOLUTION.
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) | 1953-08-14 | 1954-02-13 | 1954-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-14 | 1958-02-13 | 1958-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-14 | 1962-02-13 | 1962-08-15 | $7700.00 | Window Closed / Lapsed |