US2530962A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Formation of shaped articles from acrylonitrile polymers
Assignee: EIDP Inc
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Filing: 1948-09-24
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Granted: 1950-11-21
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Expires: 1968-09-24
Abstract
No abstract record available.
Inventors
- 👤 Hare Weston Andrew
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:08
CPC Classifications
D; D01; D01F; D01F6/00; D01F6/02; D01F6/18
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
81 words
A PROCESS FOR WET SPINNING OF ACRYLONITRILE YARN WHICH COMPRISES EXTRUDING A SOLUTION, IN A VOLATILE ORGANIC SOLVENT OF AN ACRYLONITRILE POLYNER CONTAINING A MAJOR PORTION OF ACRYLONITRILE, THROUGH A SHAPED ORIFICE INTO A SPINNING BATH COMPRISING AN AQUEOUS, AT LEAST 12% (BY WEIGHT) SOLUTION OF A THIOSULFATE HEATED TO A TEMPERATURE OF AT LEAST 70*C., PASSING THE YARN THROUGH SAID BATH UNTIL IT IS SUBSTANTIALLY COMPLETELY COAGULATED AND STRETCHING THE YARN DURING ITS TRAVEL THROUGH THE BATH AT LEAST 100%.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-11-20 | 1954-05-22 | 1954-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-20 | 1958-05-22 | 1958-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-20 | 1962-05-22 | 1962-11-21 | $7700.00 | Window Closed / Lapsed |