Patent US2942931A successfully refreshed from Google Patents.
US2942931A
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Viscose process
Assignee: Rayonier Inc
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Filing: 1959-05-05
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Granted: 1960-06-28
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Expires: 1979-05-05
Abstract
No abstract record available.
Inventors
- 👤 Mitchell Reid Logan
- 👤 Berry James Wesley
- 👤 Wadman William Hughes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:22
CPC Classifications
D; D01; D01F; D01F2/00; D01F2/06; D01F2/08; D01F2/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
THE IMPROVEMENT IN THE VISCOSE PROCESS WHICH COMPRISES SPINNING VISCOSE HAVING THEREIN A REGENERATION RETARDANT MIXTURE OF POLYETHYLENE GLYCOL AND DIMETHYLAMINE IN THE AMOUNTS VARYING FROM 0.05 TO 0.5% EACH, BASED ON THE WEIGHT OF THE VISCOSE, INTO A COAGULATING AND REGENERATING ACID SPIN-BATH, STRETCHING THE FILEMENTS AT LEAST 70% WHILE IN CONTACT WITH THE SPIN-BATH PRODUCING HIGH-TENACITY FILAMENTS CAPABLE OF BEING SPUN IN EXCESS OF 70 METERS PER MINUTE.
Claim 2
Dependent Claim
70 words
THE IMPROVEMENT IN THE VISCOSE PROCESS WHICH COMPRISES SPINNING VISCOSE HAVING THEREIN A REGENERATION RETARDANT MIXTURE OF POLYETHYLENE GLYCOL AND DIMETHYLAMINE IN THE AMOUNTS VARYING FROM 0.05 TO 0.5% EACH, BASED ON THE WEIGHT OF THE VISCOSE, INTO A COAGULATING AND REGENERATING ACID SPIN-BATH, STRETCHING THE FILEMENTS AT LEAST 70% WHILE IN CONTACT WITH THE SPIN-BATH PRODUCING HIGH-TENACITY FILAMENTS CAPABLE OF BEING SPUN IN EXCESS OF 70 METERS PER MINUTE.
References Cited (Backward Citations)
US2696423A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-28 | 1963-12-28 | 1964-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-28 | 1967-12-28 | 1968-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-28 | 1971-12-28 | 1972-06-28 | $7700.00 | Window Closed / Lapsed |