US2611928A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for producing high tenacity artificial yarn and cord
Assignee: Akzo Nobel UK PLC
•
Filing: 1948-11-23
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Granted: 1952-09-30
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Expires: 1968-11-23
Abstract
No abstract record available.
Inventors
- 👤 Howard D Merion
- 👤 Henry J Mcdermott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:57
CPC Classifications
D; D01; D01D; D01D1/00; D01D1/06; D01F; D01F2/00; D01F2/06; Y; Y10; Y10S; Y10S264/00; Y10S264/27
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
A PROCESS OF PRODUCING HIGH TENACITY REGENERATED CELLULOSE FILAMENTS HAVING ALONG FLEX-LIFE COMPRISING THE STEPS OF EXTRUDING VISCOSE HAVING A TEMPERATURE OF 30* C. TO ABOUT 70* C. INTO AN ACID REGENERATING AND COAGULATING BATH HAVING A TEMPERATURE OF AT LEAST 40* C., STRETCHING THE FILAMENTS 40 TO 80% AFTER PARTIAL REGENERATION BUT BEFORE COMPLETE REGENERATION, WASHING THE FILAMENTS AND COMPLETING THE REGENERATION, RELAXING THE FILAMENTS 3 TO 10%, AND DRYING THEM.
Claim 2
Dependent Claim
72 words
A PROCESS OF PRODUCING HIGH TENACITY REGENERATED CELLULOSE FILAMENTS HAVING ALONG FLEX-LIFE COMPRISING THE STEPS OF EXTRUDING VISCOSE HAVING A TEMPERATURE OF 30* C. TO ABOUT 70* C. INTO AN ACID REGENERATING AND COAGULATING BATH HAVING A TEMPERATURE OF AT LEAST 40* C., STRETCHING THE FILAMENTS 40 TO 80% AFTER PARTIAL REGENERATION BUT BEFORE COMPLETE REGENERATION, WASHING THE FILAMENTS AND COMPLETING THE REGENERATION, RELAXING THE FILAMENTS 3 TO 10%, AND DRYING THEM.
References Cited (Backward Citations)
GB345938A
Cited
US2293825A
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US2348415A
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US2413123A
Cited
US2427993A
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US2433733A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-09-30 | 1956-03-31 | 1956-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-30 | 1960-03-31 | 1960-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-30 | 1964-03-31 | 1964-09-30 | $7700.00 | Window Closed / Lapsed |