Patent US2536014A successfully refreshed from Google Patents.
US2536014A
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Spinning of viscose
Assignee: EIDP Inc
•
Filing: 1946-12-14
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Granted: 1950-12-26
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Expires: 1966-12-14
Abstract
No abstract record available.
Inventors
- 👤 Cox Norman Louis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:01
CPC Classifications
D; D01; D01F; D01F2/00; D01F2/06; D01F2/08; D01F2/10; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2964; Y10T428/2965; Y10T428/2973; Y10T428/2978
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
A METHOD OF PRODUCING REGENERATED CELLULOSIC STRUCTURES WHICH COMPRISES THE STEP OF SPINNING A VISCOSE SOLUTION IN A SPINNING BATH COMPRISING AN AQUEOUS SOLUTION OF SULFURIC ACID CONTAINING FROM 1% TO 15% ZINC SULFATE, THE SAID SPINNING BEING CONDUCTED IN THE PRESENCE OF ABOUT 0.5 TO ABOUT 10.0 MILLIMOLES PER 100 GRAMS OF ONE OF SAID SOLUTIONS OF A WATER-SOLUBLE QUATERNARY AMMONIUM COMPOUND OF THE FORMULA
Claim 2
Independent Claim
66 words
A METHOD OF PRODUCING REGENERATED CELLULOSIC STRUCTURES WHICH COMPRISES THE STEP OF SPINNING A VISCOSE SOLUTION IN A SPINNING BATH COMPRISING AN AQUEOUS SOLUTION OF SULFURIC ACID CONTAINING FROM 1% TO 15% ZINC SULFATE, THE SAID SPINNING BEING CONDUCTED IN THE PRESENCE OF ABOUT 0.5 TO ABOUT 10.0 MILLIMOLES PER 100 GRAMS OF ONE OF SAID SOLUTIONS OF A WATER-SOLUBLE QUATERNARY AMMONIUM COMPOUND OF THE FORMULA
References Cited (Backward Citations)
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US2125031A
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NL51307C
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US2310207A
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US2345570A
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US2412969A
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US2517694A
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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) | 1953-12-25 | 1954-06-26 | 1954-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-25 | 1958-06-26 | 1958-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-25 | 1962-06-26 | 1962-12-26 | $7700.00 | Window Closed / Lapsed |