US2792281A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Viscose composition and method of spinning
Assignee: Akzo Nobel UK PLC
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Filing: 1953-09-21
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Granted: 1957-05-14
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Expires: 1973-09-21
Abstract
No abstract record available.
Inventors
- 👤 Carl A Castellan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:04
CPC Classifications
D; D01; D01F; D01F2/00; D01F2/06; D01F2/08; D01F2/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
42 words
THE METHOD OF PRODUCING SHAPED BODIES OF REGENERATED CELLULOSE WHICH COMPRISES SPINNING VISCOSE INTO AN AQUEOUS ACIDIC SPINNING BATH CONTAINING ZINC SULFATE, THE VISCOSE CONTAINIG A SMALL AMOUNT, BASED UPON THE WEIGHT OF THE VISCOSE, OF A COMPOUND CORRESPONDING TO THE FORMULA
Claim 2
Independent Claim
42 words
THE METHOD OF PRODUCING SHAPED BODIES OF REGENERATED CELLULOSE WHICH COMPRISES SPINNING VISCOSE INTO AN AQUEOUS ACIDIC SPINNING BATH CONTAINING ZINC SULFATE, THE VISCOSE CONTAINIG A SMALL AMOUNT, BASED UPON THE WEIGHT OF THE VISCOSE, OF A COMPOUND CORRESPONDING TO THE FORMULA
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) | 1960-05-13 | 1960-11-12 | 1961-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-05-13 | 1964-11-12 | 1965-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-05-13 | 1968-11-12 | 1969-05-14 | $7700.00 | Window Closed / Lapsed |