US2792280A
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
- 👤 Byron A Thumm
- 👤 Marion R Lytton
- 👤 John A Howsmon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:15
CPC Classifications
D; D01; D01F; D01F2/00; D01F2/06; D01F2/08; D01F2/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
THE METHOD OF PRODUCING SHAPED BODIES OF REGENERATED CELLULOSE CONSISTING ENTIRELY OF SKIN WHICH COMPRISES SPINNING VISCOSE CONTAINING A SMALL AMOUNT OF LOWER ALKYLOL DERIVATIVE OF PYRIDINE, THE ALKYLOL GROUP CONTAINING NOT MORE THAN FOUR CARBON ATOMS, THE AMOUNT BEING BASED UPON THE WEIGHT OF THE VISCOSE, INTO AN AQUEOUS ACIDIC SPINNING BATH CONTAINING ZINC SULFATE.
Claim 2
Independent Claim
56 words
THE METHOD OF PRODUCING SHAPED BODIES OF REGENERATED CELLULOSE CONSISTING ENTIRELY OF SKIN WHICH COMPRISES SPINNING VISCOSE CONTAINING A SMALL AMOUNT OF LOWER ALKYLOL DERIVATIVE OF PYRIDINE, THE ALKYLOL GROUP CONTAINING NOT MORE THAN FOUR CARBON ATOMS, THE AMOUNT BEING BASED UPON THE WEIGHT OF THE VISCOSE, INTO AN AQUEOUS ACIDIC SPINNING BATH CONTAINING ZINC SULFATE.
References Cited (Backward Citations)
US2535044A
Cited
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 |