US2792279A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Viscose composition and method of spinning
Assignee: Akzo Nobel UK PLC
•
Filing: 1953-09-21
•
Granted: 1957-05-14
•
Expires: 1973-09-21
Abstract
No abstract record available.
Inventors
- 👤 Marion R Lytton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:17
CPC Classifications
D; D01; D01F; D01F2/00; D01F2/06; D01F2/08; D01F2/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
THE METHOD OF PRODUCING SHAPED BODIES OF REGENERATED CELLULOSE CONSISTING ENTIRELY OF SKIN WHICH COMPRISES SPINNING VISCOSE CONTAINING A SMALL AMOUNT OF N.N.N''.N'' - TETRAETHANOL 1,3 - DIAMINO PROPANOL - 2, THE AMOUNT BEING BASED UPON THE WEIGHT OF THE VISCOSE INTO AN AQUEOUS ACIDIC SPINNING BATH CONTAINING ZINC SULFATE.
Claim 2
Independent Claim
50 words
THE METHOD OF PRODUCING SHAPED BODIES OF REGENERATED CELLULOSE CONSISTING ENTIRELY OF SKIN WHICH COMPRISES SPINNING VISCOSE CONTAINING A SMALL AMOUNT OF N.N.N''.N'' - TETRAETHANOL 1,3 - DIAMINO PROPANOL - 2, 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 |