US2581835A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of spinning viscose
Assignee: EIDP Inc
•
Filing: 1946-03-22
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Granted: 1952-01-08
•
Expires: 1966-03-22
Abstract
No abstract record available.
Inventors
- 👤 Cox Norman Louis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:43
CPC Classifications
D; D01; D01F; D01F2/00; D01F2/06; D01F2/08; D01F2/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
35 words
A PROCESS WHICH COMPRISES INCORPORATING IN A FRESHLY FORMED VISCOSE A WATER-SOLUBLE TRITHIOCARBONATE IN EXCESS OF THAT FORMED IN THE PREPARATION OF SAID FRESHLY FORMED VISCOSE AND EXTRUDING RESULTANT UNRIPENED VISCOSE INTO A COAGULATING BATH.
Claim 2
Dependent Claim
35 words
A PROCESS WHICH COMPRISES INCORPORATING IN A FRESHLY FORMED VISCOSE A WATER-SOLUBLE TRITHIOCARBONATE IN EXCESS OF THAT FORMED IN THE PREPARATION OF SAID FRESHLY FORMED VISCOSE AND EXTRUDING RESULTANT UNRIPENED VISCOSE INTO A COAGULATING BATH.
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) | 1955-01-07 | 1955-07-09 | 1956-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-01-07 | 1959-07-09 | 1960-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-01-07 | 1963-07-09 | 1964-01-08 | $7700.00 | Window Closed / Lapsed |