US2536094A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for spinning artificial fibers
Assignee: Akzo Nobel UK PLC
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Filing: 1949-09-17
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Granted: 1951-01-02
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Expires: 1969-09-17
Abstract
No abstract record available.
Inventors
- 👤 Henry J Mcdermott
- 👤 Pedlow John Watson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:09
CPC Classifications
F; F02; F02K; F02K1/00; F02K1/04; D; D01; D01D; D01D5/00; D01D5/06; D01D5/12; D01D5/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
THE METHOD OF PRODUCING ARTIFICIAL FILAMENTS COMPRISING CONTINUOUSLY EXTRUDING VISCOSE HAVING A TEMPERATURE OF 35* C. TO 60* C. THROUGH THE ORIFICES OF A SPINNERET INTO AN ACID REGENERATING AND COAGULATING LIQUID HAVING A TEMPERATURE BETWEEN 40* C. AND 70* C., SAID EXTRUSION BEING PERFORMED UNDER CONDITIONS OF JET STRETCH BETWEEN 0.2 AND 1.25, DIRECTING THE FILAMENT-FORMING STREAMS IN A STRAIGHT PATH AS THEY PROCEED FROM THE SPINNERET AND ARE COAGULATED TO FILAMENTS IN THE COAGULATING LIQUID, IMPARTING A PREDETERMINED CONSTANT VELOCITY TO THE FILAMENTS AS THEY PROCEED IN SAID STRAIGHT PATH, FORMING THE COAGULATING LIQUID AT A POINT NOT OVER 5 CM. FROM THE SPINNERET FACE INTO A STREAM HAVING SUBSTANTIALLY THE SAME VELOCITY AS THE FILAMENTS AND FLOW-
Claim 2
Independent Claim
120 words
THE METHOD OF PRODUCING ARTIFICIAL FILAMENTS COMPRISING CONTINUOUSLY EXTRUDING VISCOSE HAVING A TEMPERATURE OF 35* C. TO 60* C. THROUGH THE ORIFICES OF A SPINNERET INTO AN ACID REGENERATING AND COAGULATING LIQUID HAVING A TEMPERATURE BETWEEN 40* C. AND 70* C., SAID EXTRUSION BEING PERFORMED UNDER CONDITIONS OF JET STRETCH BETWEEN 0.2 AND 1.25, DIRECTING THE FILAMENT-FORMING STREAMS IN A STRAIGHT PATH AS THEY PROCEED FROM THE SPINNERET AND ARE COAGULATED TO FILAMENTS IN THE COAGULATING LIQUID, IMPARTING A PREDETERMINED CONSTANT VELOCITY TO THE FILAMENTS AS THEY PROCEED IN SAID STRAIGHT PATH, FORMING THE COAGULATING LIQUID AT A POINT NOT OVER 5 CM. FROM THE SPINNERET FACE INTO A STREAM HAVING SUBSTANTIALLY THE SAME VELOCITY AS THE FILAMENTS AND FLOW-
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) | 1954-01-01 | 1954-07-03 | 1955-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-01 | 1958-07-03 | 1959-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-01 | 1962-07-03 | 1963-01-02 | $7700.00 | Window Closed / Lapsed |