US2822574A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and means for spinning a banded filament
Assignee: Akzo Nobel UK PLC
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Filing: 1956-04-17
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Granted: 1958-02-11
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Expires: 1976-04-17
Abstract
No abstract record available.
Inventors
- 👤 Francis L Lavash
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:10
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/28; Y; Y10; Y10S; Y10S425/00; Y10S425/131; Y10S425/217
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
103 words
APPARATUS FOR PRODUCING REGENERATED CELLULOSE FILAMENTS OF UNIFORM CROSS-SECTION BUT HAVING BANDS OF CONTRASTING COLORS AT SELECTED INTERVALS ALONG ITS LENGTH COMPRISING A SPINNERET, A CENTRAL CONDUIT CONNECTED TO SAID SPINNERET, MEANS FOR SUPPLYING A CONTINUOUS STREAM OF PLAIN VISCOSE TO SAID CENTRAL CONDUIT FOR EXTRUSION THROUGH SAID SPINNERET, AUCILIARY MEANS FOR ADDING INCREMENTS OF COLORED VISCOSE TO SAID CENTRAL CONDUIT, A RETURN CONDUIT FOR WITHDRAWING A SIDE STREAM OF PLAIN VISCOSE FROM SAID CENTRAL CONDUIT AT A POINT UPSTREAM FROM THE POINT OF COLORED VISCOSE INJECTION AND IN AN AMOUNT EQUAL TO THAT ADDED THROUGH SAID AUXILIARY MEANS, A RESTRICTION IN SAID
References Cited (Backward Citations)
US2136201A
Cited
US2650168A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-02-10 | 1961-08-12 | 1962-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-10 | 1965-08-12 | 1966-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-10 | 1969-08-12 | 1970-02-11 | $7700.00 | Window Closed / Lapsed |