US3071806A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wet spinning column and process
Assignee: Celanese Corp
•
Filing: 1958-01-29
•
Granted: 1963-01-08
•
Expires: 1978-01-29
Abstract
No abstract record available.
Inventors
- 👤 Arnold J Rosenthal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:45
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/06; D01F; D01F2/00; D01F2/24; D01F2/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
144 words
AN APPARATUS FOR WET-SPINNING A SOLUTION OF A FILAMENT-FORMING MATERIAL, COMPRISING AN UPWARDLY DIRECTED SPINNERETTE, MEANS FOR SUPPLYING A SPINNING SOLUTION TO SAID SPINNERETTE, A VERTICAL SPINNING COLUMN, A PAIR OF PIPE MEANS COMMUNICATING WITH THE ENDS OF SAID COLUMN TO SUPPLY TO AND WITHDRAW A SPIN BATH THEREFROM, MEANS FOR POSITIVELY PUMPING SPIN BATH TO SAID COLUMN, SAID COLUMN BEING SUBDIVIDED INTO A ZONE OF SMALLER CROSSSECTIONAL AREA COMMENCING AT A MAXIMUM DISTANCE OF 20 CM. FROM THE FACE OF THE SPINNERETTE FOLLOWED BY A ZONE OF GREATER CROSS-SECTIONAL AREA MORE REMOTE FROM SAID SPINNERETTE, THEREBY TO CAUSE THE SPIN BATH TO TRAVEL THROUGH SAID ZONE OF SMALLER AREA AT A HIGHER LINEAR SPEED THAN THROUGH SAID ZONE OF GREATER AREA, SAID ZONE OF SMALLER AREA HAVING A MAXIMUM LENGTH OF ABOUT 40 CM. AND MEANS FOR WITHDRAWING FILAMENTARY MATERIAL FROM SAID COLUMN.
Claim 2
Independent Claim
144 words
AN APPARATUS FOR WET-SPINNING A SOLUTION OF A FILAMENT-FORMING MATERIAL, COMPRISING AN UPWARDLY DIRECTED SPINNERETTE, MEANS FOR SUPPLYING A SPINNING SOLUTION TO SAID SPINNERETTE, A VERTICAL SPINNING COLUMN, A PAIR OF PIPE MEANS COMMUNICATING WITH THE ENDS OF SAID COLUMN TO SUPPLY TO AND WITHDRAW A SPIN BATH THEREFROM, MEANS FOR POSITIVELY PUMPING SPIN BATH TO SAID COLUMN, SAID COLUMN BEING SUBDIVIDED INTO A ZONE OF SMALLER CROSSSECTIONAL AREA COMMENCING AT A MAXIMUM DISTANCE OF 20 CM. FROM THE FACE OF THE SPINNERETTE FOLLOWED BY A ZONE OF GREATER CROSS-SECTIONAL AREA MORE REMOTE FROM SAID SPINNERETTE, THEREBY TO CAUSE THE SPIN BATH TO TRAVEL THROUGH SAID ZONE OF SMALLER AREA AT A HIGHER LINEAR SPEED THAN THROUGH SAID ZONE OF GREATER AREA, SAID ZONE OF SMALLER AREA HAVING A MAXIMUM LENGTH OF ABOUT 40 CM. AND MEANS FOR WITHDRAWING FILAMENTARY MATERIAL FROM SAID COLUMN.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-01-07 | 1966-07-09 | 1967-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-07 | 1970-07-09 | 1971-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-07 | 1974-07-09 | 1975-01-08 | $7700.00 | Window Closed / Lapsed |