US3071807A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spin bath
Assignee: Celanese Corp
•
Filing: 1959-10-26
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Granted: 1963-01-08
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Expires: 1979-10-26
Abstract
No abstract record available.
Inventors
- 👤 Kenneth C Laughlin
- 👤 Bruce B Allen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:08
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/06; D01F; D01F13/00; D01F13/02; Y; Y02; Y02P; Y02P70/00; Y02P70/50; Y02P70/62
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
58 words
THE PROCESS FOR THE REGENERATION OF FRESH COAGULANT BATH FROM SPENT COAGULANT BATH CONTAINING FILAMENTFORMING MATERIAL, A SOLVENT FOR THE FILAMENT-FORMING MATERIAL AND A NON-SOLVENT FOR THE FILAMENT-FORMING MATERIAL, WHICH COMPRISES CAUSING SAID SPENT COAGULANT BATH TO STRATIFY, WITHDRAWING A STRATUM RELATIVELY LOW IN FILAMENT-FORMING MATERIAL AND ADJUSTING THE COMPOSITION OF SAID STRATUM TO PRODUCE FRESH COAGULANT BATH.
Claim 2
Dependent Claim
58 words
THE PROCESS FOR THE REGENERATION OF FRESH COAGULANT BATH FROM SPENT COAGULANT BATH CONTAINING FILAMENTFORMING MATERIAL, A SOLVENT FOR THE FILAMENT-FORMING MATERIAL AND A NON-SOLVENT FOR THE FILAMENT-FORMING MATERIAL, WHICH COMPRISES CAUSING SAID SPENT COAGULANT BATH TO STRATIFY, WITHDRAWING A STRATUM RELATIVELY LOW IN FILAMENT-FORMING MATERIAL AND ADJUSTING THE COMPOSITION OF SAID STRATUM TO PRODUCE FRESH COAGULANT 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) | 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 |