US3194861A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Viscose spinning process and bath
Assignee: Beaunit Corp
•
Filing: 1957-03-25
•
Granted: 1965-07-13
•
Expires: 1977-03-25
Abstract
No abstract record available.
Inventors
- 👤 Rudolph S Bley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:58
CPC Classifications
D; D01; D01F; D01F2/00; D01F2/06; D01F2/08; D01F2/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
46 words
IN A PROCESS FOR PRODUCING REGENERATED CELLULOSE BY EXTRUDING VISCOSE INTO A HIGH ACID SPIN BATH, THE IMPROVEMENT WHICH COMPRISES EXTRUDING SAID VISCOSE INTO A SPIN BATH COMPRISING AN ACID SOLUTION OF STRENGTH SUFFICIENT TO PLASTICIZE REGENERATED CELLULOSE PRECIPITATED THEREIN, AND AN ALUMINUM COMPOUND DISSOLVED THEREIN.
Claim 2
Dependent Claim
46 words
IN A PROCESS FOR PRODUCING REGENERATED CELLULOSE BY EXTRUDING VISCOSE INTO A HIGH ACID SPIN BATH, THE IMPROVEMENT WHICH COMPRISES EXTRUDING SAID VISCOSE INTO A SPIN BATH COMPRISING AN ACID SOLUTION OF STRENGTH SUFFICIENT TO PLASTICIZE REGENERATED CELLULOSE PRECIPITATED THEREIN, AND AN ALUMINUM COMPOUND DISSOLVED THEREIN.
References Cited (Backward Citations)
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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) | 1968-07-12 | 1969-01-11 | 1969-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-12 | 1973-01-11 | 1973-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-12 | 1977-01-11 | 1977-07-13 | $7700.00 | Window Closed / Lapsed |