Patent US3114747A successfully refreshed from Google Patents.
US3114747A
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Process for producing a fibrous regenerated cellulose precipitate
Assignee: EIDP Inc
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Filing: 1959-03-26
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Granted: 1963-12-17
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Expires: 1979-03-26
Abstract
No abstract record available.
Inventors
- 👤 Parrish Esperanza
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:57
CPC Classifications
D; D21; D21H; D21H13/00; D21H13/02; D21H13/08; D01; D01F; D01F2/00; D01F2/06; D01F2/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
A PROCESS FOR PRODUCING A FIBROUS REGENERATED CELLULOSE PRECIPITATE,WHICH COMPRISES PREPARING AN AQUEOUS ALKALINE SOLUTION OF CELLULOSE XANTHATE ANALYING 0.5% TO 20% CELLULOSE AND AT LEAST 0.2% SODIUM HYDROXIDE, HAVING A SALT INDEX ABOVE 2.0 AND HAVING A A VISCOSITY OF 1 TO 150 POISES, MIXING THE SOLUTION UNDER CONDITIONS OF SHEAR WITH A COAGULATING BATH AND REGENERATING THE CELLULOSE, THE MIXING BEING CONDUCTED AT A RATE O F SHEAR AND COAGULATION TO PROVIDE A VALUE OF R''5 BETWEEN ABOUT 1 AND 1030.
Claim 2
Dependent Claim
83 words
A PROCESS FOR PRODUCING A FIBROUS REGENERATED CELLULOSE PRECIPITATE,WHICH COMPRISES PREPARING AN AQUEOUS ALKALINE SOLUTION OF CELLULOSE XANTHATE ANALYING 0.5% TO 20% CELLULOSE AND AT LEAST 0.2% SODIUM HYDROXIDE, HAVING A SALT INDEX ABOVE 2.0 AND HAVING A A VISCOSITY OF 1 TO 150 POISES, MIXING THE SOLUTION UNDER CONDITIONS OF SHEAR WITH A COAGULATING BATH AND REGENERATING THE CELLULOSE, THE MIXING BEING CONDUCTED AT A RATE O F SHEAR AND COAGULATION TO PROVIDE A VALUE OF R''5 BETWEEN ABOUT 1 AND 1030.
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) | 1966-12-16 | 1967-06-17 | 1967-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-16 | 1971-06-17 | 1971-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-16 | 1975-06-17 | 1975-12-17 | $7700.00 | Window Closed / Lapsed |