Patent US2686103A successfully refreshed from Google Patents.
US2686103A
Expired / Lapsed
US
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Process of modifying regenerated cellulose and product resulting therefrom
Assignee: EIDP Inc
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Filing: 1950-05-24
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Granted: 1954-08-10
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Expires: 1970-05-24
Abstract
No abstract record available.
Inventors
- 👤 Charch William Hale
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:29
CPC Classifications
D; D01; D01F; D01F1/00; D01F1/02; D01F1/10
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
76 words
A PROCESS FOR MODIFYING REGENERATED CELLULOSE WHICH COMPRISES ADDING TO VISCOSE FROM ABOUT 5% TO ABOUT 50% BY WEIGHT BASED ON TOTAL SOLIDS OF A WATER-SOLUBLE SALT OF A POLYMERIC ACID COMPOUND DERIVED FROM AN ETHYLENE ALPHA, BETA DICARBOXYLIC ACID; SPINNING THE RESULTANT BLEND INTO A COAGULANT TO FORM A CELLULOSE/POLYMERIC ACID COMPOSITION; AND THEN CONVERTING SAID POLYMERIC ACID CONSTITUENT TO AN INSOLUBLE DERIVATIVE FROM THE GROUP CONSISTING OF AN ESTER, AN IMIDE AND AN AMIDE.
Claim 2
Dependent Claim
76 words
A PROCESS FOR MODIFYING REGENERATED CELLULOSE WHICH COMPRISES ADDING TO VISCOSE FROM ABOUT 5% TO ABOUT 50% BY WEIGHT BASED ON TOTAL SOLIDS OF A WATER-SOLUBLE SALT OF A POLYMERIC ACID COMPOUND DERIVED FROM AN ETHYLENE ALPHA, BETA DICARBOXYLIC ACID; SPINNING THE RESULTANT BLEND INTO A COAGULANT TO FORM A CELLULOSE/POLYMERIC ACID COMPOSITION; AND THEN CONVERTING SAID POLYMERIC ACID CONSTITUENT TO AN INSOLUBLE DERIVATIVE FROM THE GROUP CONSISTING OF AN ESTER, AN IMIDE AND AN AMIDE.
Claim 3
Dependent Claim
66 words
A MODIFIED CELLULOSE FUNICULAR BODY PRODUCED BY EXTRUSION OF A VISCOSE WHICH CONTAINS FROM ABOUT 5% TO 50% BY WEIGHT ON TOTAL SOLIDS OF A WATER-SOLUBLE SALT OF A POLYMERIC ACID COMPOUND DERIVED FROM AN ETHYLENE, ALPHA, BETA DICARBOXYLIC ACID INTO A COAGULATING BATH, FOLLOWED BY REGENERATION OF THE COAGULATED MODIFIED CELLULOSE AND CONVERSION OF THE POLYMERIC ETHYLENE, ALPHA, BETA DICARBOXYLIC COMPOUND TO AN INSOLUBLE FORM.
Claim 4
Dependent Claim
66 words
A MODIFIED CELLULOSE FUNICULAR BODY PRODUCED BY EXTRUSION OF A VISCOSE WHICH CONTAINS FROM ABOUT 5% TO 50% BY WEIGHT ON TOTAL SOLIDS OF A WATER-SOLUBLE SALT OF A POLYMERIC ACID COMPOUND DERIVED FROM AN ETHYLENE, ALPHA, BETA DICARBOXYLIC ACID INTO A COAGULATING BATH, FOLLOWED BY REGENERATION OF THE COAGULATED MODIFIED CELLULOSE AND CONVERSION OF THE POLYMERIC ETHYLENE, ALPHA, BETA DICARBOXYLIC COMPOUND TO AN INSOLUBLE FORM.
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) | 1957-08-09 | 1958-02-08 | 1958-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-09 | 1962-02-08 | 1962-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-09 | 1966-02-08 | 1966-08-10 | $7700.00 | Window Closed / Lapsed |