US2512968A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of cellulosic articles
Assignee: EIDP Inc
•
Filing: 1946-04-10
•
Granted: 1950-06-27
•
Expires: 1966-04-10
Abstract
No abstract record available.
Inventors
- 👤 Jr Linton G Ray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:13
CPC Classifications
D; D01; D01F; D01F2/00; D01F2/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
IN THE PROCESS FOR THE PRODUCTION OF A REGENERATED CELLULOSE STRUCTURE WHICH COMPRISES EXTRUDING VISCOSE INTO A COAGULATING BATH WHICH WILL PRECIPITATE THE CELLULOSE XANTHATE WITHOUT SUBSTANTIALLY CONVERTING IT TO REGENERATED CELLULOSE, DRAWING SAID STRUCTURE FROM SAID BATH, STRETCHING SAID STRUCTURE AND REGENERATING THE SAME TO REGENERATED CELULOSE, THE IMPROVEMENT WHICH COMPRISES THE STEP OF SWELLING THE STRUCTURE SUBSEQUENT TO STRETCHING IN THE PRESENCE OF AN AQUEOUS SOLUTION OF A WATER-SOLUBLE SALT WHICH IS A COAGU-
Claim 2
Dependent Claim
76 words
IN THE PROCESS FOR THE PRODUCTION OF A REGENERATED CELLULOSE STRUCTURE WHICH COMPRISES EXTRUDING VISCOSE INTO A COAGULATING BATH WHICH WILL PRECIPITATE THE CELLULOSE XANTHATE WITHOUT SUBSTANTIALLY CONVERTING IT TO REGENERATED CELLULOSE, DRAWING SAID STRUCTURE FROM SAID BATH, STRETCHING SAID STRUCTURE AND REGENERATING THE SAME TO REGENERATED CELULOSE, THE IMPROVEMENT WHICH COMPRISES THE STEP OF SWELLING THE STRUCTURE SUBSEQUENT TO STRETCHING IN THE PRESENCE OF AN AQUEOUS SOLUTION OF A WATER-SOLUBLE SALT WHICH IS A COAGU-
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) | 1953-06-26 | 1953-12-26 | 1954-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-06-26 | 1957-12-26 | 1958-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-06-26 | 1961-12-26 | 1962-06-27 | $7700.00 | Window Closed / Lapsed |