US3116353A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spinning viscose
Assignee: Beaunit Corp
•
Filing: 1957-05-02
•
Granted: 1963-12-31
•
Expires: 1977-05-02
Abstract
No abstract record available.
Inventors
- 👤 Paul V Brower
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:51
CPC Classifications
D; D01; D01F; D01F2/00; D01F2/06; D01F2/08; D01F2/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
60 words
A PROCESS FOR THE PRODUCTION OF IMPROVED, CELLULOSIC PRODUCTS WHICH COMPRISES MODIFYING A VISCOSE BY ADDING THERETO A SOLUBLE-VISCOSE-COAGULATING SALT OF A STRONG BASE AND A WEAK ACID, AND EXTRUDING THE RESULTANT VISCOSE INTO AN ACID SPIN BATH IN THE PRESENCE OF A POLYALKYLENE GLYCOL HAVING AN AVERAGE MOLECULAR WEIGHT OF AT LEAST ABOUT 400 AND AN HYDROXY FATTY ACID.
Claim 2
Dependent Claim
60 words
A PROCESS FOR THE PRODUCTION OF IMPROVED, CELLULOSIC PRODUCTS WHICH COMPRISES MODIFYING A VISCOSE BY ADDING THERETO A SOLUBLE-VISCOSE-COAGULATING SALT OF A STRONG BASE AND A WEAK ACID, AND EXTRUDING THE RESULTANT VISCOSE INTO AN ACID SPIN BATH IN THE PRESENCE OF A POLYALKYLENE GLYCOL HAVING AN AVERAGE MOLECULAR WEIGHT OF AT LEAST ABOUT 400 AND AN HYDROXY FATTY ACID.
References Cited (Backward Citations)
US1102237A
Cited
US1955239A
Cited
US2011227A
Cited
US2064118A
Cited
US2648611A
Cited
US2593466A
Cited
US2705184A
Cited
US2696423A
Cited
GB741727A
Cited
US2732279A
Cited
GB763325A
Cited
US2897178A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-12-30 | 1967-07-01 | 1967-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-30 | 1971-07-01 | 1971-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-30 | 1975-07-01 | 1975-12-31 | $7700.00 | Window Closed / Lapsed |