US3248466A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing two component crimpable regenerated cellulose fiber
Assignee: Beaunit Corp
•
Filing: 1962-10-15
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Granted: 1966-04-26
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Expires: 1982-10-15
Abstract
No abstract record available.
Inventors
- 👤 Woodell Rudolph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:04
CPC Classifications
D; D01; D01D; D01D4/00; D01D5/00; D01D5/253; D01D5/28; D01D5/30; D01D5/32; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2973
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
132 words
A PROCESS FOR PRODUCING INTEGRAL TWO COMPONENT RAYON FIBER IN WHICH THE EXTENDED LONG AXES OF THE SUBSTANTIALLY OVAL COMPONENTS INTERCEPT TO FORM A T WHICH COMPRISES ESSENTIALLY EXTRUDING SIMULTANEOUSLY IN SIDE-BYSIDE RELATIONSHIP THROUGH THE SAME SUBSTANTIALLY CIRCULAR SPINNERET HOLE A FIRST VISCOSE HAVING A SALT INDEX OF AT LEAST 5 AND CONTAINING FROM ABOUT 0.05% TO ABOUT 1% BY WEIGHT OF CYCLOHEXYLAMINE AS A COAGULATION MODIFIER, AND A SECOND VISCOSE HAVING A SALT INDEX OF AT LEAST 2 AND CONTAINING NO COAGULATION MODIFIER, INTO A COAGULATING AND REGENERATING BATH CONTAINING FROM ABOUT 6.5% TO ABOUT 10% SULFURIC ACID, FROM ABOUT 12% TO AOUT 32% SODIUM SULFATE, AT LEAST ABOUT 5% ZINC SULFATE, AND AT LEAST ABOUT 0.05% BY WEIGHT OF CYCLOHEXYLAMINE, AND STRETCHING THE YARN DURING THE COAGULATING AND REGENERATING STEP.
Claim 2
Dependent Claim
132 words
A PROCESS FOR PRODUCING INTEGRAL TWO COMPONENT RAYON FIBER IN WHICH THE EXTENDED LONG AXES OF THE SUBSTANTIALLY OVAL COMPONENTS INTERCEPT TO FORM A T WHICH COMPRISES ESSENTIALLY EXTRUDING SIMULTANEOUSLY IN SIDE-BYSIDE RELATIONSHIP THROUGH THE SAME SUBSTANTIALLY CIRCULAR SPINNERET HOLE A FIRST VISCOSE HAVING A SALT INDEX OF AT LEAST 5 AND CONTAINING FROM ABOUT 0.05% TO ABOUT 1% BY WEIGHT OF CYCLOHEXYLAMINE AS A COAGULATION MODIFIER, AND A SECOND VISCOSE HAVING A SALT INDEX OF AT LEAST 2 AND CONTAINING NO COAGULATION MODIFIER, INTO A COAGULATING AND REGENERATING BATH CONTAINING FROM ABOUT 6.5% TO ABOUT 10% SULFURIC ACID, FROM ABOUT 12% TO AOUT 32% SODIUM SULFATE, AT LEAST ABOUT 5% ZINC SULFATE, AND AT LEAST ABOUT 0.05% BY WEIGHT OF CYCLOHEXYLAMINE, AND STRETCHING THE YARN DURING THE COAGULATING AND REGENERATING STEP.
References Cited (Backward Citations)
GB514638A
Cited
US2439813A
Cited
US2428046A
Cited
US2535045A
Cited
US2535044A
Cited
US3112986A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-25 | 1969-10-25 | 1970-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-25 | 1973-10-25 | 1974-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-25 | 1977-10-25 | 1978-04-26 | $7700.00 | Window Closed / Lapsed |