US2966422A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low viscosity cellulose acetate spinning solutions
Assignee: Atlas Powder Co
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Filing: 1957-11-27
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Granted: 1960-12-27
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Expires: 1977-11-27
Abstract
No abstract record available.
Inventors
- 👤 John D Brandner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:09
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/36; C08K5/41; C08K5/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
51 words
A SPINNING SOLUTION COMPRISING CELLULOSE ACETATE, A SOLVENT FOR SAID ACETATE, AND FROM 0.5 TO ABOUT 2% BY WEIGHT, BASED ON THE WEIGHT OF SAID CELLULOSE ACETATE, OF A HIGHER ALKYL SUBSTITUTED BENZENE SULFONATE, SAID SULFONATE BEING SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL SULFONATES, AMMONIUM SULFONATES, AND AMINE SULFONATES.
Claim 2
Dependent Claim
51 words
A SPINNING SOLUTION COMPRISING CELLULOSE ACETATE, A SOLVENT FOR SAID ACETATE, AND FROM 0.5 TO ABOUT 2% BY WEIGHT, BASED ON THE WEIGHT OF SAID CELLULOSE ACETATE, OF A HIGHER ALKYL SUBSTITUTED BENZENE SULFONATE, SAID SULFONATE BEING SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL SULFONATES, AMMONIUM SULFONATES, AND AMINE SULFONATES.
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) | 1963-12-27 | 1964-06-27 | 1964-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-27 | 1968-06-27 | 1968-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-27 | 1972-06-27 | 1972-12-27 | $7700.00 | Window Closed / Lapsed |