US2922693A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acrylonitrile-vinyl lactam polymer blend textiles light stabilized by treatment withhydroxyl ammonium sulfate and sulfuric acid and products produced thereby
Assignee: Dow Chemical Co
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Filing: 1956-12-28
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Granted: 1960-01-26
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Expires: 1976-12-28
Abstract
No abstract record available.
Inventors
- 👤 Albert S Messer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:13
CPC Classifications
C; C08; C08L; C08L33/00; C08L33/18; C08L33/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
THE IMPROVEMENT IN THE TEXTILE ART FOR TREATING A SYNTHETIC TEXTILE FIBER OF A POLYMER BLEND COMPOSITION OF (1) AT LEAST ABOUT 80 NWEIGHT PERCENT, BASED ON THE WEIGHT OF THE DRY FIBER, OF (A) A FIBER-FORMING ACRYLONITRILE POLYMER THAT CONTAINS IN THE POLYMER MOLECULE AT LEAST ABOUT 85 WEIGHT PERCENT OF POLYMERIZED ACRYLONITRILE IN AN INTIMATE BLENDED MIXTURE WITH (2) A MINOR PROPORTION OF UP TO ABOUT 20 WEIGHT PERCENT, BASED ON THE WEIGHT OF THE DRY FIBER, OF (B) A DYE ASSISTING VINYL LACTAM POLYMER THAT CONTAINS IN THE POLYMER AT LEAST ABOUT 60 WEIGHT PERCENT OF POLYMERIZED VINYL LACTAM
Claim 2
Dependent Claim
102 words
THE IMPROVEMENT IN THE TEXTILE ART FOR TREATING A SYNTHETIC TEXTILE FIBER OF A POLYMER BLEND COMPOSITION OF (1) AT LEAST ABOUT 80 NWEIGHT PERCENT, BASED ON THE WEIGHT OF THE DRY FIBER, OF (A) A FIBER-FORMING ACRYLONITRILE POLYMER THAT CONTAINS IN THE POLYMER MOLECULE AT LEAST ABOUT 85 WEIGHT PERCENT OF POLYMERIZED ACRYLONITRILE IN AN INTIMATE BLENDED MIXTURE WITH (2) A MINOR PROPORTION OF UP TO ABOUT 20 WEIGHT PERCENT, BASED ON THE WEIGHT OF THE DRY FIBER, OF (B) A DYE ASSISTING VINYL LACTAM POLYMER THAT CONTAINS IN THE POLYMER AT LEAST ABOUT 60 WEIGHT PERCENT OF POLYMERIZED VINYL LACTAM
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) | 1963-01-25 | 1963-07-27 | 1964-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-25 | 1967-07-27 | 1968-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-25 | 1971-07-27 | 1972-01-26 | $7700.00 | Window Closed / Lapsed |