US2740773A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of producing polymeric acrylonitrile materials
Assignee: Solutia Inc
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Filing: 1951-11-03
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Granted: 1956-04-03
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Expires: 1971-11-03
Abstract
No abstract record available.
Inventors
- 👤 George E Ham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:13
CPC Classifications
C; C08; C08F; C08F20/00; C08F20/02; C08F20/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
63 words
A PROCESS FOR PRODUCING A HEAT-STABLE, FIBER-FORMING POLYMERIC MATERIAL, WHICH PRODUCES FIBERS OF IMPROVED COLOR, WHICH COMPRISES POLYMERIZING A MATERIAL CONSISTING OF A NITRILE OF AN ALPHA-METHYLENE ALIPHATIC MONOCARBOXYLIC ACID, SAID ACID CONTAINING A TERMINAL METHYLENE GROUP, IN AN AQUEOUS MEDIUM IN THE PRESENCE OF 5 TO 50%, BASED/ON THE WEIGHT OF THE MATERIAL, OF A HALOGENATED ALKYL NITRILE HAVING THE GENERAL FORMULA
Claim 2
Dependent Claim
63 words
A PROCESS FOR PRODUCING A HEAT-STABLE, FIBER-FORMING POLYMERIC MATERIAL, WHICH PRODUCES FIBERS OF IMPROVED COLOR, WHICH COMPRISES POLYMERIZING A MATERIAL CONSISTING OF A NITRILE OF AN ALPHA-METHYLENE ALIPHATIC MONOCARBOXYLIC ACID, SAID ACID CONTAINING A TERMINAL METHYLENE GROUP, IN AN AQUEOUS MEDIUM IN THE PRESENCE OF 5 TO 50%, BASED/ON THE WEIGHT OF THE MATERIAL, OF A HALOGENATED ALKYL NITRILE HAVING THE GENERAL FORMULA
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) | 1959-04-03 | 1959-10-03 | 1960-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-03 | 1963-10-03 | 1964-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-03 | 1967-10-03 | 1968-04-03 | $7700.00 | Window Closed / Lapsed |