US2792380A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acrylonitrile polymers stabilized with salts of fumaric acid
Assignee: Monsanto Chemicals Ltd
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Filing: 1954-06-14
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Granted: 1957-05-14
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Expires: 1974-06-14
Abstract
No abstract record available.
Inventors
- 👤 Robert J Slocombe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:36
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/36; C08K5/41; C08K5/42; C08K5/04; C08K5/09; C08K5/098; C08K5/49; C08K5/51; C08K5/53; C08K5/5317
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
57 words
A STABLE ACRYLONITRILE POLYMER COMPRISING A POLYMER OF 20% TO 100% OF ACRYLONITRILE AND FROM UP TO 80% OF ANOTHER MONOOLEFINIC MONOMER COPOLYMERIZED THEREWITH, SAID POLYMER CONTAINING IMTIMATELY DISPERSED THEREIN FROM 0.01% TO 10% OF A SALT OF FUMARIC ACID SELECTED FROM THE GROUP CONSISTING OF CALCIUM FUMARATE, MAGNESIUM FUMARATE, STRONITIUM FUMARATE, ALUMINUM FUMARATE AND SODIUM FUMARATE.
Claim 2
Dependent Claim
57 words
A STABLE ACRYLONITRILE POLYMER COMPRISING A POLYMER OF 20% TO 100% OF ACRYLONITRILE AND FROM UP TO 80% OF ANOTHER MONOOLEFINIC MONOMER COPOLYMERIZED THEREWITH, SAID POLYMER CONTAINING IMTIMATELY DISPERSED THEREIN FROM 0.01% TO 10% OF A SALT OF FUMARIC ACID SELECTED FROM THE GROUP CONSISTING OF CALCIUM FUMARATE, MAGNESIUM FUMARATE, STRONITIUM FUMARATE, ALUMINUM FUMARATE AND SODIUM FUMARATE.
References Cited (Backward Citations)
US2661345A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-05-13 | 1960-11-12 | 1961-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-05-13 | 1964-11-12 | 1965-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-05-13 | 1968-11-12 | 1969-05-14 | $7700.00 | Window Closed / Lapsed |