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Patent US2813845A successfully refreshed from Google Patents.
US2813845A
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Stabilized acrylonitrile polymers
Assignee: Monsanto Chemicals Ltd
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Filing: 1953-06-12
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Granted: 1957-11-19
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Expires: 1973-06-12
Abstract
No abstract record available.
Inventors
- 👤 George L Wesp
- 👤 Robert J Slocombe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:55
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/28; C08K3/16; C08K3/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
A STABLE ACRYLONITRILE POLYMER COMPRISING A POLYMER OF 20 PERCENT TO 100 PERCENT OF ACRYLONITRILE AND UP TO 80 PERCENT OF ANOTHER MONOOLEFINIC MONOMER COPOLYMERIZED THEREWITH, SAID POLYMER CONTAINING INUMATELY DISPERSED THEREIN FROM 0.01 TO TEN PERCENT OF A MAGNESIUM SALT SELECTED FROM THE GROUP CONSISTING OF MAGNESIUM CHLORIDE, MAGNESIUM SULFATE AND MAGNESIUM NITRATE.
Claim 2
Dependent Claim
54 words
A STABLE ACRYLONITRILE POLYMER COMPRISING A POLYMER OF 20 PERCENT TO 100 PERCENT OF ACRYLONITRILE AND UP TO 80 PERCENT OF ANOTHER MONOOLEFINIC MONOMER COPOLYMERIZED THEREWITH, SAID POLYMER CONTAINING INUMATELY DISPERSED THEREIN FROM 0.01 TO TEN PERCENT OF A MAGNESIUM SALT SELECTED FROM THE GROUP CONSISTING OF MAGNESIUM CHLORIDE, MAGNESIUM SULFATE AND MAGNESIUM NITRATE.
References Cited (Backward Citations)
US2507142A
Cited
US2661345A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-11-18 | 1961-05-20 | 1961-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-18 | 1965-05-20 | 1965-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-18 | 1969-05-20 | 1969-11-19 | $7700.00 | Window Closed / Lapsed |