US2617784A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acrylonitrile polymers stabilized with a mixture of an aluminum salt and a maleic acid derivative
Assignee: Monsanto Chemicals Ltd
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Filing: 1950-10-26
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Granted: 1952-11-11
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Expires: 1970-10-26
Abstract
No abstract record available.
Inventors
- 👤 Robert J Slocombe
- 👤 George L Wesp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:05
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/09; C08K5/098
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
A STABLE POLYACRYLONITRILE POLYMER COMPRISING A POLYMER OF 20 PER CENT TO 100 PER CENT OF ACRYLONITRILE AND UP TO 80 PER CENT OF ANOTHER OLEFINIC MONOMER COPOLYMERIZABLE THEREWITH, SAID POLYMER CONTAINING INTIMATELY DISPERSED THEREIN FROM 0.01 TO FIVE PER CENT BY WEIGHT OF AN ALUMINUM SALT AND FROM 0.01 TO FIVE PER CENT BY WEIGHT OF A NON-ALUMINUM CONTAINING DERIVATIVE OF MALEIC ACID CONTAINING THE CIS-RADICAL
Claim 2
Dependent Claim
67 words
A STABLE POLYACRYLONITRILE POLYMER COMPRISING A POLYMER OF 20 PER CENT TO 100 PER CENT OF ACRYLONITRILE AND UP TO 80 PER CENT OF ANOTHER OLEFINIC MONOMER COPOLYMERIZABLE THEREWITH, SAID POLYMER CONTAINING INTIMATELY DISPERSED THEREIN FROM 0.01 TO FIVE PER CENT BY WEIGHT OF AN ALUMINUM SALT AND FROM 0.01 TO FIVE PER CENT BY WEIGHT OF A NON-ALUMINUM CONTAINING DERIVATIVE OF MALEIC ACID CONTAINING THE CIS-RADICAL
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-11-11 | 1956-05-12 | 1956-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-11-11 | 1960-05-12 | 1960-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-11-11 | 1964-05-12 | 1964-11-11 | $7700.00 | Window Closed / Lapsed |