US2583327A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copolymer of acrylonitrile and an ethylenic dicarboxylic acid monoester of a cyanoalchol
Assignee: Beazer East Inc
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Filing: 1949-02-25
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Granted: 1952-01-22
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Expires: 1969-02-25
Abstract
No abstract record available.
Inventors
- 👤 Alelio Gaetano F D
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:15
CPC Classifications
C; C08; C08F; C08F220/00; C08F220/02; C08F220/42; C08F220/44
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
A POLYMERIC ACRYLONITRILE CONTAINING IN THE POLYMER MOLECULE AT LEAST ABOUT 50 PERCENT BY WEIGHT OF ACRYLONITRILE AND ABOUT 0.5-30 PERCENT BY WEIGHT OF AN ETHYLENE ALPHA, BETA-DICARBOXYLIC ACID MONOESTER OF CYANOALCOHOL, SAID DICARBOXYLIC ACID MONESTER BEING PREPARED FROM AN ACID OF THE CLASS CONSISTING OF ITACONIC, MALEIC, FUMARIC, CITRACONIC, AND ACONITIC ACIDS AND A CYANOALCOHOL HAVING THE FORMULA HO-Z-CN WHEREIN Z IS A DIVALENT ALKYL RADICAL OF LESS THAN 5 CARBON ATOMS.
Claim 2
Dependent Claim
73 words
A POLYMERIC ACRYLONITRILE CONTAINING IN THE POLYMER MOLECULE AT LEAST ABOUT 50 PERCENT BY WEIGHT OF ACRYLONITRILE AND ABOUT 0.5-30 PERCENT BY WEIGHT OF AN ETHYLENE ALPHA, BETA-DICARBOXYLIC ACID MONOESTER OF CYANOALCOHOL, SAID DICARBOXYLIC ACID MONESTER BEING PREPARED FROM AN ACID OF THE CLASS CONSISTING OF ITACONIC, MALEIC, FUMARIC, CITRACONIC, AND ACONITIC ACIDS AND A CYANOALCOHOL HAVING THE FORMULA HO-Z-CN WHEREIN Z IS A DIVALENT ALKYL RADICAL OF LESS THAN 5 CARBON ATOMS.
References Cited (Backward Citations)
US2379297A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-01-21 | 1955-07-23 | 1956-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-01-21 | 1959-07-23 | 1960-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-01-21 | 1963-07-23 | 1964-01-22 | $7700.00 | Window Closed / Lapsed |