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US2999085A
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US
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Copolymers of monoallyldialkyl phosphates and acrylonitrile
Assignee: Acordis UK Ltd
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Filing: 1958-01-27
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Granted: 1961-09-05
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Expires: 1978-01-27
Abstract
No abstract record available.
Inventors
- 👤 King Frederick Ernest
- 👤 Cooke Victor Francis George
- 👤 Lincoln James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:16
CPC Classifications
C; C08; C08F; C08F30/00; C08F30/02; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/08; C07F9/09; C07F9/113; C07F9/28; C07F9/38; C07F9/40; C07F9/4003; C07F9/4006; C08F220/00; C08F220/02; C08F220/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
A COPOLYMER OF ACRYLONITRILE AND A MONOMER OF THE FORMULA R''1-NP(O)(OR)2(3R'')N WHERE R IS A MEMBER SELECTED FROM THE GROUP CONSISTING OF 2-CHLORETHYL AND 2-BROMETHYL, R'' IS SELECTED FROM THE GROUP CONSISTING OF ALLYL AND METHALLYL AND N IS SELECTED FROM THE GROUP CONSISTING OF 1 AND 0, THE PROPORTION OF COMBINED PHOSPHORUS IN SAID COPOLYMER RANGING FROM ABOUT 2 TO 10% BY WEIGHT.
Claim 2
Dependent Claim
64 words
A COPOLYMER OF ACRYLONITRILE AND A MONOMER OF THE FORMULA R''1-NP(O)(OR)2(3R'')N WHERE R IS A MEMBER SELECTED FROM THE GROUP CONSISTING OF 2-CHLORETHYL AND 2-BROMETHYL, R'' IS SELECTED FROM THE GROUP CONSISTING OF ALLYL AND METHALLYL AND N IS SELECTED FROM THE GROUP CONSISTING OF 1 AND 0, THE PROPORTION OF COMBINED PHOSPHORUS IN SAID COPOLYMER RANGING FROM ABOUT 2 TO 10% BY WEIGHT.
References Cited (Backward Citations)
US2439214A
Cited
US2636027A
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US2631162A
Cited
US2714100A
Cited
US2743261A
Cited
US2827475A
Cited
US2791574A
Cited
US2854434A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-09-04 | 1965-03-06 | 1965-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-04 | 1969-03-06 | 1969-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-04 | 1973-03-06 | 1973-09-05 | $7700.00 | Window Closed / Lapsed |