Patent US2686774A successfully refreshed from Google Patents.
US2686774A
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Polymers and copolymers of nu-(dialkylamino aryl) imide of maleic and citraconic acids
Assignee: Beazer East Inc
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Filing: 1951-08-31
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Granted: 1954-08-17
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Expires: 1971-08-31
Abstract
No abstract record available.
Inventors
- 👤 Alelio Gaetano F D
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 05:07
CPC Classifications
C; C07; C07D; C07D207/00; C07D207/02; C07D207/44; C07D207/444; C07D207/448; C07D207/452; C08; C08F; C08F22/00; C08F22/36
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
63 words
THE POLYMERIZATION PRODUCT OBTAINED BY POLYMERIZING A MASS COMPRISING A POLYMERIZABLE MONOMER HAVING A CH2=C< GROUP AND AN N(DIALKYLAMINO ARYL) IMIDE OF AN ACID SELECTED FROM THE CLASS CONSISTING OF MALEIC AND CITRACONIC ACIDS IN WHICH THE ALKYL GROUPS CONTAIN NOT MORE THAN 10 CARBON ATOMS EACH AND THE ARYL GROUP IS CHOSEN FROM THE CLASS CONSISTING OF THE PHENYLENE AND NAPHTHYLENE RADICALS.
Claim 2
Dependent Claim
63 words
THE POLYMERIZATION PRODUCT OBTAINED BY POLYMERIZING A MASS COMPRISING A POLYMERIZABLE MONOMER HAVING A CH2=C< GROUP AND AN N(DIALKYLAMINO ARYL) IMIDE OF AN ACID SELECTED FROM THE CLASS CONSISTING OF MALEIC AND CITRACONIC ACIDS IN WHICH THE ALKYL GROUPS CONTAIN NOT MORE THAN 10 CARBON ATOMS EACH AND THE ARYL GROUP IS CHOSEN FROM THE CLASS CONSISTING OF THE PHENYLENE AND NAPHTHYLENE RADICALS.
References Cited (Backward Citations)
US2313565A
Cited
US2508860A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-08-16 | 1958-02-15 | 1958-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-16 | 1962-02-15 | 1962-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-16 | 1966-02-15 | 1966-08-17 | $7700.00 | Window Closed / Lapsed |