US2531407A
Expired / Lapsed
US
⏱️ 0.0 years remaining
N,n-dimethyl acetamide-containing compositions
Assignee: Industrial Rayon Corp
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Filing: 1946-10-25
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Granted: 1950-11-28
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Expires: 1966-10-25
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 08:17
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/02; C08J3/09; C08J3/091; C08J3/096; C08J2333/00; C08J2333/18; C08J2333/20
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
30 words
A COMPOSITION OF MATTER COMPRISING N,NDIMETHYL ACETAMIDE SUBSTANTIALLY FREE FROM ACETIC ACID AND A POLYMER OF ACRYLONITRILE CONTAINING IN THE POLYMER MOLECULE AT LEAST 50 PERCENT BY WEIGHT OF ACRYLONITRILE.
References Cited (Backward Citations)
US2346208A
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US2325060A
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US2404717A
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US2404714A
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US2420565A
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US2404713A
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US2405008A
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US2404724A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-11-27 | 1954-05-29 | 1954-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-27 | 1958-05-29 | 1958-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-27 | 1962-05-29 | 1962-11-28 | $7700.00 | Window Closed / Lapsed |