US2658879A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acrylonitrile polymers dissolved in solvent mixtures comprising nitromethane and water
Assignee: EIDP Inc
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Filing: 1948-08-19
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Granted: 1953-11-10
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Expires: 1968-08-19
Abstract
No abstract record available.
Inventors
- 👤 Beaman Ralph Gardner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:50
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: 2
Claim 1
Independent Claim
33 words
AS A NEW COMPOSITION OF MATTER, A POLYMER OF ACRYLONITRILE CONTAINING IN THE POLYMER MOLECULE AT LEAST 85% BY WEIGHT OF ACRYLONITRILE DISSOLVED IN A SOLVENT COMPRISING A MIXURE OF NITROMETHANE AND WATER.
Claim 2
Dependent Claim
33 words
AS A NEW COMPOSITION OF MATTER, A POLYMER OF ACRYLONITRILE CONTAINING IN THE POLYMER MOLECULE AT LEAST 85% BY WEIGHT OF ACRYLONITRILE DISSOLVED IN A SOLVENT COMPRISING A MIXURE OF NITROMETHANE AND WATER.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-09 | 1957-05-11 | 1957-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-09 | 1961-05-11 | 1961-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-09 | 1965-05-11 | 1965-11-10 | $7700.00 | Window Closed / Lapsed |