Patent US2723247A successfully refreshed from Google Patents.
US2723247A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ethylene oxamates and acrylonitrile polymer solutions in same
Assignee: Eastman Kodak Co
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Filing: 1951-10-30
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Granted: 1955-11-08
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Expires: 1971-10-30
Abstract
No abstract record available.
Inventors
- 👤 Jr Robert C Harrington
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:51
CPC Classifications
C; C07; C07D; C07D265/00; C07D265/28; C07D265/30; C07D265/32; C08; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/35
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
32 words
AS A NEW COMPOSITION OF MATTER, A POLYMER OF ACRYLONITRILE CONTAINING IN THE POLYMER MOLECULE AT LEAST A MAJOR PROPORTION BY WEIGHT OF ACRYLONITRILE, INCORPORATED WITH AN ETHYLENE OXAMATE HAVING THE FORMULA:
Claim 2
Dependent Claim
32 words
AS A NEW COMPOSITION OF MATTER, A POLYMER OF ACRYLONITRILE CONTAINING IN THE POLYMER MOLECULE AT LEAST A MAJOR PROPORTION BY WEIGHT OF ACRYLONITRILE, INCORPORATED WITH AN ETHYLENE OXAMATE HAVING THE FORMULA:
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) | 1958-11-07 | 1959-05-09 | 1959-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-11-07 | 1963-05-09 | 1963-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-11-07 | 1967-05-09 | 1967-11-08 | $7700.00 | Window Closed / Lapsed |