Patent US2683128A successfully refreshed from Google Patents.
US2683128A
Expired / Lapsed
US
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Polymeric compositions
Assignee: Beazer East Inc
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Filing: 1950-09-29
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Granted: 1954-07-06
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Expires: 1970-09-29
Abstract
No abstract record available.
Inventors
- 👤 Alelio Gaetano F D
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:44
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/21
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
26 words
A COMPOSITION OF MATTER COMPRISING POLYMERIC ACRYLONITRILE CONTAINING IN THE POLYMER MOLECULE AT LEAST 80% BY WEIGHT OF ACRYLONITRILE, AND A SUBSTITUTED UREA OF THE FORMULA
Claim 2
Dependent Claim
26 words
A COMPOSITION OF MATTER COMPRISING POLYMERIC ACRYLONITRILE CONTAINING IN THE POLYMER MOLECULE AT LEAST 80% BY WEIGHT OF ACRYLONITRILE, AND A SUBSTITUTED UREA OF 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) | 1957-07-05 | 1958-01-04 | 1958-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-07-05 | 1962-01-04 | 1962-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-07-05 | 1966-01-04 | 1966-07-06 | $7700.00 | Window Closed / Lapsed |