US2745841A
Expired / Lapsed
US
⏱️ 0.0 years remaining
The methylenebis derivative of nu-carbamylmaleimide
Assignee: Uniroyal Inc
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Filing: 1954-10-27
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Granted: 1956-05-15
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Expires: 1974-10-27
Abstract
No abstract record available.
Inventors
- 👤 Pliny O Tawney
- 👤 Robert J Kelly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:14
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: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-15 | 1959-11-14 | 1960-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-15 | 1963-11-14 | 1964-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-15 | 1967-11-14 | 1968-05-15 | $7700.00 | Window Closed / Lapsed |