US2788349A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nu-carbamylimides
Assignee: Uniroyal Inc
•
Filing: 1953-07-09
•
Granted: 1957-04-09
•
Expires: 1973-07-09
Abstract
No abstract record available.
Inventors
- 👤 Robert H Snyder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:31
CPC Classifications
C; C07; C07D; C07D207/00; C07D207/02; C07D207/30; C07D207/34; C07D207/36; C07D207/40; C07D207/404
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
29 words
AN N-CARBAMYLIMIDE OF AN ALPHA-OLEFINIC DICARBOXYLIC ACID, SAID ACID HAVING FROM FOUR TO SIX CARBON ATOMS AND HAVING TWO CARBON ATOMS BETWEEN THE CARBOXYLIC GROUPS, THE CARBAMYL GROUP BEING
Claim 2
Dependent Claim
29 words
AN N-CARBAMYLIMIDE OF AN ALPHA-OLEFINIC DICARBOXYLIC ACID, SAID ACID HAVING FROM FOUR TO SIX CARBON ATOMS AND HAVING TWO CARBON ATOMS BETWEEN THE CARBOXYLIC GROUPS, THE CARBAMYL GROUP BEING
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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) | 1960-04-08 | 1960-10-08 | 1961-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-04-08 | 1964-10-08 | 1965-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-04-08 | 1968-10-08 | 1969-04-09 | $7700.00 | Window Closed / Lapsed |