Patent US3790631A successfully refreshed from Google Patents.
US3790631A
Expired / Lapsed
US
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Carbimidoyl ureas
Assignee: STWB Inc
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Filing: 1971-10-21
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Granted: 1974-02-05
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Expires: 1991-10-21
Abstract
Abstract THIS INVENTION RELATES TO CARBIMIODYL UREAS WHICH ARE PREPARED BY REACTING THE APPROPRIATE ISOCYANATES WITH THE APPROPRIATE AMIDINES. THE COMPOUNDS POSSES ANTHELMINTIC ACTIVITY.
Inventors
- 👤 G Diana
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:37
CPC Classifications
C; C07; C07D; C07D277/00; C07D277/02; C07D277/20; C07D277/32; C07D277/56; C07C; C07C273/00; C07C273/18; C07C273/1809; C07C273/1818; C07C273/1827; C07C275/00; C07C275/46; C07C275/48; C07C275/56; C07D333/00; C07D333/02; C07D333/04; C07D333/26; C07D333/38
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) | 1977-02-04 | 1977-08-06 | 1978-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-04 | 1981-08-06 | 1982-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-04 | 1985-08-06 | 1986-02-05 | $7700.00 | Window Closed / Lapsed |