US3741977A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Substituted 3-(4-ureidophenyl)-1,3,4-oxadiazol-2-ones
Assignee: Rhone Poulenc SA
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Filing: 1971-01-14
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Granted: 1973-06-26
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Expires: 1991-01-14
Abstract
Abstract THE NEW OXADIAZOLINE DERIVATIVES OF THE FORMULA: 1-(2-(O=),5-R-2,3-DIHYDRO-1,3,4-OXADIAZOL-3-YL),2-R1,4- (R2-N(-R3)-CO-N(-R4)-)BENZENE (WHEREIN R REPRESENTS ALKYL OR PHEYL, OR PHENYL CARRYING AT LEAST ONE SUBSTITUENT SELECTED FROM HALOGEN, ALKYL AND ALKOXY, R1 REPRESENTS HYDROGEN, HALOGEN, ALKYL, ALKOXY, NITRO OR TRIFLUOROMETHYL, R2 REPRESENTS HYDROGEN, ALKYL, ALKENYL, ALKYNYL, ALKOXY OR ALKENYLOXY, R3 REPRESENTS HYDROGEN OR ALKYL, AND R4 REPRESENTS HYDROGEN OR ALKYL, THE ALKYL AND ALKOXY RADICALS CONTAINING 1 TO 4 CARBON ATOMS, AND THE ALKENYL, ALKYNYL AND ALKENYLOXY RADICALS CONTAINING 2 TO 4 CARBON ATOMS) ARE USEFUL AS HERBICIDES AGAINST MONOCOTYLEDONS AND DICOTYLEDONS.
Inventors
- 👤 R Boesch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:09
CPC Classifications
C; C07; C07D; C07D271/00; C07D271/02; C07D271/10; C07D271/113
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) | 1976-06-25 | 1976-12-25 | 1977-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-25 | 1980-12-25 | 1981-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-25 | 1984-12-25 | 1985-06-26 | $7700.00 | Window Closed / Lapsed |