US3947437A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Substituted pyridazinyloxy(thio)phenyl ureas and derivatives thereof
Assignee: Dow Chemical Co
•
Filing: 1974-01-22
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Granted: 1976-03-30
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Expires: 1994-01-22
Abstract
Abstract Disclosed are novel substituted pyridazinyloxy(thio)phenyl ureas and derivatives thereof. The compounds of the instant invention are useful as herbicides and can be formulated to provide herbicidal compositions.
Inventors
- 👤 Howard Johnston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:19
CPC Classifications
C; C07; C07D; C07D237/00; C07D237/02; C07D237/06; C07D237/10; C07D237/18; C07D237/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
1 words
N'-(4-((6-chloro-3-pyrazinyl)oxy)phenyl)-N,N-dimethylurea.
Claim 2
Dependent Claim
1 words
N'-(4-((6-chloro-3-pyrazinyl)oxy)phenyl)-N,N-dimethylurea.
References Cited (Backward Citations)
US3350193A
Cited
NL6505224A
Cited
US3427146A
Cited
US3520886A
Cited
US3652257A
Cited
US3806509A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-03-30 | 1979-09-29 | 1980-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-30 | 1983-09-29 | 1984-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-30 | 1987-09-29 | 1988-03-30 | $7700.00 | Window Closed / Lapsed |