Patent US3700678A successfully refreshed from Google Patents.
US3700678A
Expired / Lapsed
US
⏱️ 0.0 years remaining
1-picolyl-3-phenyl ureas
Assignee: Zeneca Inc
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Filing: 1971-04-30
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Granted: 1972-10-24
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Expires: 1991-04-30
Abstract
Abstract Compounds of the formula IN WHICH X is nitro, methyl or trifluoromethyl, and n is an integer 1 or 2. The utility as post and pre-emergence herbicides of the compounds of the formula IN WHICH X is hydrogen, halogen, nitro, methyl, and trifluoromethyl, and n is an integer 1 or 2.
Inventors
- 👤 Alexander Mihailovski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:32
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/24; C07D213/36; C07D213/40; A; A01; A01N; A01N47/00; A01N47/08; A01N47/28; A01N47/30
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
20 words
A compound according to claim 1 in which the pyridyl ring substitution is in the 2-position and Xn is 3nitro.
Claim 2
Dependent Claim
20 words
A compound according to claim 1 in which the pyridyl ring substitution is in the 2-position and Xn is trifluoromethyl.
Claim 3
Dependent Claim
20 words
A compound according to claim 1 in which the pyridyl ring substitution is in the 2-position and Xn is 4-methyl.
References Cited (Backward Citations)
US3128280A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-24 | 1976-04-24 | 1976-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-24 | 1980-04-24 | 1980-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-24 | 1984-04-24 | 1984-10-24 | $7700.00 | Window Closed / Lapsed |