US3883550A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Herbicides
Assignee: EIDP Inc
•
Filing: 1974-05-20
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Granted: 1975-05-13
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Expires: 1994-05-20
Abstract
Abstract Indazoles of the formula: D R A W I N G WHEREIN A IS CHLORINE, BROMINE OR METHYL, B IS CHLORINE, BROMINE OR METHYL, X is hydrogen or fluorine, and N IS 0 OR 1. Such compounds are useful as herbicides and in particular they are useful as selective herbicides for control of barnyard grass in rice and for control of crabgrass in turf. Exemplary of the compounds is 2H-indazole-3-carbonitrile-2(2,4,6-trimethylphenyl)-1-oxide.
Inventors
- 👤 Steven Jerome Goddard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:02
CPC Classifications
C; C07; C07D; C07D231/00; C07D231/54; C07D231/56; C07C; C07C255/00
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
5 words
A COMPOUND OF THE FORMULA:
Claim 2
Dependent Claim
5 words
A COMPOUND OF THE FORMULA:
Claim 3
Dependent Claim
24 words
The compound of claim 1 wherein a is methyl; b is chlorine, bromine, or methyl; X is hydrogen; and n is 0 or 1.
Claim 4
Dependent Claim
8 words
The compound of claim 1 which is 2H-indazole-3-carbonitrile-2-(2,4,6-trimethylphenyl)-1-oxide.
Claim 5
Dependent Claim
8 words
The compound of claim 1 which is 2H-indazole-3-carbonitrile-2-(2,4,6-trimethylphenyl).
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) | 1978-05-12 | 1978-11-11 | 1979-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-12 | 1982-11-11 | 1983-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-12 | 1986-11-11 | 1987-05-13 | $7700.00 | Window Closed / Lapsed |