US3979437A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Substituted phenoxybenzoic acids and derivatives thereof
Assignee: Bayer CropScience SA
•
Filing: 1975-09-29
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Granted: 1976-09-07
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Expires: 1995-09-29
Abstract
Abstract 2-Nitro-5-(substituted-phenoxy)benzoic acids and esters, salts, amides, and acyl halides thereof comprise a class of compounds that are highly effective herbicides.
Inventors
- 👤 Robert J. Theissen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:45
CPC Classifications
C; C07; C07C; C07C205/00; C07C205/49; C07C205/57; C07C205/59
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
40 words
A compound having the formula: ##SPC2## R is hydroxy, alkoxy of 1 to 4 carbon atoms, or phenoxy; X is halogen or trifluoromethyl and at least one X is halogen and another is trifluoromethyl; and n is 2 to 5.
Claim 2
Dependent Claim
40 words
A compound having the formula: ##SPC2## R is hydroxy, alkoxy of 1 to 4 carbon atoms, or phenoxy; X is halogen or trifluoromethyl and at least one X is halogen and another is trifluoromethyl; and n is 2 to 5.
Claim 3
Dependent Claim
12 words
A compound of claim 1, wherein said compound is methyl 2-nitro-5-(4'-chloro-2'-trifluoromethylphenoxy) benzoate.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-09-07 | 1980-03-08 | 1980-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-09-07 | 1984-03-08 | 1984-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-09-07 | 1988-03-08 | 1988-09-07 | $7700.00 | Window Closed / Lapsed |