US4017298A
Expired / Lapsed
US
⏱️ 0.0 years remaining
1,2,4-Trialkyl-3,5-diphenylpyrazolium salts as herbicides
Assignee: Wyeth Holdings LLC
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Filing: 1975-05-02
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Granted: 1977-04-12
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Expires: 1995-05-02
Abstract
Abstract There is provided a method for the preemergence and postemergence control of undesirable plant species by the application of a herbicidally effective amount of a 1,2,4-trialkyl disubstituted pyrazolium salt to the foliage of said undesirable plant species, and to soil containing seeds thereof.
Inventors
- 👤 Barrington Cross
- 👤 Bryant Leonidas Walworth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:50
CPC Classifications
C; C07; C07D; C07D231/00; C07D231/02; C07D231/10; C07D231/12; A; A01; A01N; A01N43/00; A01N43/48; A01N43/56; C07C; C07C45/00; C07C45/61; C07C45/67; C07C45/68; C07C49/00; C07C49/76; C07C49/782; C07C49/784; C07C49/794; C07C49/796; C07F; C07F1/00; C07F1/04
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
143 words
A method for the herbicidal control of undesirable plant species comprising: applying to the foliage of said undesirable plant species, or to the soil containing the seeds of said plant species, a herbicidally effective amount of a compound having the formula: ##STR8##wherein R 1 and R 2 each represent C 1 -C 4 alkyl, R 3 represents a member selected from the group consisting of C 2 -C 4 alkyl, C 3 -C 7 cycloalkyl, phenyl and benzyl; R 4 represents a member selected from the group consisting of C 1 -C 5 alkyl, allyl, propargyl, carbethoxymethyl and benzyl; R 5 represents a member selected from the group consisting of C 2 -C 4 alkyl, C 3 -C 7 cycloalkyl and phenyl; X represents an anion having the charge of 1, 2 or 3, and m is an integer from 1 to 3.
Claim 2
Independent Claim
143 words
A method for the herbicidal control of undesirable plant species comprising: applying to the foliage of said undesirable plant species, or to the soil containing the seeds of said plant species, a herbicidally effective amount of a compound having the formula: ##STR8##wherein R 1 and R 2 each represent C 1 -C 4 alkyl, R 3 represents a member selected from the group consisting of C 2 -C 4 alkyl, C 3 -C 7 cycloalkyl, phenyl and benzyl; R 4 represents a member selected from the group consisting of C 1 -C 5 alkyl, allyl, propargyl, carbethoxymethyl and benzyl; R 5 represents a member selected from the group consisting of C 2 -C 4 alkyl, C 3 -C 7 cycloalkyl and phenyl; X represents an anion having the charge of 1, 2 or 3, and m is an integer from 1 to 3.
Claim 3
Dependent Claim
37 words
The method according to claim 1, wherein the compound has the structure wherein R 1 , R 2 and R 4 are methyl; R 3 and R 5 are phenyl; X and m are as defined above.
Claim 4
Dependent Claim
14 words
The method according to claim 1, wherein said compound is 1,2-dimethyl-3,5-diphenyl-4-ethylpyrazolium methyl sulfate/hydrogen sulfate.
Claim 5
Dependent Claim
12 words
The method according to claim 1, wherein said compound is 1,2-dimethyl-3,5-diphenyl-4-n-propylpyrazolium perchlorate.
Claim 6
Dependent Claim
13 words
The method according to claim 1, wherein said compound is 4-benzyl-1,2-dimethyl-3,5-diphenylpyrazolium hydrogen sulfate.
Claim 7
Dependent Claim
12 words
The method according to claim 1, wherein said compound is 4-benzyl-1,2-dimethyl-3,5-diphenylpyrazolium perchlorate.
Claim 8
Dependent Claim
12 words
The method according to claim 1, wherein said compound is 1,2-dimethyl-3,5-diphenyl-4-i-propylpyrazolium perchlorate.
Claim 9
Dependent Claim
12 words
The method according to claim 1, wherein said compound is 1,2-dimethyl-3,5-diphenyl-4-n-pentylpyrazolium perchlorate.
Claim 10
Dependent Claim
13 words
The method according to claim 1, wherein said compound is 1,2-dimethyl-3,5-diphenyl-4-(2-propynyl)pyrazolium hydrogen sulfate.
Claim 11
Dependent Claim
13 words
The method according to claim 1, wherein said compound is 4-allyl-1,2-dimethyl-3,5-diphenylpyrazolium hydrogen sulfate.
Claim 12
Dependent Claim
14 words
The method according to claim 1, wherein said compound is 4-(carboxymethyl)-1,2-dimethyl-3,5-diphenylpyrazolium iodide-, ethyl ester.
Claim 13
Dependent Claim
13 words
The method according to claim 1, wherein said compound is 3,5-dicyclohexyl-1,2,4-trimethylpyrazolium methyl sulfate.
Claim 14
Dependent Claim
23 words
The method according to claim 1, wherein said compound is applied at the rate of from 0.56 kg. to 11.2 kg. per hectare.
Claim 15
Dependent Claim
23 words
The method according to claim 1, wherein said compound is applied at the rate of from 0.56 kg. to 4.48 kg., per hectare.
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) | 1980-04-11 | 1980-10-11 | 1981-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-04-11 | 1984-10-11 | 1985-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-04-11 | 1988-10-11 | 1989-04-12 | $7700.00 | Window Closed / Lapsed |