US3882142A
Expired / Lapsed
US
⏱️ 0.0 years remaining
1,2-Dialkyl-3,5-diphenyl pyrazolium salts
Assignee: Wyeth Holdings LLC
•
Filing: 1972-11-17
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Granted: 1975-05-06
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Expires: 1992-11-17
Abstract
Abstract This invention relates to the use of certain 1,2-dialkyl-3,5diphenyl pyrazolium salts as herbicides. It also relates to herbicidal formulations of such salts. It further relates to certain novel pyrazolium salts. Finally, it relates to methods for the preparation and use of herbicidal formulations and novel salts.
Inventors
- 👤 Bryant Leonidas Walworth
- 👤 Erwin Klingsberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:32
CPC Classifications
C; C07; C07D; C07D231/00; C07D231/02; C07D231/10; C07D231/12
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
4 words
ACOMPOUND HAVING THE FORMULA:
Claim 2
Dependent Claim
4 words
ACOMPOUND HAVING THE FORMULA:
Claim 3
Dependent Claim
5 words
The compound: 1,2-dimethyl-3,5-diphenylpyrazolium methyl sulfate.
Claim 4
Dependent Claim
5 words
The compound: 1,2-dimethyl-3,5-diphenylpyrazolium methyl sulfate.
Claim 5
Dependent Claim
4 words
The compound: 1,2-dimethyl-3,5-diphenylpyrazolium p-toluenesulfonate.
Claim 6
Dependent Claim
4 words
The compound: 1,2-dimethyl-3,5-diphenylpyrazolium p-toluenesulfonate.
Claim 7
Dependent Claim
5 words
The cocmpound: 1,2-dimethyl-3-(m-methylphenyl)-5-phenylpyrazolium methyl sulfate.
Claim 8
Dependent Claim
5 words
The cocmpound: 1,2-dimethyl-3-(m-methylphenyl)-5-phenylpyrazolium methyl sulfate.
Claim 9
Dependent Claim
5 words
The compound: 1,2-dimethyl-3-(m-chlorophenyl)-5-phenylpyrazolium methyl sulfate.
Claim 10
Dependent Claim
5 words
The compound: 1,2-dimethyl-3-(m-chlorophenyl)-5-phenylpyrazolium methyl sulfate.
Claim 11
Dependent Claim
5 words
The compound: 1,2-dimethyl-3-(o-methylphenyl)-5-phenylpyrazolium methyl sulfate.
Claim 12
Dependent Claim
5 words
The compound: 1,2-dimethyl-3-(o-methylphenyl)-5-phenylpyrazolium methyl sulfate.
Claim 13
Dependent Claim
5 words
The compound: 1,2-dimethyl-3-(p-chlorophenyl)-5-phenylpyrazolium methyl sulfate.
Claim 14
Dependent Claim
5 words
The compound: 1,2-dimethyl-3-(p-chlorophenyl)-5-phenylpyrazolium methyl sulfate.
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) | 1978-05-05 | 1978-11-04 | 1979-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-05 | 1982-11-04 | 1983-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-05 | 1986-11-04 | 1987-05-06 | $7700.00 | Window Closed / Lapsed |