US4728355A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pyridazinylurea plant regulators
Assignee: FMC Corp
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Filing: 1985-10-10
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Granted: 1988-03-01
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Expires: 2005-10-10
Abstract
Abstract Pyridazinylurea plant regulators of the formula ##STR1## and acid addition salts thereof; wherein R is alkyl or cycloalkyl, R 1 is hydrogen or alkyl, each X independently is halogen, alkoxy, alkylthi or alkylsulfonyl, and p is 0, 1 or 2.
Inventors
- 👤 II Robert N. Henrie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:59
CPC Classifications
A; A01; A01N; A01N47/00; A01N47/08; A01N47/28; A01N47/36; C; C07; C07D; C07D237/00; C07D237/02; C07D237/06; C07D237/10; C07D237/20; C07D237/22
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
85 words
A method of retarding senescence in soybean and cotton plants which comprises applying to the plant a plant regulating amount of a pyridazinylurea compound of the formula: ##STR10## and acid addition salts thereof; wherein R is alkyl(C 1 -C 8 ) or cycloalkyl(C 3 -C 10 ), R 1 is hydrogen or alkyl(C 1 -C 8 ), each X independently is halogen, alkoxy(C 1 -C 8 ), alkyl(C 1 -C 8 )thio or alkyl(C 1 -C 8 )sulfonyl, and p is 0, 1 or 2.
Claim 2
Independent Claim
85 words
A method of retarding senescence in soybean and cotton plants which comprises applying to the plant a plant regulating amount of a pyridazinylurea compound of the formula: ##STR10## and acid addition salts thereof; wherein R is alkyl(C 1 -C 8 ) or cycloalkyl(C 3 -C 10 ), R 1 is hydrogen or alkyl(C 1 -C 8 ), each X independently is halogen, alkoxy(C 1 -C 8 ), alkyl(C 1 -C 8 )thio or alkyl(C 1 -C 8 )sulfonyl, and p is 0, 1 or 2.
Claim 3
Dependent Claim
22 words
The method of claim 1 wherein the compound is selected from N-(4-pyridazinyl)-N'-cyclopentylurea, N-(4-pyridazinyl)-N'-cyclopentyl-N'-methylurea, N-(4-pyridazinyl)-N'-cycloheptylurea, N-(4-pyridazinyl)-N'-cyclohexylurea, N-(4-pyridazinyl)-N'-(1-methylethyl)urea, N-(4-pyridazinyl)-N'-(1,1-dimethylethyl)urea, N-(4-pyridazinyl)-N'-ethylurea, N-(4-pyridazinyl)-N'-n-butyl-N'-methylurea, N-(6-chloro-4-pyridazinyl)-N'-(1-methylethyl)urea and N-(5,6-dichloro-4-pyridazinyl)-N'-(1-methylethyl)urea.
Claim 4
Dependent Claim
11 words
The method of claim 1 wherein the pyridazinylurea compound is N-(4-pyridazinyl)-N'-cyclopentylurea.
Claim 5
Dependent Claim
11 words
The method of claim 1 wherein the pyridazinylurea compound is N-(4-pyridazinyl)-N'-cycloheptylurea.
Claim 6
Dependent Claim
11 words
The method of claim 1 wherein the pyridazinylurea compound is N-(4-pyridazinyl)-N'-cyclohexylurea.
Claim 7
Dependent Claim
11 words
The method of claim 1 wherein the pyridazinylurea compound is N-(4-pyridazinyl)-N'-(1-methylethyl)urea.
Claim 8
Dependent Claim
11 words
The method of claim 1 wherein the pyridazinylurea compound is N-(4-pyridazinyl)-N'-(1,1-dimethylethyl)urea.
Claim 9
Dependent Claim
11 words
The method of claim 1 wherein the pyridazinylurea compound is N-(4-pyridazinyl)-N'-ethylurea.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-03-01 | 1991-08-31 | 1992-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-03-01 | 1995-08-31 | 1996-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-03-01 | 1999-08-31 | 2000-03-01 | $7700.00 | Window Closed / Lapsed |