US4397678A
Expired / Lapsed
US
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Plant growth regulators
Assignee: Individual
•
Filing: 1982-01-27
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Granted: 1983-08-09
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Expires: 2002-01-27
Abstract
Abstract Plant growth regulators of the N-(4-pyridazinyl)urea and thiourea type are disclosed which exhibit excellent cytokinin-like activities and are useful for regulating plant growth in various manners, such as acceleration and suppression.
Inventors
- 👤 Toshihiko Okamoto
- 👤 Yo Isogai
- 👤 Koichi Shudo
- 👤 Soshiro Takahashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:02
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
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
113 words
An agricultural composition useful as a plant growth regulator comprising as an active ingredient a compound of formula: ##STR5## wherein R 1 and R 2 , which may be the same or different, each represents a hydrogen atom, a lower alkyl group, a halogen atom, a lower alkoxy group, an aryloxy group, a halomethyl group, a cyano group, an alkylthio group, a carboxy group or an alkoxycarbonyl group; X represents an oxygen atom or a sulfur atom; and n represents 1, 2 or 3; and when n is 2 or 3, R 1 and R 2 each may be different, in an effective plant-growth regulating amount, together with an inert carrier or diluent.
Claim 2
Dependent Claim
113 words
An agricultural composition useful as a plant growth regulator comprising as an active ingredient a compound of formula: ##STR5## wherein R 1 and R 2 , which may be the same or different, each represents a hydrogen atom, a lower alkyl group, a halogen atom, a lower alkoxy group, an aryloxy group, a halomethyl group, a cyano group, an alkylthio group, a carboxy group or an alkoxycarbonyl group; X represents an oxygen atom or a sulfur atom; and n represents 1, 2 or 3; and when n is 2 or 3, R 1 and R 2 each may be different, in an effective plant-growth regulating amount, together with an inert carrier or diluent.
Claim 3
Dependent Claim
22 words
The agricultural composition of claim 1 wherein said active ingredient is contained in a concentration of about 0.000001 ppm to about 1%.
Claim 4
Dependent Claim
16 words
The agricultural composition of claim 1 wherein said active ingredient is selected from N-(4-pyridazinyl)-N'-phenylurea and N-(4-pyridazinyl)-N'-(m-fluorophenyl)urea.
Claim 5
Independent Claim
115 words
A method of controlling plant growth which comprises contacting a plant or a part thereof with a compound of formula: ##STR6## wherein R 1 and R 2 , which may be the same or different, each represents a hydrogen atom, a lower alkyl group, a halogen atom, a lower alkoxy group, an aryloxy group, a halomethyl group, a cyano group, an alkylthio group, a carboxy group or an alkoxycarbonyl group; X represents an oxygen atom or a sulfur atom; and n represents 1, 2 or 3; and when n is 2 or 3, R 1 and R 2 each may be different, in an amount effective for regulation of the growth of the plant involved.
Claim 6
Independent Claim
115 words
A method of controlling plant growth which comprises contacting a plant or a part thereof with a compound of formula: ##STR6## wherein R 1 and R 2 , which may be the same or different, each represents a hydrogen atom, a lower alkyl group, a halogen atom, a lower alkoxy group, an aryloxy group, a halomethyl group, a cyano group, an alkylthio group, a carboxy group or an alkoxycarbonyl group; X represents an oxygen atom or a sulfur atom; and n represents 1, 2 or 3; and when n is 2 or 3, R 1 and R 2 each may be different, in an amount effective for regulation of the growth of the plant involved.
References Cited (Backward Citations)
US4193788A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-08-08 | 1987-02-07 | 1987-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-08-08 | 1991-02-07 | 1991-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-08-08 | 1995-02-07 | 1995-08-09 | $7700.00 | Window Closed / Lapsed |