US4447256A
Expired / Lapsed
US
⏱️ 0.0 years remaining
N-(Unsubstituted or substituted pyridyl)aminomethylene-diphosphonic acids, herbicidal compositions containing same, their use for herbicides, and process for preparing same
Assignee: Nissan Chemical Corp
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Filing: 1980-07-29
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Granted: 1984-05-08
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Expires: 2000-07-29
Abstract
Abstract N-(Unsubstituted or substituted pyridyl)aminomethylene-diphosphonic acids represented by the formula: ##STR1## wherein each of R 1 , R 2 and R 3 is independently hydrogen or lower alkyl, and each of X and Y is independently hydrogen, halogen, nitro, acetamino, carboxyl, lower alkyl, methoxycarbonyl, hydroxyl or methoxy, and salts thereof, have effective herbicidal effects on postemergence of plants and selective inactivity against cotton plants.
Inventors
- 👤 Fumio Suzuki
- 👤 Yoshihiro Fujikawa
- 👤 Susumu Yamamoto
- 👤 Hidemi Mizutani
- 👤 Tunehiko Ohya
- 👤 Takashi Ikai
- 👤 Toshihiko Oguchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 02:01
CPC Classifications
A; A01; A01N; A01N57/00; A01N57/18; A01N57/24; C; C07; C07F; C07F9/00; C07F9/02; C07F9/547; C07F9/553; C07F9/576; C07F9/58
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
20 words
A compound of the formula ##STR53## wherein Z denotes hydrogen, an alkyl group having 1-3 carbon atoms or a halogen.
Claim 2
Dependent Claim
20 words
A compound of the formula ##STR53## wherein Z denotes hydrogen, an alkyl group having 1-3 carbon atoms or a halogen.
Claim 3
Dependent Claim
9 words
The compound of claim 1 wherein Z denotes hydrogen.
Claim 4
Dependent Claim
9 words
The compound of claim 1 wherein Z denotes methyl.
Claim 5
Dependent Claim
9 words
The compound of claim 1 wherein Z denotes ethyl.
Claim 6
Dependent Claim
9 words
The compound of claim 1 wherein Z denotes fluorine.
Claim 7
Dependent Claim
33 words
A herbicidal composition comprising a herbicidally effective amount of a compound of the formula ##STR54## wherein Z denotes hydrogen, an alkyl group having 1-3 carbon atoms or a halogen, or a salt thereof.
Claim 8
Dependent Claim
33 words
A herbicidal composition comprising a herbicidally effective amount of a compound of the formula ##STR54## wherein Z denotes hydrogen, an alkyl group having 1-3 carbon atoms or a halogen, or a salt thereof.
Claim 9
Dependent Claim
9 words
The composition of claim 6 wherein Z denotes hydrogen.
Claim 10
Dependent Claim
9 words
The composition of claim 6 wherein Z denotes methyl.
Claim 11
Dependent Claim
9 words
The composition of claim 6 wherein Z denotes ethyl.
Claim 12
Dependent Claim
9 words
The composition of claim 6 wherein Z denotes fluorine.
Claim 13
Independent Claim
41 words
A method of controlling weeds comprising: applying to the surfaces of weeds a weed-controlling effective amount of a compound of the formula ##STR55## wherein Z denotes hydrogen, an alkyl group having 1-3 carbon atoms or a halogen or a salt thereof.
Claim 14
Independent Claim
41 words
A method of controlling weeds comprising: applying to the surfaces of weeds a weed-controlling effective amount of a compound of the formula ##STR55## wherein Z denotes hydrogen, an alkyl group having 1-3 carbon atoms or a halogen or a salt thereof.
Claim 15
Dependent Claim
9 words
The method of claim 11 wherein Z denotes hydrogen.
Claim 16
Dependent Claim
9 words
The method of claim 11 wherein Z denotes methyl.
Claim 17
Dependent Claim
9 words
The method of claim 11 wherein Z denotes ethyl.
Claim 18
Dependent Claim
9 words
The method of claim 11 wherein Z denotes fluorine.
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) | 1987-05-08 | 1987-11-07 | 1988-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-05-08 | 1991-11-07 | 1992-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-05-08 | 1995-11-07 | 1996-05-08 | $7700.00 | Window Closed / Lapsed |