Patent US4431822A successfully refreshed from Google Patents.
US4431822A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tetrahydrophthalimides, and their production and use
Assignee: Sumitomo Chemical Co Ltd
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Filing: 1982-03-23
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Granted: 1984-02-14
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Expires: 2002-03-23
Abstract
Abstract A compound of the formula: <IMAGE> wherein X is a chlorine atom or a bromine atom, which is useful as a herbicide.
Inventors
- 👤 Eiki Nagano
- 👤 Shunichi Hashimoto
- 👤 Ryo Yoshida
- 👤 Hiromichi Oshio
- 👤 Katsuzo Kamoshita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:37
CPC Classifications
C; C07; C07D; C07D209/00; C07D209/02; C07D209/44; C07D209/48; A; A01; A01N; A01N37/00; A01N37/18; A01N37/32; C07C; C07C205/00; C07C205/13; C07C205/26; C07C205/39; C07C205/42; C07C205/43
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
16 words
A compound of the formula: ##STR12## wherein X is a chlorine atom or a bromine atom.
Claim 2
Dependent Claim
16 words
A compound of the formula: ##STR12## wherein X is a chlorine atom or a bromine atom.
Claim 3
Dependent Claim
19 words
A herbicidal composition which comprises the compound according to claim 1 as an active ingredient and an inert carrier.
Claim 4
Independent Claim
33 words
A method for controlling weeds which comprises applying as an active ingredient a herbicidally effective amount of the compound of the formula: ##STR13## wherein X is a chlorine atom or a bromine atom.
Claim 5
Independent Claim
33 words
A method for controlling weeds which comprises applying as an active ingredient a herbicidally effective amount of the compound of the formula: ##STR13## wherein X is a chlorine atom or a bromine atom.
References Cited (Backward Citations)
US3878224A
Cited
US3984435A
Cited
US4001272A
Cited
US4032326A
Cited
GB2046754A
Cited
US4292070A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-02-13 | 1987-08-15 | 1988-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-02-13 | 1991-08-15 | 1992-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-02-13 | 1995-08-15 | 1996-02-14 | $7700.00 | Window Closed / Lapsed |