US3970652A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Selectively herbicidal 2-substituted-4H-3,1-benzoxazin-4-ones
Assignee: Chevron USA Inc
•
Filing: 1972-06-02
•
Granted: 1976-07-20
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Expires: 1992-06-02
Abstract
Abstract Unwanted vegetation is combated in the presence of grain crops and soybeans by post-emergent application of one or more of the following compounds:
Inventors
- 👤 William C. Doyle, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:44
CPC Classifications
C; C07; C07D; C07D265/00; C07D265/04; C07D265/12; C07D265/14; C07D265/20; C07D265/22
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
1 words
2-(m-Trifluoromethylphenyl)-4H-3,1-benzoxazin-4-one.
Claim 2
Dependent Claim
1 words
2-(m-Trifluoromethylphenyl)-4H-3,1-benzoxazin-4-one.
Claim 3
Dependent Claim
1 words
2-(o-Trifluoromethylphenyl)-4H-3,1-benzoxazin-4-one.
Claim 4
Dependent Claim
1 words
2-(o-Trifluoromethylphenyl)-4H-3,1-benzoxazin-4-one.
Claim 5
Dependent Claim
1 words
2-(p-Trifluoromethylphenyl)-4H-3,1-benzoxazin-4-one.
Claim 6
Dependent Claim
1 words
2-(p-Trifluoromethylphenyl)-4H-3,1-benzoxazin-4-one.
Claim 7
Dependent Claim
1 words
2-(4-methyl-1,2,3-thiadiazol-5-yl)-4H-3,1-benzoxazin-4-one.
Claim 8
Dependent Claim
1 words
2-(4-methyl-1,2,3-thiadiazol-5-yl)-4H-3,1-benzoxazin-4-one.
References Cited (Backward Citations)
US3357977A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-07-20 | 1980-01-19 | 1980-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-07-20 | 1984-01-19 | 1984-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-07-20 | 1988-01-19 | 1988-07-20 | $7700.00 | Window Closed / Lapsed |