Patent US3779736A successfully refreshed from Google Patents.
US3779736A
Expired / Lapsed
US
⏱️ 0.0 years remaining
1,3,4-thiadiazine herbicides
Assignee: Chevron USA Inc
•
Filing: 1971-01-04
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Granted: 1973-12-18
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Expires: 1991-01-04
Abstract
Abstract New N-substituted derivatives of 2-amino-5-tert.butyl-6H-1,3,4thiadiazine are employed to combat undesired vegetation by both post- and pre-emergent application techniques, carbamyl substituted compounds are preferred.
Inventors
- 👤 W Doyle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:16
CPC Classifications
C; C07; C07D; C07D285/00; C07D285/15; C07D285/16
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
21 words
The method of combating undesired vegetation comprising applying to the locus of the undesired vegetation a herbicidally effective amount of N-methyl-N''-(5-tert.butyl-6H-1,3,4-thiadiazin-2-yl)urea.
Claim 2
Independent Claim
21 words
The method of combating undesired vegetation comprising applying to the locus of the undesired vegetation a herbicidally effective amount of N-ethyl-N''-methyl-N-(5-tert.butyl-6H-1,3,4-thiadiazin-2-yl)urea.
Claim 3
Independent Claim
21 words
The method of combating undesired vegetation comprising applying to the locus of the undesired vegetation a herbicidally effective amount of N-allyl-N''-(5-tert.butyl-6H-1,3,4-thiadiazin-2-yl)-N''-methylurea.
References Cited (Backward Citations)
US2838389A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-17 | 1977-06-18 | 1977-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-17 | 1981-06-18 | 1981-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-17 | 1985-06-18 | 1985-12-18 | $7700.00 | Window Closed / Lapsed |