US3812209A
Expired / Lapsed
US
⏱️ 0.0 years remaining
1-hydrocarbyldithio-3-aryl ureas
Assignee: Chevron USA Inc
•
Filing: 1970-11-09
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Granted: 1974-05-21
•
Expires: 1990-11-09
Abstract
Abstract Compounds of the formula WHEREIN R is phenyl optionally substituted with halogens nitro groups, lower alkyl groups or lower alkoxy groups, R1 and R2 are hydrogen or lower alkyl and R3 is a hydrocarbyl group of 1 to 14 carbon atoms free of aliphatic unsaturation optionally substituted with halogen atoms, nitro groups or alkoxy groups. The compounds are herbicidal.
Inventors
- 👤 M Brown
- 👤 G Kohn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:52
CPC Classifications
C; C07; C07C; C07C381/00
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
19 words
The process of claim 1, wherein R1 is hydrogen and R2 is alkyl of one to two carbon atoms.
Claim 2
Dependent Claim
18 words
The process of claim 2 wherein R is phenyl substituted with one to two fluorine or chlorine atoms.
Claim 3
Dependent Claim
17 words
The process of claim 3 wherein R3 is alkyl of one to four carbon atoms or phenyl.
Claim 4
Dependent Claim
9 words
The process of claim 4 wherein R is 2-fluorophenyl.
Claim 5
Dependent Claim
9 words
The process of claim 4 wherein R is 3,4-dichlorophenyl.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-05-20 | 1977-11-19 | 1978-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-20 | 1981-11-19 | 1982-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-20 | 1985-11-19 | 1986-05-21 | $7700.00 | Window Closed / Lapsed |