Patent US3901902A successfully refreshed from Google Patents.
US3901902A
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Heterocyclic thiadiazolylureas
Assignee: Velsicol Chemical LLC
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Filing: 1973-08-09
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Granted: 1975-08-26
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Expires: 1993-08-09
Abstract
Abstract This invention discloses new compounds of the formula wherein R1 is selected from the group consisting of alkyl, alkenyl, haloalkyl, cycloalkyl, alkoxy, alkylthio, alkylsulfonyl and alkylsulfinyl; Z1 and Z2 are independently selected from the group consisting of oxygen and sulfur; R2, R3, R4, R5, R6 and R7 are each selected from the group consisting of hydrogen and alkyl, m is an integer from 0 to 2, and n is the integer 1 or 2. The compounds of the the above description are useful as herbicides.
Inventors
- 👤 John Krenzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:54
CPC Classifications
C; C07; C07D; C07D285/00; C07D285/01; C07D285/02; C07D285/04; C07D285/12; C07D285/125; C07D285/135; C07D317/00; C07D317/08; C07D317/10; C07D317/14; C07D317/16; C07D317/28; C07D339/00
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
5 words
A COMPOUND OF THE FORMULA
Claim 2
Dependent Claim
5 words
A COMPOUND OF THE FORMULA
Claim 3
Dependent Claim
7 words
The compound of claim 1, N-(2-trifluoromethyl-1,3,4-thiadiazol-5-yl)-N''-(1,3-dioxolan-2-ylmethyl)-N'' -methylurea.
Claim 4
Dependent Claim
7 words
The compound of claim 1, N-(2-t-butyl-1,3,4-thiadiazol-5-yl)-N''-(1,3-dioxolan-2-ylmethyl)-N'' -ethylurea.
Claim 5
Dependent Claim
7 words
The compound the claim 1, N-(2-methylthio-1,3,4-thiadiazol-5-yl)-N-methyl-N''-(1,3-dithiepan-2 -ylmethyl)-N''-methylurea.
Claim 6
Dependent Claim
7 words
The compound of claim 1, N-(2-methylsulfonyl-1,3,4-thiadiazol-5-yl)-N-methyl-N''-(1,3-dioxan-2 -ylmethyl)urea.
Claim 7
Dependent Claim
7 words
The compound of claim 1, N-(2-isopropyl-1,3,4-thiadiazol-5-yl)-N-ethyl-N''-(4-methyl-1,3-dioxolan-2 -ylmethyl)urea.
References Cited (Backward Citations)
US3759940A
Cited
US3787432A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-08-25 | 1979-02-24 | 1979-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-25 | 1983-02-24 | 1983-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-25 | 1987-02-24 | 1987-08-26 | $7700.00 | Window Closed / Lapsed |