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US3852348A
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Ether and sulfide meta-substituted phenyl ureas
Assignee: Zeneca Inc
•
Filing: 1973-03-12
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Granted: 1974-12-03
•
Expires: 1993-03-12
Abstract
Abstract Ether and sulfide meta-substituted phenyl ureas having the formula
Inventors
- 👤 E Teach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:08
CPC Classifications
C; C07; C07C; C07C275/00; C07C275/28; C07C275/32; C07C275/34; C07C323/00; C07C323/23; C07C323/39; C07C323/43; C07C323/44; C07C335/00; C07C335/04; C07C335/16
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
5 words
A COMPOUND HAVING THE FORMULA
Claim 2
Dependent Claim
5 words
A COMPOUND HAVING THE FORMULA
Claim 3
Dependent Claim
16 words
A compound according to claim 1 in which R1 is hydrogen and R2 is lower alkyl.
Claim 4
Dependent Claim
15 words
A compound according to claim 2 in which R is 3,3-dimethyl-2-butanonyl and R2 is methyl.
Claim 5
Dependent Claim
15 words
A compound according to claim 2 in which R is 3,3-dimethyl-2-butanonyl and R2 is ethyl.
Claim 6
Dependent Claim
15 words
A compound according to claim 2 in which R is 3,3-dimethyl-2-butanonyl and R2 is isopropyl.
Claim 7
Dependent Claim
15 words
A compound according to claim 2 in which R is 3,3-dimethyl-2-butanonyl and R2 is n-butyl.
Claim 8
Dependent Claim
15 words
A compound according to claim 2 in which R is 3,3-dimethyl-2-butanonyl and R2 is tert.-butyl.
Claim 9
Dependent Claim
17 words
A compound according to claim 1 in which R1 is lower alkyl and R2 is lower alkyl.
Claim 10
Dependent Claim
18 words
A compound according to claim 8 in which R is 3,3-dimethyl-2-butanonyl, R1 is methyl and R2 is methyl.
References Cited (Backward Citations)
US2655447A
Cited
GB999862A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-02 | 1978-06-03 | 1978-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-02 | 1982-06-03 | 1982-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-02 | 1986-06-03 | 1986-12-03 | $7700.00 | Window Closed / Lapsed |