US3928437A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phenoxy-phenyl, phenylthiophenyl, phenylsulfonylphenyl and phenylaminophenyl diaminothioureas
Assignee: Novartis Corp
•
Filing: 1973-10-11
•
Granted: 1975-12-23
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Expires: 1993-10-11
Abstract
Abstract New thio ureas in which a p-phenoxyphenyl, p-phenylthio-phenyl or p-phenylaminophenyl radical is attached to one nitrogen atom and which are substituted at the other nitrogen atom either by two lower alkyl groups or a polymethylene bridging member of 2 to 6 carbon atoms, whereby one of the methylene groups can be replaced by an optionally substituted imino group, processes for the production of the new compounds and compositions containing these compounds.
Inventors
- 👤 Rudiger Spaun
- 👤 Alain Claude Rochat
- 👤 Jean-Jacques Gallay
- 👤 Paul Brenneisen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:13
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/16; C07D295/20; C07D295/215; C07C; C07C335/00; C07C335/04; C07C335/16; C07C335/18; C07C335/20
Claims Analysis
Total Claims: 5
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
38 words
A compound according to claim 1 in which R1 is halogen, nitro or low alkyl; R2 and R3 are hydrogen; each of R4 and R5 is alkyl of from 1 to 4 carbon atoms; and X is imino.
Claim 4
Dependent Claim
5 words
N-(4-(4''-chloroanilino)-phenyl)-N'',N''-diethylthiourea according to claim 2.
Claim 5
Dependent Claim
5 words
N-(4-(4''-methylanilino)-phenyl)-N'',N''-diethylthiourea according to claim 2.
References Cited (Backward Citations)
US3060235A
Cited
US3803198A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-22 | 1979-06-23 | 1979-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-22 | 1983-06-23 | 1983-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-22 | 1987-06-23 | 1987-12-23 | $7700.00 | Window Closed / Lapsed |