US4025517A
Expired / Lapsed
US
⏱️ 0.0 years remaining
4-Oxo-2-hexahydropyrimidinylidene ureas
Assignee: Janssen Pharmaceuticals Inc
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Filing: 1976-06-07
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Granted: 1977-05-24
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Expires: 1996-06-07
Abstract
Abstract Compounds of the class of 4-oxo-2-imidazolidinylidene ureas and 4-oxo-2-hexahydropyrimidinylidene ureas, useful as anti-secretory agents and central nervous system (CNS) depressants.
Inventors
- 👤 Chris Royce Rasmussen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:56
CPC Classifications
C; C07; C07D; C07D233/00; C07D233/54; C07D233/66; C07D233/88
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
42 words
A 4-oxo-2-hexahydropyrimidinylidene urea having the formula ##STR8## wherein Ar is a member selected from the group consisting of phenyl, nitrophenyl, trifluoromethylphenyl, diloweralkylaminophenyl, and phenyl substituted with from one to three members each selected from the group consisting of halo, loweralkyl, and loweralkoxy.
Claim 2
Dependent Claim
42 words
A 4-oxo-2-hexahydropyrimidinylidene urea having the formula ##STR8## wherein Ar is a member selected from the group consisting of phenyl, nitrophenyl, trifluoromethylphenyl, diloweralkylaminophenyl, and phenyl substituted with from one to three members each selected from the group consisting of halo, loweralkyl, and loweralkoxy.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-05-23 | 1980-11-22 | 1981-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-23 | 1984-11-22 | 1985-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-23 | 1988-11-22 | 1989-05-24 | $7700.00 | Window Closed / Lapsed |