US2889326A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acyl derivatives of 5, 6 dihydro-benzo [c]-cinnoline
Assignee: Novartis Corp
•
Filing: 1958-07-31
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Granted: 1959-06-02
•
Expires: 1978-07-31
Abstract
No abstract record available.
Inventors
- 👤 Pfister Rudolf
- 👤 Hafliger Franz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:07
CPC Classifications
C; C07; C07D; C07D487/00; C07D487/02; C07D487/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
7 words
AN N.N''-(PHENYLMERCAPTO-LOWER ALKYL MALONY)-DIHYDRO-BENZO(C)CINNOLINE OF THE FORMULA
Claim 2
Dependent Claim
7 words
AN N.N''-(PHENYLMERCAPTO-LOWER ALKYL MALONY)-DIHYDRO-BENZO(C)CINNOLINE OF THE FORMULA
References Cited (Backward Citations)
US2778829A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-06-01 | 1962-12-01 | 1963-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-06-01 | 1966-12-01 | 1967-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-06-01 | 1970-12-01 | 1971-06-02 | $7700.00 | Window Closed / Lapsed |