US2798074A
Expired / Lapsed
US
⏱️ 0.0 years remaining
1. 2-diphenyl-3. 5-dioxo-4-[3'-(pyridyl-2''-mercapto)-n-propyl]-pyrazolidine
Assignee: Novartis Corp
•
Filing: 1955-05-20
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Granted: 1957-07-02
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Expires: 1975-05-20
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 07:56
CPC Classifications
C; C07; C07D; C07D401/00; C07D401/02; C07D401/12; C07D231/00; C07D231/02; C07D231/10; C07D231/14; C07D231/28; C07D231/30; C07D231/32; C07D231/36
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
2 words
2- DIPHENYL-3,5-DIOXO-4-(3''-(PYRIDYL-2"-MERCAPTO)-NPROPYL)-PYRAZOLIDINE.
Claim 2
Dependent Claim
2 words
2- DIPHENYL-3,5-DIOXO-4-(3''-(PYRIDYL-2"-MERCAPTO)-NPROPYL)-PYRAZOLIDINE.
References Cited (Backward Citations)
BE506891A
Cited
US2700671A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-01 | 1960-12-31 | 1961-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-01 | 1964-12-31 | 1965-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-01 | 1968-12-31 | 1969-07-02 | $7700.00 | Window Closed / Lapsed |