Patent US3648073A successfully refreshed from Google Patents.
Patent US3202661A successfully refreshed from Google Patents.
US3202661A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Substituted 3-amino 4-phenyl quinolones
Assignee: F Hoffmann La Roche AG
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Filing: 1962-11-27
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Granted: 1965-08-24
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Expires: 1982-11-27
Abstract
No abstract record available.
Inventors
- 👤 Brust Bernard
- 👤 Fryer Rodney Ian
- 👤 Sternbach Leo Henryk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 06:14
CPC Classifications
C; C07; C07D; C07D215/00; C07D215/02; C07D215/16; C07D215/38
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
14 words
A COMPOUND SELECTED FROM THE GROUP OF COMPOUNDS CONSISTING OF COMPOUNDS OF THE FORMULA
Claim 2
Dependent Claim
10 words
A PROCESS FOR THE PREPARATION OF COMPOUNDS OF THE FORMULA
References Cited (Backward Citations)
US2912460A
Cited
US2901485A
Cited
US2794020A
Cited
US3042720A
Cited
US3005823A
Cited
US3014036A
Cited
US3066145A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-23 | 1969-02-22 | 1969-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-23 | 1973-02-22 | 1973-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-23 | 1977-02-22 | 1977-08-24 | $7700.00 | Window Closed / Lapsed |