US2474820A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Quinoline compounds and process of making same
Assignee: Parke Davis and Co LLC
•
Filing: 1945-02-08
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Granted: 1949-07-05
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Expires: 1965-02-08
Abstract
No abstract record available.
Inventors
- 👤 Joseph H Burckhalter
- 👤 Eldon M Jones
- 👤 Albert L Rawlins
- 👤 Frank H Tendick
- 👤 Walter F Holcomb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:28
CPC Classifications
C; C07; C07D; C07D401/00; C07D401/02; C07D401/10; C07D215/00; C07D215/02; C07D215/16; C07D215/38; C07D215/42; C07D215/44; C07D215/48; C07D215/54; C07D219/00; C07D219/04; C07D219/08; C07D219/10; C07D413/00; C07D413/02; C07D413/10; C07D417/00; C07D417/02; C07D417/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-07-04 | 1953-01-03 | 1953-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-07-04 | 1957-01-03 | 1957-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-07-04 | 1961-01-03 | 1961-07-05 | $7700.00 | Window Closed / Lapsed |