Patent US2824874A successfully refreshed from Google Patents.
US2824874A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reserpic acid and derivatives
Assignee: —
•
Filing: —
•
Granted: 1958-02-25
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Expires: 1975-02-25
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:46
CPC Classifications
C; C07; C07D; C07D459/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
9 words
RESERPIC ADIC ALKYL ESTERS WITH A FREE HYDROXYL GROUP.
Claim 2
Dependent Claim
9 words
RESERPIC ADIC ALKYL ESTERS WITH A FREE HYDROXYL GROUP.
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) | 1961-02-24 | 1961-08-26 | 1962-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-24 | 1965-08-26 | 1966-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-24 | 1969-08-26 | 1970-02-25 | $7700.00 | Window Closed / Lapsed |