Patent US2963498A successfully refreshed from Google Patents.
US2963498A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dehydro derivatives of 11-oxygenated 17alpha-(lower alkanoyl)-oxy-9alpha-halopregnane-3, 20-diones
Assignee: GD Searle LLC
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Filing: 1959-05-11
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Granted: 1960-12-06
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Expires: 1979-05-11
Abstract
No abstract record available.
Inventors
- 👤 Clarence G Bergstrom
- 👤 Robert T Nicholson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:38
CPC Classifications
C; C07; C07J; C07J75/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
14 words
A MEMBER SELECTED FROM THE GROUP CONSISTING OF COMPOUNDS REPRESENTED BY THE STRUCTURAL FORMULAE
Claim 2
Dependent Claim
14 words
A MEMBER SELECTED FROM THE GROUP CONSISTING OF COMPOUNDS REPRESENTED BY THE STRUCTURAL FORMULAE
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-06 | 1964-06-06 | 1964-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-06 | 1968-06-06 | 1968-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-06 | 1972-06-06 | 1972-12-06 | $7700.00 | Window Closed / Lapsed |