Patent US3159622A successfully refreshed from Google Patents.
US3159622A
Expired / Lapsed
US
⏱️ 0.0 years remaining
17 alpha-(2-carboxyethyl)-17 belta-hydroxy-6-nitroandrost-4-en-3-one gamma-lactones
Assignee: GD Searle LLC
•
Filing: 1963-03-22
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Granted: 1964-12-01
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Expires: 1983-03-22
Abstract
No abstract record available.
Inventors
- 👤 Robert B Garland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:40
CPC Classifications
C; C07; C07J; C07J21/00; C07J21/001; C07J21/003; C07J41/00; C07J41/0005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
2 words
17A-(2-CARBOXYETHYL)-17B-HYDROXY-6B-NITROANDROST4-EN-3-ONE $-LACTONE.
Claim 2
Dependent Claim
2 words
17A-(2-CARBOXYETHYL)-17B-HYDROXY-6B-NITROANDROST4-EN-3-ONE $-LACTONE.
References Cited (Backward Citations)
US2705712A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-12-01 | 1968-06-01 | 1968-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-12-01 | 1972-06-01 | 1972-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-12-01 | 1976-06-01 | 1976-12-01 | $7700.00 | Window Closed / Lapsed |