Patent US3060204A successfully refreshed from Google Patents.
US3060204A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Substituted androst-5-enes, salts and methods of preparing the same
Assignee: Wyeth Holdings LLC
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Filing: 1961-12-01
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Granted: 1962-10-23
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Expires: 1981-12-01
Abstract
No abstract record available.
Inventors
- 👤 Edward W Cantrall
- 👤 Gordon Samuel
- 👤 Bernstein Seymour
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:28
CPC Classifications
C; C07; C07J; C07J41/00; C07J41/0033; C07J41/0038
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
26 words
A METHOD OF PREPARING 3B-(DILOWERALKYLAMINOETHOXY)-ANDROST-5-ENE WHICH COMPRISES HEATING ANDROST-5-EN3B-OL WITH B-DILOWERALKYLAMINOETHYL CHLORIDE IN A SOLVENT IN THE PRESENCE OF POTASSIUM T-BUTOXIDE AND RECOVERING SAID COMPOUND THEREFROM.
Claim 2
Independent Claim
26 words
A METHOD OF PREPARING 3B-(DILOWERALKYLAMINOETHOXY)-ANDROST-5-ENE WHICH COMPRISES HEATING ANDROST-5-EN3B-OL WITH B-DILOWERALKYLAMINOETHYL CHLORIDE IN A SOLVENT IN THE PRESENCE OF POTASSIUM T-BUTOXIDE AND RECOVERING SAID COMPOUND THEREFROM.
References Cited (Backward Citations)
US3013009A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-10-22 | 1966-04-23 | 1966-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-22 | 1970-04-23 | 1970-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-22 | 1974-04-23 | 1974-10-23 | $7700.00 | Window Closed / Lapsed |