US3068229A
Expired / Lapsed
US
⏱️ 0.0 years remaining
4-(17beta-androstanyl)derivatives of gamma-valerolactones and gamma-butyrolactones, intermediates therefor, and their process of preparation
Assignee: Pfizer Italia SRL
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Filing: 1961-04-14
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Granted: 1962-12-11
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Expires: 1981-04-14
Abstract
No abstract record available.
Inventors
- 👤 Camerino Bruno
- 👤 Valcavi Umberto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:55
CPC Classifications
C; C07; C07J; C07J19/00; C07J5/00; C07J75/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
4 words
LACTONE OF 4-HYDROXY-4-(3B-HYDROXY-5-ANDROSTEN17B-YL)-2-PENTENOIC ACID.
Claim 2
Dependent Claim
4 words
LACTONE OF 4-HYDROXY-4-(3B-HYDROXY-5-ANDROSTEN17B-YL)-2-PENTENOIC ACID.
Claim 3
Dependent Claim
16 words
A PROCESS FOR PREPARING 4-(3B-HYDROXY-17B-ANDROSTANYL) DERIVATIVES OF THE Y-VALEROLACTONES (AND THE HOMOLOGOUS Y-BUTYROLACTONES) HAVING THE FORMULA:
Claim 4
Dependent Claim
16 words
A PROCESS FOR PREPARING 4-(3B-HYDROXY-17B-ANDROSTANYL) DERIVATIVES OF THE Y-VALEROLACTONES (AND THE HOMOLOGOUS Y-BUTYROLACTONES) HAVING THE FORMULA:
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) | 1965-12-10 | 1966-06-11 | 1966-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-10 | 1970-06-11 | 1970-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-10 | 1974-06-11 | 1974-12-11 | $7700.00 | Window Closed / Lapsed |