Patent US2767199A successfully refreshed from Google Patents.
US2767199A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ring a halogenated allopregnanes
Assignee: Syntex SA
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Filing: 1953-03-06
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Granted: 1956-10-16
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Expires: 1973-03-06
Abstract
No abstract record available.
Inventors
- 👤 Djerassi Carl
- 👤 Rosenkranz George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:41
CPC Classifications
C; C07; C07J; C07J5/00; C07J75/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
33 words
A NEW COMPOUND SELECTED FROM THE CLASS CONSISTING OF 2-BROMO-ALLOPREGNAN-11A, 17A-DIOL-3,20-DIONE, LOWER FATTY ACID ESTERS THEREOF, BENZOIC ACID ESTERS THEREOF AND 2,4-DIBROMO-ALLOPREGNAN-11A, 17A-DIOL-3,20-DIONE, LOWER FATTY ACID ESTERS THEREOF AND BENZOIC ACID ESTERS THEREOF.
Claim 2
Dependent Claim
33 words
A NEW COMPOUND SELECTED FROM THE CLASS CONSISTING OF 2-BROMO-ALLOPREGNAN-11A, 17A-DIOL-3,20-DIONE, LOWER FATTY ACID ESTERS THEREOF, BENZOIC ACID ESTERS THEREOF AND 2,4-DIBROMO-ALLOPREGNAN-11A, 17A-DIOL-3,20-DIONE, LOWER FATTY ACID ESTERS THEREOF AND BENZOIC ACID ESTERS THEREOF.
References Cited (Backward Citations)
US2602769A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-10-16 | 1960-04-16 | 1960-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-16 | 1964-04-16 | 1964-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-16 | 1968-04-16 | 1968-10-16 | $7700.00 | Window Closed / Lapsed |