Patent US2565115A successfully refreshed from Google Patents.
US2565115A
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Method of obtaining a conjugated estrogen preparation
Assignee: ER Squibb and Sons LLC
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Filing: 1948-10-28
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Granted: 1951-08-21
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Expires: 1968-10-28
Abstract
No abstract record available.
Inventors
- 👤 Robert W Bates
- 👤 Cohen Herman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:24
CPC Classifications
A; A61; A61K; A61K38/00; A61K38/16; A61K38/17; A61K38/22; A61K38/24; A61K35/00; A61K35/12; A61K35/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
THE METHOD OF OBTAINING A CONJUGATED-ESTROGEN PREPARATION, WHICH COMPRISES THOROUGHLY MIXING THE COMPONENTS OF A PAIR OF THE GROUP CONSISTING OF (I) DRIED PREGNANT-MARES'' URINE AND AQUEOUS ACETONE, (II) A CONCENTRATE OF PREGNANTMARES'' URINE AND ACETONE, AND (III) A CONCENTRATED AQUEOUS SOLUTION OF DRIED PREGNANT-MARES'' URINE AND ACETONE, THE PROPORTIONS BEING SUCH THAT THE RESULTANT MIXTURE CONSTITUTES A MIXTURE OF THE SOLIDS OF PREGNANT-MARES'' URINE WITH AN ABOUT 75-95% AQUEOUS ACETONE, SEPARATING THE ACETONE PHASE FROM THE AQUEOUS PHASE, AND RECOVERING THE SOLIDS IN THE ACETONE PHASE.
Claim 2
Independent Claim
87 words
THE METHOD OF OBTAINING A CONJUGATED-ESTROGEN PREPARATION, WHICH COMPRISES THOROUGHLY MIXING THE COMPONENTS OF A PAIR OF THE GROUP CONSISTING OF (I) DRIED PREGNANT-MARES'' URINE AND AQUEOUS ACETONE, (II) A CONCENTRATE OF PREGNANTMARES'' URINE AND ACETONE, AND (III) A CONCENTRATED AQUEOUS SOLUTION OF DRIED PREGNANT-MARES'' URINE AND ACETONE, THE PROPORTIONS BEING SUCH THAT THE RESULTANT MIXTURE CONSTITUTES A MIXTURE OF THE SOLIDS OF PREGNANT-MARES'' URINE WITH AN ABOUT 75-95% AQUEOUS ACETONE, SEPARATING THE ACETONE PHASE FROM THE AQUEOUS PHASE, AND RECOVERING THE SOLIDS IN THE ACETONE PHASE.
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) | 1954-08-20 | 1955-02-19 | 1955-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-20 | 1959-02-19 | 1959-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-20 | 1963-02-19 | 1963-08-21 | $7700.00 | Window Closed / Lapsed |