US2615016A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of extracting cardioactive glycosides from boviea volubilis
Assignee: Abbott GmbH and Co KG
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Filing: 1951-03-15
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Granted: 1952-10-21
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Expires: 1971-03-15
Abstract
No abstract record available.
Inventors
- 👤 Schenck Gerhard
- 👤 Rattinger Fred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:44
CPC Classifications
A; A61; A61K; A61K36/00; A61K36/18; A61K36/88; A61K36/896
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
A METHOD OF PRODUCING CRYSTALLINE CARDIOACTIVE GLYCOSIDES FROM BOVIEA VOLUBILIS COMPRISING REPEATEDLY EXTRACTING, EACH TIME FOR A SHORT PERIOD OF TIME, DRIED AND PULVERIZED BULBS OF BOVIEA VOLUBILIS WITH METHANOL, CONCENTRATING THE COMBINED EXTRACTS, PRECIPITATING THE MUCILAGINOUS SBUSTANCES PRESENT IN SAID CONCENTRATE BY THE ADDITION OF ACETONE, SUBJECTING THE METHANOL-ACETONE SOLUTION OF THE GLYCOSIDES OBTAINED THEREBY TO ADSORPTION ON ALUMINUM OXIDE AND ELUTING THEREFROM THE GLYCOSIDES SEPARATELY.
Claim 2
Independent Claim
67 words
A METHOD OF PRODUCING CRYSTALLINE CARDIOACTIVE GLYCOSIDES FROM BOVIEA VOLUBILIS COMPRISING REPEATEDLY EXTRACTING, EACH TIME FOR A SHORT PERIOD OF TIME, DRIED AND PULVERIZED BULBS OF BOVIEA VOLUBILIS WITH METHANOL, CONCENTRATING THE COMBINED EXTRACTS, PRECIPITATING THE MUCILAGINOUS SBUSTANCES PRESENT IN SAID CONCENTRATE BY THE ADDITION OF ACETONE, SUBJECTING THE METHANOL-ACETONE SOLUTION OF THE GLYCOSIDES OBTAINED THEREBY TO ADSORPTION ON ALUMINUM OXIDE AND ELUTING THEREFROM THE GLYCOSIDES SEPARATELY.
References Cited (Backward Citations)
DE656260C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-10-21 | 1956-04-21 | 1956-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-21 | 1960-04-21 | 1960-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-21 | 1964-04-21 | 1964-10-21 | $7700.00 | Window Closed / Lapsed |