Patent US2774713A successfully refreshed from Google Patents.
US2774713A
Expired / Lapsed
US
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Process for the recovery of saponins and sapogenins from vegetable matter
Assignee: Merck Sharp & Dohme LLC
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Filing: 1952-10-06
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Granted: 1956-12-18
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Expires: 1972-10-06
Abstract
No abstract record available.
Inventors
- 👤 David H Gould
- 👤 Emanuel B Hershberg
- 👤 Clayton Temple
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:00
CPC Classifications
C; C07; C07J; C07J71/00; C07J75/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
IN A PROCESS FOR THE RECOVERY OF DIOSCIN SAPONIN AND DIOSGENIN FROM DIOSCOREA ROOTS, THE STEPS WHICH COMPRISE COMMINUTING THE ROOTS, AND SUBJECTING THE RESULTING PULP TO AUTO-TRANSFORMATION IN ITS NATURAL STATE AND IN THE ABSENCE OF ADDED INHIBITING MATERIAL UNTIL THE CONTENT OF EXTRACATABLE SAPONIN AND DISOGENIN HAS MARKEDLY INCREASED OVER THE QUANTITY OBTAINABLE FROM THE FRESH ROOTS.
Claim 2
Dependent Claim
59 words
IN A PROCESS FOR THE RECOVERY OF DIOSCIN SAPONIN AND DIOSGENIN FROM DIOSCOREA ROOTS, THE STEPS WHICH COMPRISE COMMINUTING THE ROOTS, AND SUBJECTING THE RESULTING PULP TO AUTO-TRANSFORMATION IN ITS NATURAL STATE AND IN THE ABSENCE OF ADDED INHIBITING MATERIAL UNTIL THE CONTENT OF EXTRACATABLE SAPONIN AND DISOGENIN HAS MARKEDLY INCREASED OVER THE QUANTITY OBTAINABLE FROM THE FRESH ROOTS.
References Cited (Backward Citations)
US2069687A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-12-18 | 1960-06-18 | 1960-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-18 | 1964-06-18 | 1964-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-18 | 1968-06-18 | 1968-12-18 | $7700.00 | Window Closed / Lapsed |