US2774714A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the extraction of sapogenins from plant materials
Assignee: Individual
•
Filing: 1952-10-10
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Granted: 1956-12-18
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Expires: 1972-10-10
Abstract
No abstract record available.
Inventors
- 👤 Emanuel B Hershberg
- 👤 David H Gould
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:37
CPC Classifications
C; C07; C07J; C07J71/00; C07J75/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
PROCESS FOR THE EXTRACTION OF STEROID SAPOGENINS FROM STEROIDAL SAPONIN-BEARING PLANT MATERIAL OF A FAMILY OF THE GROUP CONSISTING OF LILACEAE, AMERILLIDACEAE, AND DIOSCOREACEAE, WHICH COMPRISES SUBJECTING THE PLANT MATERIAL TO THE ACTION OF AQUEOUS NON-OXIDIZING ACID TO EFFECT HYDROLUSIS OF THE SAPONINS CONTAINED THEREIN AND FORM THE WATER-INSOLUBLE STEROIDAL SAPOGENIN, SUBSEQUENTLY SEPARATING THE ACID SOLUTION FROM THE INSOLUBLE MATERIAL CONTAINING THE SAID SAPOGENIN AND THE FIBROUS RESIDUE OF THE PLANT MATERIAL, AND EXTRACTINGTHE SAID INSOLUBLE MATERIAL WITH A SUBSTANTIALLY WATER-IMMISCIBLE ORGANIC SOLVENT FOR THE SAPOGENIN.
Claim 2
Dependent Claim
86 words
PROCESS FOR THE EXTRACTION OF STEROID SAPOGENINS FROM STEROIDAL SAPONIN-BEARING PLANT MATERIAL OF A FAMILY OF THE GROUP CONSISTING OF LILACEAE, AMERILLIDACEAE, AND DIOSCOREACEAE, WHICH COMPRISES SUBJECTING THE PLANT MATERIAL TO THE ACTION OF AQUEOUS NON-OXIDIZING ACID TO EFFECT HYDROLUSIS OF THE SAPONINS CONTAINED THEREIN AND FORM THE WATER-INSOLUBLE STEROIDAL SAPOGENIN, SUBSEQUENTLY SEPARATING THE ACID SOLUTION FROM THE INSOLUBLE MATERIAL CONTAINING THE SAID SAPOGENIN AND THE FIBROUS RESIDUE OF THE PLANT MATERIAL, AND EXTRACTINGTHE SAID INSOLUBLE MATERIAL WITH A SUBSTANTIALLY WATER-IMMISCIBLE ORGANIC SOLVENT FOR THE SAPOGENIN.
References Cited (Backward Citations)
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 |