US3089814A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of a concentrate of active substance from senna
Assignee: A Natterman und Cie GmbH
•
Filing: 1959-02-26
•
Granted: 1963-05-14
•
Expires: 1979-02-26
Abstract
No abstract record available.
Inventors
- 👤 Blaich Fritz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:19
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/70; A61K36/00; A61K36/18; A61K36/185; A61K36/48; A61K36/482
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
57 words
A PROCESS FOR THE PRODUCTION OF A CONCENTRATE OF ACTIVE SUBSTANCE FROM SENNA WHICH CONSISTS ESSENTIALLY IN THE FOLLOWING STEPS: THE SENNA IS EXTRACTED IN THE COLD WITH AN ALKALINE REACTING AQUEOUS SOLUTION CONTAINING ALKALINE EARTH METAL IONS, THE LIQUID EXTRACTED IS CONCENTRATED IN VACUO AND THE PRECIPITATED CONCENTRATE IS SEPARATED AND DRIED WITHOUT APPLICATION OF HEAT.
Claim 2
Dependent Claim
57 words
A PROCESS FOR THE PRODUCTION OF A CONCENTRATE OF ACTIVE SUBSTANCE FROM SENNA WHICH CONSISTS ESSENTIALLY IN THE FOLLOWING STEPS: THE SENNA IS EXTRACTED IN THE COLD WITH AN ALKALINE REACTING AQUEOUS SOLUTION CONTAINING ALKALINE EARTH METAL IONS, THE LIQUID EXTRACTED IS CONCENTRATED IN VACUO AND THE PRECIPITATED CONCENTRATE IS SEPARATED AND DRIED WITHOUT APPLICATION OF HEAT.
References Cited (Backward Citations)
US2350295A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-05-13 | 1966-11-12 | 1967-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-13 | 1970-11-12 | 1971-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-13 | 1974-11-12 | 1975-05-14 | $7700.00 | Window Closed / Lapsed |