US3170916A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing durable saponine containing extracts from horse chestnut and products obtained therefrom
Assignee: Chemische Fabrik Tempelhof Preuss and Temmler
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Filing: 1962-02-19
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Granted: 1965-02-23
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Expires: 1982-02-19
Abstract
No abstract record available.
Inventors
- 👤 Dziengel Kurt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:06
CPC Classifications
A; A61; A61K; A61K36/00; A61K36/18; A61K36/185; A61K36/77; A61K8/00; A61K8/18; A61K8/96; A61K8/97; A61K8/9783; A61K8/9789; A61Q; A61Q19/00; A61Q19/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
43 words
A METHOD FOR PRODUCING DURABLE PERCUTANEOUSLY ADMINISTERABLE EXTRACTS CONTAINING ESCINE FROM HORSE-CHESTNUT SEED SUBSTANCE COMPRISING THE STEP OF REACTING THE NATIVE ESCINE-CONTAINING COMPLEX CONTAINED IN SAID HORSECHESTNUT SEEDS WITH LOWER ALIPHATIC POLYVALENT ALCOHOLS HAVING FROM TWO TO THREE HYDROXYL GROUPS IN THE MOLECULE.
Claim 2
Independent Claim
43 words
A METHOD FOR PRODUCING DURABLE PERCUTANEOUSLY ADMINISTERABLE EXTRACTS CONTAINING ESCINE FROM HORSE-CHESTNUT SEED SUBSTANCE COMPRISING THE STEP OF REACTING THE NATIVE ESCINE-CONTAINING COMPLEX CONTAINED IN SAID HORSECHESTNUT SEEDS WITH LOWER ALIPHATIC POLYVALENT ALCOHOLS HAVING FROM TWO TO THREE HYDROXYL GROUPS IN THE MOLECULE.
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) | 1968-02-23 | 1968-08-24 | 1969-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-23 | 1972-08-24 | 1973-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-23 | 1976-08-24 | 1977-02-23 | $7700.00 | Window Closed / Lapsed |