US3066072A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extract from liquorice root having anti-inflammatory activities
Assignee: Biorex Laboratories Ltd
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Filing: 1958-06-18
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Granted: 1962-11-27
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Expires: 1978-06-18
Abstract
No abstract record available.
Inventors
- 👤 Gottfried Siegfried
- 👤 Baxendale Lily
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:40
CPC Classifications
A; A61; A61K; A61K36/00; A61K36/18; A61K36/185; A61K36/48; A61K36/484
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
75 words
PROCESS FOR THE PRODUCTION OF XANTHOGLABROL, WHEREIN AN ACETIC MOTHER LIQUOR REMAINING AFTER CRYSTALLISATION OF A CRUDE SALT OF GLYCYRRHIZIN FROM AN ACETIC ACID EXTRACT OF LIQUORICE ROOT IS TREATED WITH A NON-HYDROXYLIC ORGANIC SOLVENT, THE PRECIPITATE SO OBTAINED FREED FROM SOLVENT, STIRRED WITH WARM CONCENTRATED HYDROCHLORIC ACID, WATER ADDED AND THE TOTAL PRECIPITATE SO OBTAINED SEPARATED OFF, DRIED EXTRACTED WITH ETHER AND THE ETHER FINALLY REMOVED, WHEREBY XANTHOGLABROL IS OBTAINED AS AN ORANGECOLOURED SOLID.
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) | 1965-11-26 | 1966-05-28 | 1966-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-11-26 | 1970-05-28 | 1970-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-11-26 | 1974-05-28 | 1974-11-27 | $7700.00 | Window Closed / Lapsed |