US2864745A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glaucarubin amebicide
Assignee: Merck and Co Inc
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Filing: 1956-11-14
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Granted: 1958-12-16
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Expires: 1976-11-14
Abstract
No abstract record available.
Inventors
- 👤 Henry M Shafer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:19
CPC Classifications
A; A61; A61K; A61K36/00; A61K36/18; A61K36/185; Y; Y02; Y02A; Y02A50/00; Y02A50/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
169 words
THE COMPOUND GLAUCARUBIN, AN ORGANIC SUBSTANCECE ADAPTED FOR THE THERAPEUTIC TREATMENT OF AMEBIASIS, HAVING THE EMPIRICAL FORMULA C25H36O10, FORMING A DI-HYDRO DERIVATIVE UPON HYDROGENATION, FORMING A HEXAACETYL DERIVATIVE HAVING A MELTING POINT OF 162*C. AND OPTICAL ROTATION IN PYRIDINE OF +49*, AND A PENTAACETYL MONOHYDROXY DERIVATIVE HAVING A MELTING POINT OF 227*C AND OPTICAL ROTATION IN PYRIDINE OF +26*, AND WHEN IN CRYSTALLINE FORM BEING FURTHER CHARACTERIZED AS EXHIBITING CHARACTERISTIC INFRA-RED ABSORPTION AT THE FOLLOWING WAVE LENGTHS EXPRESSED IN MICRONS: 2.93, 2.99, 5.69, 5.78, 5.99, 7.43, 7.53, 7.63, 7.80, 7.89, 8.18, 8.43, 8.72, 8.80, 8.90, 8.98, 9.14, 9.55, 9.69, 9.81, 10.02, 10.13, 10.38, 10.51, 10.83, 10.98, 11.18, 11.39, 11.91, 12.07, 12,27, 12.38, 12.58, 12.82, 13.22, AND 13.81 AS SHOWN IN THE ACCOMPANYING DRAWING, MELTING WITH DECOMPOSITION ATN AT 262-263*C., EXHIBITING OPTICAL ROTATION IN PYRIDINE (1%) OF +45* AND IN METHANOL (0.3%) OF +89*, AND HAVING SOLUBILITIES EXPRESSED IN MG./ML. AS FOLLOWS: >3.5 AND <4.8 IN ACTEIC ACID; >20.8 AND <26.2 IN 1% SODIUM CARBONATE SOLUTION; AND >200 IN PYRIDINE.
Claim 2
Dependent Claim
169 words
THE COMPOUND GLAUCARUBIN, AN ORGANIC SUBSTANCECE ADAPTED FOR THE THERAPEUTIC TREATMENT OF AMEBIASIS, HAVING THE EMPIRICAL FORMULA C25H36O10, FORMING A DI-HYDRO DERIVATIVE UPON HYDROGENATION, FORMING A HEXAACETYL DERIVATIVE HAVING A MELTING POINT OF 162*C. AND OPTICAL ROTATION IN PYRIDINE OF +49*, AND A PENTAACETYL MONOHYDROXY DERIVATIVE HAVING A MELTING POINT OF 227*C AND OPTICAL ROTATION IN PYRIDINE OF +26*, AND WHEN IN CRYSTALLINE FORM BEING FURTHER CHARACTERIZED AS EXHIBITING CHARACTERISTIC INFRA-RED ABSORPTION AT THE FOLLOWING WAVE LENGTHS EXPRESSED IN MICRONS: 2.93, 2.99, 5.69, 5.78, 5.99, 7.43, 7.53, 7.63, 7.80, 7.89, 8.18, 8.43, 8.72, 8.80, 8.90, 8.98, 9.14, 9.55, 9.69, 9.81, 10.02, 10.13, 10.38, 10.51, 10.83, 10.98, 11.18, 11.39, 11.91, 12.07, 12,27, 12.38, 12.58, 12.82, 13.22, AND 13.81 AS SHOWN IN THE ACCOMPANYING DRAWING, MELTING WITH DECOMPOSITION ATN AT 262-263*C., EXHIBITING OPTICAL ROTATION IN PYRIDINE (1%) OF +45* AND IN METHANOL (0.3%) OF +89*, AND HAVING SOLUBILITIES EXPRESSED IN MG./ML. AS FOLLOWS: >3.5 AND <4.8 IN ACTEIC ACID; >20.8 AND <26.2 IN 1% SODIUM CARBONATE SOLUTION; AND >200 IN PYRIDINE.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-12-15 | 1962-06-16 | 1962-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-15 | 1966-06-16 | 1966-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-15 | 1970-06-16 | 1970-12-16 | $7700.00 | Window Closed / Lapsed |