US2637726A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recovery of cerebrosides
Assignee: Armour and Co
•
Filing: 1951-11-02
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Granted: 1953-05-05
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Expires: 1971-11-02
Abstract
No abstract record available.
Inventors
- 👤 Robert H Sifferd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:48
CPC Classifications
A; A61; A61K; A61K35/00; A61K35/12; A61K35/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
IN A PROCESS FOR TREATING NERVE TISSUE TO ISOLATE CEREBROSIDES, THE STEPS OF EXTRACTING SAID NERVE TISSUE WITH ETHYLENE DICHLORIDE TO PRODUCE AN AQUEOUS LAYER AND AN ETHYLENE DICHLORIDE LAYER, SEPARATING THE AQUEOUS LAYER AND ADDING THERETO ETHYLENE DICHLORIDEE, HEATING THE AQUEOUS AND ETHYLENE DICHLORIDE MIXTURE ABOVE 140* F. TO CAUSE THE CEREBROSIDES TO ENTER THE ETHYLENE DICHLORIDE LAYER, AND SEPARATING THE ETHYLENE DICHLORIDE LAYER AND THE CEREBROSIDES THEREFROM.
Claim 2
Dependent Claim
69 words
IN A PROCESS FOR TREATING NERVE TISSUE TO ISOLATE CEREBROSIDES, THE STEPS OF EXTRACTING SAID NERVE TISSUE WITH ETHYLENE DICHLORIDE TO PRODUCE AN AQUEOUS LAYER AND AN ETHYLENE DICHLORIDE LAYER, SEPARATING THE AQUEOUS LAYER AND ADDING THERETO ETHYLENE DICHLORIDEE, HEATING THE AQUEOUS AND ETHYLENE DICHLORIDE MIXTURE ABOVE 140* F. TO CAUSE THE CEREBROSIDES TO ENTER THE ETHYLENE DICHLORIDE LAYER, AND SEPARATING THE ETHYLENE DICHLORIDE LAYER AND THE CEREBROSIDES THEREFROM.
References Cited (Backward Citations)
US2371467A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-05-04 | 1956-11-03 | 1957-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-04 | 1960-11-03 | 1961-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-04 | 1964-11-03 | 1965-05-05 | $7700.00 | Window Closed / Lapsed |