Patent US2891192A successfully refreshed from Google Patents.
Patent US2805976A successfully refreshed from Google Patents.
US2805976A
Expired / Lapsed
US
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Preparation of adrenocorticotrophin by adsorption on starch
Assignee: Armour and Co
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Filing: 1953-12-16
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Granted: 1957-09-10
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Expires: 1973-12-16
Abstract
No abstract record available.
Inventors
- 👤 Irby M Bunding
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:45
CPC Classifications
A; A61; A61K; A61K38/00; A61K38/16; A61K38/17; A61K38/33; A61K38/35
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
A PROCESS FOR PREPARING AN ADRENOCORTICOTROPHIN SUBSTANCE FROM A SOLUTON CONTAINING THE SUBSTANCE COMPRISING ADSORBING SAID SUBSTANCE ON STARCH AT A PH ABOVE 3.0 AND ELUTING THE ABSORBED SUBSTANCE AT A PH WHICH IS LOWER THAN THE ADSORPTION PH AND WHICH IS WITHIN THE PH RANGE FROM 1.0 TO 4.5.
Claim 2
Dependent Claim
50 words
A PROCESS FOR PREPARING AN ADRENOCORTICOTROPHIN SUBSTANCE FROM A SOLUTON CONTAINING THE SUBSTANCE COMPRISING ADSORBING SAID SUBSTANCE ON STARCH AT A PH ABOVE 3.0 AND ELUTING THE ABSORBED SUBSTANCE AT A PH WHICH IS LOWER THAN THE ADSORPTION PH AND WHICH IS WITHIN THE PH RANGE FROM 1.0 TO 4.5.
References Cited (Backward Citations)
US2669536A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-09 | 1961-03-11 | 1961-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-09 | 1965-03-11 | 1965-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-09 | 1969-03-11 | 1969-09-10 | $7700.00 | Window Closed / Lapsed |