Patent US2214457A successfully refreshed from Google Patents.
US2628022A
Expired / Lapsed
US
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Method fob recovering protein from
Assignee: —
•
Filing: —
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Granted: 1953-02-10
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Expires: 1970-02-10
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:55
CPC Classifications
C; C07; C07K; C07K1/00; C07K1/14; C07K1/30; B; B01; B01D; B01D21/00; B01D21/26; B01D21/262; B04; B04B; B04B1/00; B04B1/20; C07K1/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
IN THE PRODUCTION OF SUBSTANTIALLY PURE PROTEIN FROM A LIQUID CONTAINING DISSOLVED PROTEIN AND UNDISSOLVED IMPURITIES, BY COARSE-STRAINING THE LIQUID TO SEPARATE THE RELATIVELY LARGE SOLID IMPURITIES THEREFROM, SUBJECTING THE STRAINED LIQUID TO A FIRST AND COARSE CENTRIFUGAL SEPARATION IN WHICH THE MAIN PART OF THE SUSPENDED IMPURITIES ARE REMOVED FROM THE LIQUID, AND DISCHARGING A CONCENTRATE OF SUSPENDED IMPURITIES FROM SAID CENTRIFUGAL SEPARATION, THE IMPROVEMENT WHICH COMPRISES SUBJECTING THE SEPARTED LIQUID FROM SAID FIRST CENTRIFUGAL SEPARATION TO A SECOND AND FINE CENTRIFUGAL SEPARATION IN WHICH ADDITIONAL SOLID IMPURITIES ARE REMOVED FROM THE LIQUID, DISCHARGING SAID LAST IMPURITIES FROM THE SECOND CENTRIFUGAL SEPARATION IN THE FORM OF A CONCENTRATE AS A HEAVIER COMPONENT WHILE DISCHARGING THE LIQUID AS A LIGHTER COMPONENT FROM SAID SECOND SEPARATION, MIXING SAID DISCHARGED
Claim 2
Dependent Claim
128 words
IN THE PRODUCTION OF SUBSTANTIALLY PURE PROTEIN FROM A LIQUID CONTAINING DISSOLVED PROTEIN AND UNDISSOLVED IMPURITIES, BY COARSE-STRAINING THE LIQUID TO SEPARATE THE RELATIVELY LARGE SOLID IMPURITIES THEREFROM, SUBJECTING THE STRAINED LIQUID TO A FIRST AND COARSE CENTRIFUGAL SEPARATION IN WHICH THE MAIN PART OF THE SUSPENDED IMPURITIES ARE REMOVED FROM THE LIQUID, AND DISCHARGING A CONCENTRATE OF SUSPENDED IMPURITIES FROM SAID CENTRIFUGAL SEPARATION, THE IMPROVEMENT WHICH COMPRISES SUBJECTING THE SEPARTED LIQUID FROM SAID FIRST CENTRIFUGAL SEPARATION TO A SECOND AND FINE CENTRIFUGAL SEPARATION IN WHICH ADDITIONAL SOLID IMPURITIES ARE REMOVED FROM THE LIQUID, DISCHARGING SAID LAST IMPURITIES FROM THE SECOND CENTRIFUGAL SEPARATION IN THE FORM OF A CONCENTRATE AS A HEAVIER COMPONENT WHILE DISCHARGING THE LIQUID AS A LIGHTER COMPONENT FROM SAID SECOND SEPARATION, MIXING SAID DISCHARGED
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-02-10 | 1956-08-11 | 1957-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-02-10 | 1960-08-11 | 1961-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-02-10 | 1964-08-11 | 1965-02-10 | $7700.00 | Window Closed / Lapsed |