US3051640A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Amino acid separation process
Assignee: Armour Pharmaceutical Co
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Filing: 1959-09-21
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Granted: 1962-08-28
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Expires: 1979-09-21
Abstract
No abstract record available.
Inventors
- 👤 James T Traxler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:41
CPC Classifications
B; B01; B01D; B01D61/00; B01D61/42; B01D61/44; B01D2311/00; B01D2311/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
168 words
IN A PROCESS OF SEPARATING AMINO ACIDS BY ELECTRODIALYSIS, THE STEPS COMPRISING MAINTAINING A POTENTIAL DIFFERENCE ACROSS A SERIES OF AQUEOUS SOLUTIONS OF IONIZABLE COMPOUNDS CONTAINED IN COMPARTMENTS SEPARATED ALTERNATELY BY SELECTIVE ANION AND CATION PERMEABLE MEMBRANES BY USING AN ANODE AND A CATHODE, INTRODUCING AN AMINO ACID MIXTURE INTO A CENTRAL COMPARTMENT, ADJUSTING THE PH OF THE AMINO ACID MIXTURE TO A PH OF ABOUT THE PH OF THE ISOELECTRIC POINT OF AT LEAST ONE OF THE AMINO ACIDS IN THE MIXTURE, MAINTAINING THE SOLUTION IN THE COMPARTMENT WHICH IS POSITIONED TOWARDS SAID ANODE AND ADJACENT TO THE CENTRAL COMPARTMENT AND SEPARATED THEREFROM BY A SELECTIVE ANIOM PERMEABLE MEMBRANE AT A PH SUBSTANTIALLY HIGHER THAN THE PH OF THE MIXTURE IN THE CENTRAL COMPARTMENT AND MAINTAINING THE SOLUTION IN THE COMPARTMENT WHICH IS POSITIONED TOWARDS SAID CATHODE AND ADJACENT TO THE CENTRAL COMPARTMENT AND SEPARATED THEREFROM BY A SELECTIVE CATION PERMEABLE MEMBRANE AT A PH SUBSTANTIALLY LOWER THAN THE PH OF THE SOLUTION IN THE CENTRAL COMPARTMENT.
Claim 2
Dependent Claim
168 words
IN A PROCESS OF SEPARATING AMINO ACIDS BY ELECTRODIALYSIS, THE STEPS COMPRISING MAINTAINING A POTENTIAL DIFFERENCE ACROSS A SERIES OF AQUEOUS SOLUTIONS OF IONIZABLE COMPOUNDS CONTAINED IN COMPARTMENTS SEPARATED ALTERNATELY BY SELECTIVE ANION AND CATION PERMEABLE MEMBRANES BY USING AN ANODE AND A CATHODE, INTRODUCING AN AMINO ACID MIXTURE INTO A CENTRAL COMPARTMENT, ADJUSTING THE PH OF THE AMINO ACID MIXTURE TO A PH OF ABOUT THE PH OF THE ISOELECTRIC POINT OF AT LEAST ONE OF THE AMINO ACIDS IN THE MIXTURE, MAINTAINING THE SOLUTION IN THE COMPARTMENT WHICH IS POSITIONED TOWARDS SAID ANODE AND ADJACENT TO THE CENTRAL COMPARTMENT AND SEPARATED THEREFROM BY A SELECTIVE ANIOM PERMEABLE MEMBRANE AT A PH SUBSTANTIALLY HIGHER THAN THE PH OF THE MIXTURE IN THE CENTRAL COMPARTMENT AND MAINTAINING THE SOLUTION IN THE COMPARTMENT WHICH IS POSITIONED TOWARDS SAID CATHODE AND ADJACENT TO THE CENTRAL COMPARTMENT AND SEPARATED THEREFROM BY A SELECTIVE CATION PERMEABLE MEMBRANE AT A PH SUBSTANTIALLY LOWER THAN THE PH OF THE SOLUTION IN THE CENTRAL COMPARTMENT.
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) | 1965-08-27 | 1966-02-26 | 1966-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-27 | 1970-02-26 | 1970-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-27 | 1974-02-26 | 1974-08-28 | $7700.00 | Window Closed / Lapsed |