US2547231A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electroosmotic isolation of streptomycin
Assignee: ROGER SELIGMAN
•
Filing: 1948-03-10
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Granted: 1951-04-03
•
Expires: 1968-03-10
Abstract
No abstract record available.
Inventors
- 👤 Jack D Sartakoff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:31
CPC Classifications
B; B01; B01D; B01D61/00; B01D61/42; B01D61/422
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
THE METHOD OF ISOLATING STREPTOMYCIN WHICH COMPRISES: INTRODUCING AN AQUEOUS SUSPENSION OF CARBON WITH ADSORBED STREPTOMYCIN THEREON INTO THE CENTER CHAMBER OF AN ELECTROLYTIC CELL EQUIPPED WITH OSMOTIC DIAPHRAGMS SPACE FROM ONE ANOTHER AND ARRANGED BETWEEN AND IN SPACED RELATION TO A CARBONACEOUS ANODE AND A CARBONACEOUS CATHODE, INTRODUCING ACIDIFIED WATER INTO THE ANODIC AND CATHODIC CHAMBERS OF SAID ELECTROLYTIC CELL, PASSING THROUGH THE CELL ELECTRIC
Claim 2
Independent Claim
66 words
THE METHOD OF ISOLATING STREPTOMYCIN WHICH COMPRISES: INTRODUCING AN AQUEOUS SUSPENSION OF CARBON WITH ADSORBED STREPTOMYCIN THEREON INTO THE CENTER CHAMBER OF AN ELECTROLYTIC CELL EQUIPPED WITH OSMOTIC DIAPHRAGMS SPACE FROM ONE ANOTHER AND ARRANGED BETWEEN AND IN SPACED RELATION TO A CARBONACEOUS ANODE AND A CARBONACEOUS CATHODE, INTRODUCING ACIDIFIED WATER INTO THE ANODIC AND CATHODIC CHAMBERS OF SAID ELECTROLYTIC CELL, PASSING THROUGH THE CELL ELECTRIC
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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) | 1954-04-02 | 1954-10-02 | 1955-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-02 | 1958-10-02 | 1959-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-02 | 1962-10-02 | 1963-04-03 | $7700.00 | Window Closed / Lapsed |