Patent US2519902A successfully refreshed from Google Patents.
US2519902A
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US
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Process for forming penicillin solution
Assignee: Individual
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Filing: 1949-01-27
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Granted: 1950-08-22
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Expires: 1969-01-27
Abstract
No abstract record available.
Inventors
- 👤 Haller Grace
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:03
CPC Classifications
C; C12; C12P; C12P37/00; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/911; Y10S435/933; Y10S435/936
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
120 words
THE PROCESS OF FORMING A SOLUTION FROM WHICH PENICILLIN CAN BE EXRACTED, WHICH CONSISTS IN FORMING A SOLUTION IN THE PROPORTIONS TO FORM ONE LITER WITH WATER, AND CONTAINING IN ADDITION AROUND ONE GRAM ALTOGETHER OF INORGANIC SULPHATES, AROUND 3 GRAMS OF SODIUM NITRATE, AROUND 40 GRAMS OF LACTOSE, ADDING AROUND 50 GRAMS OF HOMINY MEAL, AUTOCLAVING THE SOLUTION, THEREBY RENDERING IT STERILE AND PRODUCING A NUTRIENT SOLUTION SUPERNATANT WITH RESPECT TO THE MEAL WHICH SINKS TO THE BOTTOM THEN INOCULATING THE NUTRIENT SOLUTION WITH A PENICILLIUM NOTATUM, MAINTAINING THE SOLUTION AT AROUND 20 TO 25*C. WHEREBY THE MOLD GROWS ON THE SURFACE OF THE SOLUTION, AND WHEN THE PH OF THE SOLUTION HAS REACHED 7, DECANTING THE NUTRIENT SOLUTION.
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) | 1953-08-21 | 1954-02-20 | 1954-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-21 | 1958-02-20 | 1958-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-21 | 1962-02-20 | 1962-08-22 | $7700.00 | Window Closed / Lapsed |