Patent US2990339A successfully refreshed from Google Patents.
US2990339A
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Apparatus for automatically testing the biological processes according to the turbidity of the medium
Assignee: Fondazione Emanuele Paterno
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Filing: 1959-06-29
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Granted: 1961-06-27
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Expires: 1979-06-29
Abstract
No abstract record available.
Inventors
- 👤 Frank Marco
- 👤 Gori Gio Batta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:31
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/75; G01N21/77; G01N21/82; Y; Y10; Y10S; Y10S435/00; Y10S435/808
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
149 words
A DEVICE FOR CONTROLLING THE FEED OF LIQUID TO A SOLUTION IN WHICH A TURBIDITY-CAUSING BIOLOGICAL PROCESS TAKES PLACE, RESPONSIVE TO VARIATIONS IN THE TURBIDITY OF SAID SOLUTION DURING SAID PROCESS, SAID DEVICE COMPRISING A FLASK COMPRISING MEANS FOR FEEDING FRESH LIQUID THERETO AND OVERFLOW MEANS FOR DISCHARGING PROCESSED SOLUTION THEREFROM, ELECTROMAGNETICALLY CONTROLLED VALVE MEANS ASSOCIATED WITH SAID LIQUID-FEEDING MEANS, STIRRING MEANS FOR AGITATING THE CONTENTS OF SAID FLASK AND MAINTAINING AN EVEN TURBIDITY THEREIN, AN ELECTRONIC CIRCUIT COMPRISING A FIRST AND A SECOND PHOTOELECTRIC CELL, A LIGHT SOURCE SO DISPOSED AS TO ILLUMINATE SAID FIRST CELL DIRECTLY AND SAID SECOND CELL THROUGH THE EVENLY TURBID SOLUTION IN SAID FLASK, ADJUSTABLE SLIT MEANS INTERPOSED IN THE PATH OF LIGHT FROM SAID LIGHT SOURCE TO SAID FIRST CELL AND ADAPTED FOR ADJUSTING THE ILLUMINATION OF SAID FIRST CELL TO A VALUE CORRESPONDING TO DETERMINED TURBIDITY IN SAID SOLUTION, SAID ELECTRONIC
Claim 2
Independent Claim
149 words
A DEVICE FOR CONTROLLING THE FEED OF LIQUID TO A SOLUTION IN WHICH A TURBIDITY-CAUSING BIOLOGICAL PROCESS TAKES PLACE, RESPONSIVE TO VARIATIONS IN THE TURBIDITY OF SAID SOLUTION DURING SAID PROCESS, SAID DEVICE COMPRISING A FLASK COMPRISING MEANS FOR FEEDING FRESH LIQUID THERETO AND OVERFLOW MEANS FOR DISCHARGING PROCESSED SOLUTION THEREFROM, ELECTROMAGNETICALLY CONTROLLED VALVE MEANS ASSOCIATED WITH SAID LIQUID-FEEDING MEANS, STIRRING MEANS FOR AGITATING THE CONTENTS OF SAID FLASK AND MAINTAINING AN EVEN TURBIDITY THEREIN, AN ELECTRONIC CIRCUIT COMPRISING A FIRST AND A SECOND PHOTOELECTRIC CELL, A LIGHT SOURCE SO DISPOSED AS TO ILLUMINATE SAID FIRST CELL DIRECTLY AND SAID SECOND CELL THROUGH THE EVENLY TURBID SOLUTION IN SAID FLASK, ADJUSTABLE SLIT MEANS INTERPOSED IN THE PATH OF LIGHT FROM SAID LIGHT SOURCE TO SAID FIRST CELL AND ADAPTED FOR ADJUSTING THE ILLUMINATION OF SAID FIRST CELL TO A VALUE CORRESPONDING TO DETERMINED TURBIDITY IN SAID SOLUTION, SAID ELECTRONIC
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) | 1964-06-26 | 1964-12-26 | 1965-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-26 | 1968-12-26 | 1969-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-26 | 1972-12-26 | 1973-06-27 | $7700.00 | Window Closed / Lapsed |