US3694338A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chemical detector
Assignee: Leica Microsystems Inc
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Filing: 1970-04-14
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Granted: 1972-09-26
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Expires: 1990-04-14
Abstract
Abstract A DETECTOR FOR REDUCING AND OXIDIZING AGENTS CARRIED BY FLUIDS WHICH DETECTOR INCLUDES AN ELECTROLYTE, A REPLACEABLE FIRST HALF CELL STRUCTURE CONAINING A METAL AND A METAL SALT IMMERSED IN SAID ELECTROLYTE AND A SECOND HALF CELL STRUCTURE HAVING AN EXPOSED POROUS MEMBER SATURATED WITH SAID ELECTROLYTE AND AN ELECTRODE ON THE OUTER SIDE OF SAID POROUS MEMBER, THE POROUS MEMBER AND ELECTRODE UPON BEING INDIVIDUALLY PLACED IN THE PATH OF THE FLUID WILL CAUSE A POTENTIAL TO BE DEVELOPED BETWEEN THE ELECTRODES WHICH IS PROPORTIONAL TO THE AMOUNT OF CHEMICAL IN SAID FLUID. THE DETECTOR IS ESPECIALLY USE FOR FOR TE DETECTION OF HYDRAZINE IN BOILER FEED WATER.
Inventors
- 👤 Irving R Weingarten
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:16
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/416; G01N27/4166; G01N27/4168
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-09-26 | 1976-03-27 | 1976-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-26 | 1980-03-27 | 1980-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-26 | 1984-03-27 | 1984-09-26 | $7700.00 | Window Closed / Lapsed |