Patent US4304240A successfully refreshed from Google Patents.
US2651612A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Amperometric analyzer
Assignee: Mathieson Chemical Corp
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Filing: 1948-02-04
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Granted: 1953-09-08
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Expires: 1968-02-04
Abstract
No abstract record available.
Inventors
- 👤 John F Haller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:32
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/403; G01N27/404; G01N27/4045
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
AN INSTRUMENT FOR DETECTING AND MEASURING CONCENTRATIONS OF OXIDIZING AND REDUCING GASES IN GASEOUS MIXTURES WHICH COMPRISES AN ELONGATED HOLLOW RECEPTACLE CONFINING A RESERVIOR OF ELECTROLYTE, A TRANSVERSE PORTION OF WHICH HOLLOW RECEPTACLE IS PERMEABLE WITH RESPECT TO THE ELECTROLYTE, AN ELECTRODE DISPOSED WITHIN THE HOLLOW RECEPTACLE SPACED FROM THE INNER WALLS THEREOF EXTENDING WITHIN THE PERMEABLE PORTION OF THE RECEPTACLE AND SURROUNDING BY THE RESERVOIR OF ELECTROLYTE, A SECOND ELECTRODE HAVING THE FROM OF A WIRE WOUND IN SPACED TURNS ABOUT THE OUTER SURFACE OF THE PERMEABLE PORTION OF THE RECEPTACLE, AND AN AMMETER DIRECTLY CONNECTED BETWEEN THE TWO ELECTRODES COMPLETING AN ELECTRICAL CIRCUIT THROUGH THE ELECTRODE AND ELECTROLYTE HAVING NO EXTERNAL SOURCE OF ELECTRICALLY ENERGY.
Claim 2
Dependent Claim
117 words
AN INSTRUMENT FOR DETECTING AND MEASURING CONCENTRATIONS OF OXIDIZING AND REDUCING GASES IN GASEOUS MIXTURES WHICH COMPRISES AN ELONGATED HOLLOW RECEPTACLE CONFINING A RESERVIOR OF ELECTROLYTE, A TRANSVERSE PORTION OF WHICH HOLLOW RECEPTACLE IS PERMEABLE WITH RESPECT TO THE ELECTROLYTE, AN ELECTRODE DISPOSED WITHIN THE HOLLOW RECEPTACLE SPACED FROM THE INNER WALLS THEREOF EXTENDING WITHIN THE PERMEABLE PORTION OF THE RECEPTACLE AND SURROUNDING BY THE RESERVOIR OF ELECTROLYTE, A SECOND ELECTRODE HAVING THE FROM OF A WIRE WOUND IN SPACED TURNS ABOUT THE OUTER SURFACE OF THE PERMEABLE PORTION OF THE RECEPTACLE, AND AN AMMETER DIRECTLY CONNECTED BETWEEN THE TWO ELECTRODES COMPLETING AN ELECTRICAL CIRCUIT THROUGH THE ELECTRODE AND ELECTROLYTE HAVING NO EXTERNAL SOURCE OF ELECTRICALLY ENERGY.
References Cited (Backward Citations)
US2278248A
Cited
US2464087A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-09-07 | 1957-03-09 | 1957-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-09-07 | 1961-03-09 | 1961-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-09-07 | 1965-03-09 | 1965-09-08 | $7700.00 | Window Closed / Lapsed |