US3235477A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical apparatus
Assignee: Honeywell Inc
•
Filing: 1962-10-12
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Granted: 1966-02-15
•
Expires: 1982-10-12
Abstract
No abstract record available.
Inventors
- 👤 Allen H Keyser
- 👤 Ronald L Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:37
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/403; G01N27/404
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
A POLAROGRAPHIC CELL FOR MEASURING THE CONCENTRATION OF A DISSOLVED REDUCIBLE GAS IN A SOLUTION COMPRISING A PLATINUM ELECTRODE, A SILVER ELECTRODE, AN ELECTRICALLY INSULATING AND CHEMICALLY INERT MEANS SUPPORTING SAID ELECTRODES IN A SPACED RELATIONSHIP, FLUID CHANNEL MEANS FOR AN ELECTROLYTE SOLUTION CONTAINED IN SAID INERT MEANS AND PROVIDING AN ELECTRICAL CURRENT BRIDGE BETWEEN SAID ELECTRODES, A SELECTIVELY PERMEABLE MEMBRANE SUPPORTED BY SAID INERT MEANS SEPARATING SAID ELECTRODES AND SAID ELECTROLYTE FROM SAID SOLUTION, SAID MEMBRANE BEING SELECTIVELY GAS PERMEABLE TO SAID DISSOLVED REDUCIBLE GAS, AND A FLUID FILTER MEANS EFFECTIVE TO FREELY PASS SAID ELECTROLYTE SOLUTION WHILE RETAINING ANY INSOLUBLE PRECIPITATE THEREIN SUPPORTED BY SAID INERT MEANS IN SAID CHANNEL BETWEEN SAID SPACED ELECTRODES TO FILTER ALL OF SAID ELECTROLYTE PASSING BETWEEN SAID ELECTRODES, SAID FILTER MEANS BEING ALSO IMPREGNATED WITH AN ION EXCHANGE RESIN.
Claim 2
Dependent Claim
137 words
A POLAROGRAPHIC CELL FOR MEASURING THE CONCENTRATION OF A DISSOLVED REDUCIBLE GAS IN A SOLUTION COMPRISING A PLATINUM ELECTRODE, A SILVER ELECTRODE, AN ELECTRICALLY INSULATING AND CHEMICALLY INERT MEANS SUPPORTING SAID ELECTRODES IN A SPACED RELATIONSHIP, FLUID CHANNEL MEANS FOR AN ELECTROLYTE SOLUTION CONTAINED IN SAID INERT MEANS AND PROVIDING AN ELECTRICAL CURRENT BRIDGE BETWEEN SAID ELECTRODES, A SELECTIVELY PERMEABLE MEMBRANE SUPPORTED BY SAID INERT MEANS SEPARATING SAID ELECTRODES AND SAID ELECTROLYTE FROM SAID SOLUTION, SAID MEMBRANE BEING SELECTIVELY GAS PERMEABLE TO SAID DISSOLVED REDUCIBLE GAS, AND A FLUID FILTER MEANS EFFECTIVE TO FREELY PASS SAID ELECTROLYTE SOLUTION WHILE RETAINING ANY INSOLUBLE PRECIPITATE THEREIN SUPPORTED BY SAID INERT MEANS IN SAID CHANNEL BETWEEN SAID SPACED ELECTRODES TO FILTER ALL OF SAID ELECTROLYTE PASSING BETWEEN SAID ELECTRODES, SAID FILTER MEANS BEING ALSO IMPREGNATED WITH AN ION EXCHANGE RESIN.
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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) | 1969-02-14 | 1969-08-16 | 1970-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-14 | 1973-08-16 | 1974-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-14 | 1977-08-16 | 1978-02-15 | $7700.00 | Window Closed / Lapsed |