Patent US3070539A successfully refreshed from Google Patents.
US3070539A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ionic transducer
Assignee: Beckman Coulter Inc
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Filing: 1960-01-25
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Granted: 1962-12-25
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Expires: 1980-01-25
Abstract
No abstract record available.
Inventors
- 👤 Edwin P Arthur
- 👤 Donner Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:27
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/403; G01N27/404; G01N27/28; G01N27/30; G01N27/302; G01N27/416; G01N27/4162
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
IN AN IONIC TRANSDUCER FOR REACTION WITH A SAMPLE THE COMBINATION OF: BODY HAVING AN AXIAL FLUID FLOW PASSAGE TERMINATING IN AN OPENING AT AN END OF SAID BODY; AN ELECTRODE CARRIED IN SAID END AND DISPOSED ABOUT SAID PASSAGE WITH A FACE EXPOSED AT SAID END; A SELECTIVELY PERMEABLE MEMBRANE; MEANS FOR CLAMPING SAID MEMBRANE OVER SAID END WITH ONE SURFACE AND SAID END WITH THE SAMPLE AND WITH THE OTHER SURFACE EXPOSED FOR CONTACT DEFINING AN ELECTROLYTE FILM SPACE; MEANS DEFINING A SOURCE OF ELECTROLYTE COUPLED TO SAID PASSAGE FOR ELECTROLYTE FLOW THROUGH SAID PASSAGE AND RADICALLY OUTWARD THROUGH SAID FILM SPACE OVER SAID END BETWEEN SAID ELECTRODE FACE SAID SAID MEMBRANE; AND MEANS FOR ELECTRICALLY CONNECTING SAID ELECTRODE AND SAID ELECTROLYTE TO AN INDICATING DEVICE.
Claim 2
Dependent Claim
128 words
IN AN IONIC TRANSDUCER FOR REACTION WITH A SAMPLE THE COMBINATION OF: BODY HAVING AN AXIAL FLUID FLOW PASSAGE TERMINATING IN AN OPENING AT AN END OF SAID BODY; AN ELECTRODE CARRIED IN SAID END AND DISPOSED ABOUT SAID PASSAGE WITH A FACE EXPOSED AT SAID END; A SELECTIVELY PERMEABLE MEMBRANE; MEANS FOR CLAMPING SAID MEMBRANE OVER SAID END WITH ONE SURFACE AND SAID END WITH THE SAMPLE AND WITH THE OTHER SURFACE EXPOSED FOR CONTACT DEFINING AN ELECTROLYTE FILM SPACE; MEANS DEFINING A SOURCE OF ELECTROLYTE COUPLED TO SAID PASSAGE FOR ELECTROLYTE FLOW THROUGH SAID PASSAGE AND RADICALLY OUTWARD THROUGH SAID FILM SPACE OVER SAID END BETWEEN SAID ELECTRODE FACE SAID SAID MEMBRANE; AND MEANS FOR ELECTRICALLY CONNECTING SAID ELECTRODE AND SAID ELECTROLYTE TO AN INDICATING DEVICE.
References Cited (Backward Citations)
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US2755243A
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US2722658A
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US2913386A
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US2943028A
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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) | 1965-12-24 | 1966-06-25 | 1966-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-24 | 1970-06-25 | 1970-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-24 | 1974-06-25 | 1974-12-25 | $7700.00 | Window Closed / Lapsed |