US3250688A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrochemical transducer and method of using the same
Assignee: Beckman Coulter Inc
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Filing: 1963-02-20
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Granted: 1966-05-10
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Expires: 1983-02-20
Abstract
No abstract record available.
Inventors
- 👤 Edwin P Arthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:38
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/416; G01N27/4166
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
A METHOD OF MEASURING THE ION CONCENTRATION IN A LIQUID SAMPLE COMPRISING THE STEPS OF: PROVIDING A BUFFERED ELECTROLYTE FLUID RESERVOIR HAVING AN OPENING THEREIN AND AN INDICATOR HALF-CELL IN THE RESERVOIR; PROVIDING A REFERENCE HALF-CELL IN A SALT BRIDGE FLUID; SUPPLYING A LIQUID SAMPLE TO A SAMPLE TUBE FORMED OF ION SENSITIVE GLASS AND HAVING AN OPENING AT EACH END THEREOF, SAID SAMPLE TUBE AND SAUD BUFFERED ELECTROLYTE FLUID RESERVOIR BEING READILY DETACHABLE FROM EACH OTHER; APPLYING A BUFFERED ELECTROLYTE GEL TO A PORTION OF THE OUTER SURFACE OF SAID SAMPLE TUBE; CONTACTING ONE OF THE ENDS OF SAID SAMPLE TUBE WITH SAID SALT BRIDGE FLUID;
Claim 2
Independent Claim
107 words
A METHOD OF MEASURING THE ION CONCENTRATION IN A LIQUID SAMPLE COMPRISING THE STEPS OF: PROVIDING A BUFFERED ELECTROLYTE FLUID RESERVOIR HAVING AN OPENING THEREIN AND AN INDICATOR HALF-CELL IN THE RESERVOIR; PROVIDING A REFERENCE HALF-CELL IN A SALT BRIDGE FLUID; SUPPLYING A LIQUID SAMPLE TO A SAMPLE TUBE FORMED OF ION SENSITIVE GLASS AND HAVING AN OPENING AT EACH END THEREOF, SAID SAMPLE TUBE AND SAUD BUFFERED ELECTROLYTE FLUID RESERVOIR BEING READILY DETACHABLE FROM EACH OTHER; APPLYING A BUFFERED ELECTROLYTE GEL TO A PORTION OF THE OUTER SURFACE OF SAID SAMPLE TUBE; CONTACTING ONE OF THE ENDS OF SAID SAMPLE TUBE WITH SAID SALT BRIDGE FLUID;
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) | 1969-05-09 | 1969-11-08 | 1970-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-09 | 1973-11-08 | 1974-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-09 | 1977-11-08 | 1978-05-10 | $7700.00 | Window Closed / Lapsed |