US3408269A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Analysis of organic materials
Assignee: Beckman Coulter Inc
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Filing: 1965-04-30
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Granted: 1968-10-29
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Expires: 1985-04-30
Abstract
No abstract record available.
Inventors
- 👤 Paul A Hersch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:08
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/403; G01N27/404; G01N27/4045; G01N31/00; G01N31/12; Y; Y10; Y10T; Y10T436/00; Y10T436/20; Y10T436/22; Y10T436/23
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
145 words
IN A METHOD FOR PREFORMING MICROANALYSIS OF AN ORGANIC SAMPLE, THE STEPS COMPRISING: INTRODUCING SAID SAMPLE INTO AN INERT CARRIER GAS STREM; CONVERTING THE CARBON AND HYDROGEN IN SAID SAMPLE INTO CO2 AND H2O, RESPECTIVELY: SUBSEQUENTLY CONVERTING THE CO2 AND H2O INTO CO; CONVERTING THE CO INTO IODINE VAPOR; THEREAFTER CONVEYING THE CARRIER GAS STREAM CONTAINING IODINE VAPOR TO A COULOMETRIC CELL COMPRISING A CATHODE FORMED OF AN INERT CONDUCTIVE MATERIAL AND AN ANODE SELECTED FROM THE GROUP CONSISTING OF ACTIVE CARBON, SILVER AND MERCURY, WITH SAID ELECTRODES BEING JOINED BY AN ELECTROLYTE, SAID CELL GENERATING A CURRENT WHICH IS PROPORTIONAL TO THE RATE AT WHICH IODINE VAPOR IS DELIVERED THERETO; AND INTEGRATING THE CURRENT SIGNAL GENERATED BY SAID CELL AS AN INDICATION OF THE AMOUNT OF IODINE VAPOR DELIVERED THERETO AND, THEREFORE, A FUNCTION OF THE AMOUNT OF HYDROGEN AND CARBON IN THE SAMPLE.
Claim 2
Dependent Claim
145 words
IN A METHOD FOR PREFORMING MICROANALYSIS OF AN ORGANIC SAMPLE, THE STEPS COMPRISING: INTRODUCING SAID SAMPLE INTO AN INERT CARRIER GAS STREM; CONVERTING THE CARBON AND HYDROGEN IN SAID SAMPLE INTO CO2 AND H2O, RESPECTIVELY: SUBSEQUENTLY CONVERTING THE CO2 AND H2O INTO CO; CONVERTING THE CO INTO IODINE VAPOR; THEREAFTER CONVEYING THE CARRIER GAS STREAM CONTAINING IODINE VAPOR TO A COULOMETRIC CELL COMPRISING A CATHODE FORMED OF AN INERT CONDUCTIVE MATERIAL AND AN ANODE SELECTED FROM THE GROUP CONSISTING OF ACTIVE CARBON, SILVER AND MERCURY, WITH SAID ELECTRODES BEING JOINED BY AN ELECTROLYTE, SAID CELL GENERATING A CURRENT WHICH IS PROPORTIONAL TO THE RATE AT WHICH IODINE VAPOR IS DELIVERED THERETO; AND INTEGRATING THE CURRENT SIGNAL GENERATED BY SAID CELL AS AN INDICATION OF THE AMOUNT OF IODINE VAPOR DELIVERED THERETO AND, THEREFORE, A FUNCTION OF THE AMOUNT OF HYDROGEN AND CARBON IN THE SAMPLE.
References Cited (Backward Citations)
US2805191A
Cited
US3234117A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-29 | 1972-04-29 | 1972-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-29 | 1976-04-29 | 1976-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-29 | 1980-04-29 | 1980-10-29 | $7700.00 | Window Closed / Lapsed |