US2992170A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas analyzer
Assignee: Research Instrument Corp
•
Filing: 1958-04-09
•
Granted: 1961-07-11
•
Expires: 1978-04-09
Abstract
No abstract record available.
Inventors
- 👤 Alfred D Robinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:59
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/403; G01N27/404
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
IN A METHOD FOR DETECTING THE PRESENCE AND AMOUNT OF OXYGEN IN ADMIXTURE WITH ANOTHER GAS BY MEANS OF AN ELECTROLYTIC CELL INCLUDING AN ELECTROLYTE, A CATHODE THAT CATALYZES THE REDUCTION OF OXYGEN UNDER THE CELL OPERATING CONDITIONS AND AN ANODE IN CONTACT WITH ELECTROLYTE, THE STEPS WHICH COMPRISE: ESTABLISHING A FILM OF ELECTROLYTE BETWEEN A BODY OF SAID ADMIXTURE AND THE SURFACE OF THE CATHODE THROUGH WHICH FILM THE ADMIXTURE DIFFUSES TO SAID SURFACE, BLOCKING THE MOVEMENT OF SUCH ADMIXTURE TO SAID CATHODE EXCEPT THROUGH ELECTROYLTE, CATALYTICALLY REACTING SAID OXYGEN AND SAID ELECTROLYTE AT THE TWO-PHASE BOUNDARY FORMED BETWEEN SAID ELECTROLYTE AND SAID CATHODE SURFACE TO REDUCE OXYGEN REACHING SAID SURFACE, AND MEASURING THE CURRENT GENERATED BY THE CATALYTIC ACTION OF SAID CATHODE ON GAS DIFFUSING THROUGH SAID ELEC TROLYTE TO SAID BOUNDARY.
Claim 2
Dependent Claim
134 words
IN A METHOD FOR DETECTING THE PRESENCE AND AMOUNT OF OXYGEN IN ADMIXTURE WITH ANOTHER GAS BY MEANS OF AN ELECTROLYTIC CELL INCLUDING AN ELECTROLYTE, A CATHODE THAT CATALYZES THE REDUCTION OF OXYGEN UNDER THE CELL OPERATING CONDITIONS AND AN ANODE IN CONTACT WITH ELECTROLYTE, THE STEPS WHICH COMPRISE: ESTABLISHING A FILM OF ELECTROLYTE BETWEEN A BODY OF SAID ADMIXTURE AND THE SURFACE OF THE CATHODE THROUGH WHICH FILM THE ADMIXTURE DIFFUSES TO SAID SURFACE, BLOCKING THE MOVEMENT OF SUCH ADMIXTURE TO SAID CATHODE EXCEPT THROUGH ELECTROYLTE, CATALYTICALLY REACTING SAID OXYGEN AND SAID ELECTROLYTE AT THE TWO-PHASE BOUNDARY FORMED BETWEEN SAID ELECTROLYTE AND SAID CATHODE SURFACE TO REDUCE OXYGEN REACHING SAID SURFACE, AND MEASURING THE CURRENT GENERATED BY THE CATALYTIC ACTION OF SAID CATHODE ON GAS DIFFUSING THROUGH SAID ELEC TROLYTE TO SAID BOUNDARY.
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) | 1964-07-10 | 1965-01-09 | 1965-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-10 | 1969-01-09 | 1969-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-10 | 1973-01-09 | 1973-07-11 | $7700.00 | Window Closed / Lapsed |