US3442773A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrochemical gas measuring systems
Assignee: Elster Metering Holdings Ltd
•
Filing: 1966-06-08
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Granted: 1969-05-06
•
Expires: 1986-06-08
Abstract
No abstract record available.
Inventors
- 👤 Haydn Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:06
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/403; G01N27/406; G01N27/4067; G01N7/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
A METHOD OF PROVIDING A CONTINUOUS MEASUREMENT OF THE CONCENTRATION OF A CONSTITUTENT OF AN UNKNOWN GAS WHICH COMPRISES THE STEPS OF APPLYING A REFERENCE GAS TO ONE ELECTRODE OF AN ELECTROCHEMICAL DETECTOR, EXPOSING THE OTHER ELECTRODE OS SUCH DETECTOR TO THE UNKNOWN GAS, USING THE OUTPUT OF SAID DETECTOR CONTINUOUSLY TO CONTROL THE PRESSURE OF THE REFERENCE GAS OR THE
Claim 2
Independent Claim
61 words
A METHOD OF PROVIDING A CONTINUOUS MEASUREMENT OF THE CONCENTRATION OF A CONSTITUTENT OF AN UNKNOWN GAS WHICH COMPRISES THE STEPS OF APPLYING A REFERENCE GAS TO ONE ELECTRODE OF AN ELECTROCHEMICAL DETECTOR, EXPOSING THE OTHER ELECTRODE OS SUCH DETECTOR TO THE UNKNOWN GAS, USING THE OUTPUT OF SAID DETECTOR CONTINUOUSLY TO CONTROL THE PRESSURE OF THE REFERENCE GAS OR THE
References Cited (Backward Citations)
US3347767A
Cited
US3296113A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-05-05 | 1972-11-04 | 1973-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-05 | 1976-11-04 | 1977-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-05 | 1980-11-04 | 1981-05-06 | $7700.00 | Window Closed / Lapsed |