US3003932A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for the galvanic analysis of hydrogen
Assignee: EIDP Inc
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Filing: 1956-03-28
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Granted: 1961-10-10
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Expires: 1976-03-28
Abstract
No abstract record available.
Inventors
- 👤 Jr Harold Joseph Frey
- 👤 Voter Roger Conant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:47
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/403; G01N27/404; G01N27/4045
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
A METHOD FOR MEASURING THE HYDROGEN CONCENTRATION IN HYDROCARBON GAS STREAMS CONTAINING FROM 1 TO 1000 PARTS PER MILLION OF HYDROGEN, AND CONTAINING NO HYDROGEN OXIDIZING AGENTS, WHICH COMPRISES PASSING A GAS STREAM CONTAINING FROM 1 TO 1000 PARTS PER MILLION OF HYDROGEN INTO A HOLLOW RECEPTACLE CONTAINING A NOBLE METAL SHEET ANODE HAVING A SURFACE COATED WITH A COLLOIDAL DEPOSIT OF A NOBLE METAL, AN ELECTROLYTE SOLUTION, AND A MERCURY-MERCUROUS CHLORIDE CATHODE, SAID ELECTROLYTE BEING IN CONTACT WITH SAID ANODE AND SAID CATHODE, CONTACTING SAID GAS STREAM WITH THE METAL ANODE ABOVE THE LEVEL OF SAID ELECTROLYTE, AND INDICATING BY MEANS OF AN EXTERNAL CIRCUIT AND A CURRENT MEASURING DEVICE THE
Claim 2
Independent Claim
112 words
A METHOD FOR MEASURING THE HYDROGEN CONCENTRATION IN HYDROCARBON GAS STREAMS CONTAINING FROM 1 TO 1000 PARTS PER MILLION OF HYDROGEN, AND CONTAINING NO HYDROGEN OXIDIZING AGENTS, WHICH COMPRISES PASSING A GAS STREAM CONTAINING FROM 1 TO 1000 PARTS PER MILLION OF HYDROGEN INTO A HOLLOW RECEPTACLE CONTAINING A NOBLE METAL SHEET ANODE HAVING A SURFACE COATED WITH A COLLOIDAL DEPOSIT OF A NOBLE METAL, AN ELECTROLYTE SOLUTION, AND A MERCURY-MERCUROUS CHLORIDE CATHODE, SAID ELECTROLYTE BEING IN CONTACT WITH SAID ANODE AND SAID CATHODE, CONTACTING SAID GAS STREAM WITH THE METAL ANODE ABOVE THE LEVEL OF SAID ELECTROLYTE, AND INDICATING BY MEANS OF AN EXTERNAL CIRCUIT AND A CURRENT MEASURING DEVICE THE
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) | 1964-10-09 | 1965-04-10 | 1965-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-10-09 | 1969-04-10 | 1969-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-10-09 | 1973-04-10 | 1973-10-10 | $7700.00 | Window Closed / Lapsed |