US3223608A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrochemical gas analyzer
Assignee: Individual
•
Filing: 1961-05-05
•
Granted: 1965-12-14
•
Expires: 1981-05-05
Abstract
No abstract record available.
Inventors
- 👤 Paul A Hersch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:42
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/403; G01N27/404
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
138 words
IN AN APPRATUS CAPABLE OF DETECTING AND MEASURING SMALL AMOUNTS OF OXYGEN IN A GAS, THE COMBINATION COMPRISING A CONDUCTIVE CATHODE WIRE, THE SURFACE OF WHICH IS SELECTED FROM THE GROUP CONSISTING OF CARBON, COPPER, GOLD, MERCURY, SILVER, AND THE ELEMENTS OF GROUP VIII OF THE PERIODIC TABLE HAVING AN ATOMIC NUMBER OF AT LEAST 44, A CONDUCTIVE ANODE WIRE, THE SURFACE OF WHICH IS SELECTED FROM THE GROUP CONSISTING OF CARBON, GOLD, SILVER, STAINLESS STEEL, TANTALUM, MERCURY, AND THE ELEMENTS OF GROUP VIII OF THE PERIODIC TABLE HAVING AN ATOMIC NUMBER OF AT LEAST 44, A NON-CONDUCTIVE POLYMERIC POROUS ELECTROLYTE-RETENTIVE SUBSTANTIALLY CYLINDRICAL DIAPHRAGM, AN OUTER SOURCE OF ELECTRICAL CURRENT CONNECTED TO SAID ANODE WIRE AND SAID CATHODE WIRE HAVING AN ELECTROMOTIVE FORCE SUFFICIENT TO CATHODICALLY REDUCE OXYGEN BUT INSUFICIENT TO DECOMPOSE WATER WHEREBY HYDROGEN IS EVOLVED, AND
Claim 2
Dependent Claim
138 words
IN AN APPRATUS CAPABLE OF DETECTING AND MEASURING SMALL AMOUNTS OF OXYGEN IN A GAS, THE COMBINATION COMPRISING A CONDUCTIVE CATHODE WIRE, THE SURFACE OF WHICH IS SELECTED FROM THE GROUP CONSISTING OF CARBON, COPPER, GOLD, MERCURY, SILVER, AND THE ELEMENTS OF GROUP VIII OF THE PERIODIC TABLE HAVING AN ATOMIC NUMBER OF AT LEAST 44, A CONDUCTIVE ANODE WIRE, THE SURFACE OF WHICH IS SELECTED FROM THE GROUP CONSISTING OF CARBON, GOLD, SILVER, STAINLESS STEEL, TANTALUM, MERCURY, AND THE ELEMENTS OF GROUP VIII OF THE PERIODIC TABLE HAVING AN ATOMIC NUMBER OF AT LEAST 44, A NON-CONDUCTIVE POLYMERIC POROUS ELECTROLYTE-RETENTIVE SUBSTANTIALLY CYLINDRICAL DIAPHRAGM, AN OUTER SOURCE OF ELECTRICAL CURRENT CONNECTED TO SAID ANODE WIRE AND SAID CATHODE WIRE HAVING AN ELECTROMOTIVE FORCE SUFFICIENT TO CATHODICALLY REDUCE OXYGEN BUT INSUFICIENT TO DECOMPOSE WATER WHEREBY HYDROGEN IS EVOLVED, AND
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-13 | 1969-06-14 | 1969-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-13 | 1973-06-14 | 1973-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-13 | 1977-06-14 | 1977-12-14 | $7700.00 | Window Closed / Lapsed |