US3752753A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of fabricating a sensor for the determination of the oxygen content of liquid metals
Assignee: Individual
•
Filing: 1971-04-30
•
Granted: 1973-08-14
•
Expires: 1991-04-30
Abstract
Abstract A METHOD FOR FABRICATING A DIRECT READING OXYGEN PROBE STRUCTURE FOR INSERTION INTO HIGH TEMPERATURE LIQUID METAL COMPRISES THE STEPS OF INSERTING A RELATIVELY CLOSELY FITTING MASS OF AN ELECTROLYTE MATERIAL INTO ONE END OF AN INSULATING ENVELOPE, AND HEATING THE ENVELOPE TO A SINTERING TEMPERATURE OF THE MASS AT A TEMPERATURE AND TIME INTERVAL SUFFICIENT TO SINTER AND SEAL THE MASS TO THE ENVELOPE. DESIRABLY, THE ENVELOPE AND MASS ARE SIZED AND SHAPED SO AS TO BE CAPABLE OF WITHSTANDING THERMAL SHOCK UPON CONTACTING THE LIQUID METAL.
Inventors
- 👤 G Fitterer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 01:23
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/403; G01N27/406; G01N27/411
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-13 | 1977-02-12 | 1977-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-13 | 1981-02-12 | 1981-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-13 | 1985-02-12 | 1985-08-14 | $7700.00 | Window Closed / Lapsed |