US3015633A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of thermistors
Assignee: Thales SA
•
Filing: 1958-01-02
•
Granted: 1962-01-02
•
Expires: 1978-01-02
Abstract
No abstract record available.
Inventors
- 👤 Humbert Michel
- 👤 Floriot Jacques
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:42
CPC Classifications
H; H01; H01C; H01C7/00; H01C7/04; H01C7/042; H01C7/043
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
A PROCESS OF MANUFACTURING THERMISTORS COMPRISING THE STEPS OF SINTERING AT A TEMPERATURE HIGHER THAN 100* C., A MIXTURE OF AN ORGANIC BINDER AND POWDERED METALLIC OXIDES SELECTED FROM THE GROUP CONSISTING OF TITANIUM, VANADIUM, MANGANESE, IRON, COBALT, NICKEL, COPPER AND ALUMINUM OXIDES WHEREBY A FIRST THERMISTOR IS OBTAINED; OF GRINDING SAID FIRST THERMISTOR INTO A FINE POWDER, OF SHAPING SAID POWDER WITH A LEAD BORATE ENAMEL, THE MELTING POINT OF WHICH IS LOWER THAN 1000*C. TO PROVIDE A SHAPED OBJECT AND SUBJECTING THE SHAPED OBJECT TO A SINTERING TREATMENT, AT A TEMPERATURE AT LEAST 5% LOWER THAN THE TEMPERATURE USED IN THE MANUFACTURE OF SAID FIRST THERMISTOR.
Claim 2
Dependent Claim
108 words
A PROCESS OF MANUFACTURING THERMISTORS COMPRISING THE STEPS OF SINTERING AT A TEMPERATURE HIGHER THAN 100* C., A MIXTURE OF AN ORGANIC BINDER AND POWDERED METALLIC OXIDES SELECTED FROM THE GROUP CONSISTING OF TITANIUM, VANADIUM, MANGANESE, IRON, COBALT, NICKEL, COPPER AND ALUMINUM OXIDES WHEREBY A FIRST THERMISTOR IS OBTAINED; OF GRINDING SAID FIRST THERMISTOR INTO A FINE POWDER, OF SHAPING SAID POWDER WITH A LEAD BORATE ENAMEL, THE MELTING POINT OF WHICH IS LOWER THAN 1000*C. TO PROVIDE A SHAPED OBJECT AND SUBJECTING THE SHAPED OBJECT TO A SINTERING TREATMENT, AT A TEMPERATURE AT LEAST 5% LOWER THAN THE TEMPERATURE USED IN THE MANUFACTURE OF SAID FIRST THERMISTOR.
References Cited (Backward Citations)
CA474998A
Cited
US2179960A
Cited
US2358211A
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US2462162A
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US2479914A
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GB618966A
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US2700220A
Cited
US2786819A
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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) | 1965-01-01 | 1965-07-03 | 1966-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-01 | 1969-07-03 | 1970-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-01 | 1973-07-03 | 1974-01-02 | $7700.00 | Window Closed / Lapsed |