US3221393A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making bead type thermistors
Assignee: Victory Engineering Corp
•
Filing: 1961-09-05
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Granted: 1965-12-07
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Expires: 1981-09-05
Abstract
No abstract record available.
Inventors
- 👤 Sapoff Meyer
- 👤 Gecsey John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:49
CPC Classifications
H; H01; H01C; H01C17/00; H01C17/02; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49082; Y10T29/49085; Y10T29/49117; Y10T29/49169; Y10T29/49171
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
THE METHOD OF MANUFACTURING BEAD-TYPE THERMISTORS WHICH INCLUDES THE FOLLOWING STEPS: COATING TWO CONDUCTORS OF PLATINUM-IRIDIUM WITH GOLD TO FORM A SURFACE WHICH IS WET BY GLASS AND WHICH CAN BE SOLDERED, APPLYING A BED OF CALCINED POWDERED METALLIC OXIDES MIXED WITH A BINDER TO SAID CONDUCTORS SO THAT EACH CONDUCTOR IS EMBEDDED WITHIN THE BEAD, HEATING THE BEAD AND CONDUCTORS IN A FURNACE AT A TEMPERATURE WHICH LIES WITHIN THE RANGE OF 1,000 TO 1,500 DEGREES CENTIGRADE, APPLYING A LAYER OF POWDERED GLASS TO THE BEAD SURFACE, AND HEATING IN A FURNACE AT A TEMPERATURE WHICH LIES WITHIN THE RANGE OF 700 TO 900 DEGREES CENTIGRADE.
Claim 2
Independent Claim
107 words
THE METHOD OF MANUFACTURING BEAD-TYPE THERMISTORS WHICH INCLUDES THE FOLLOWING STEPS: COATING TWO CONDUCTORS OF PLATINUM-IRIDIUM WITH GOLD TO FORM A SURFACE WHICH IS WET BY GLASS AND WHICH CAN BE SOLDERED, APPLYING A BED OF CALCINED POWDERED METALLIC OXIDES MIXED WITH A BINDER TO SAID CONDUCTORS SO THAT EACH CONDUCTOR IS EMBEDDED WITHIN THE BEAD, HEATING THE BEAD AND CONDUCTORS IN A FURNACE AT A TEMPERATURE WHICH LIES WITHIN THE RANGE OF 1,000 TO 1,500 DEGREES CENTIGRADE, APPLYING A LAYER OF POWDERED GLASS TO THE BEAD SURFACE, AND HEATING IN A FURNACE AT A TEMPERATURE WHICH LIES WITHIN THE RANGE OF 700 TO 900 DEGREES CENTIGRADE.
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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) | 1968-12-06 | 1969-06-07 | 1969-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-06 | 1973-06-07 | 1973-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-06 | 1977-06-07 | 1977-12-07 | $7700.00 | Window Closed / Lapsed |