US3723175A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nonlinear resistors of bulk type
Assignee: GDI NEWCO Inc A DE CORP
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Filing: 1970-06-11
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Granted: 1973-03-27
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Expires: 1990-06-11
Abstract
Abstract IMPROVED NONLINEAR RESISTORS OF HIGH N-VALUE, WHEREIN THE NONLINEARITY IS DUE TO THE BULK THEREOF AND COMPRISING A SINTERED BODY OF ZINC OXIDE WITH 0.1 TO 1.0 MOLE PERCENT BISMUTH OXIDE ON A SINTERED BODY OF ZINC OXIDE AT A TEMPERATURE OF 600*C. TO 1200*C. FOR A TIME SUFFICIENT TO DIFFUSE BISMUTH IONS INTO THE BULK OF THE SINTERED BODY AND HEATING THE COATED BODY.
Inventors
- 👤 T Masuyama
- 👤 M Matsuoka
- 👤 T Nishi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:23
CPC Classifications
H; H01; H01C; H01C7/00; H01C7/10; H01C7/105; H01C7/108; H01C7/112; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49082; Y10T29/49099
Claims Analysis
Total Claims: 0
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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) | 1976-03-26 | 1976-09-25 | 1977-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-26 | 1980-09-25 | 1981-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-26 | 1984-09-25 | 1985-03-27 | $7700.00 | Window Closed / Lapsed |