US3663458A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nonlinear resistors of bulk type
Assignee: Panasonic Holdings Corp
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Filing: 1968-09-27
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Granted: 1972-05-16
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Expires: 1988-09-27
Abstract
Abstract A NONLINEAR RESISTOR WHEREIN THE NONLINEARITY IS DUE TO THE BULK THEREOF AND WHICH HAS A HIGH N-VALUE COMPRISES A SINTERED BODY OF A COMPOSITION COMPRISING ZNO AND 0.05 TO 10.0 MOLE OF BI2O3. SUCH A NONLINEAR RESISTOR HAS NONOHMIC RESISTANCE DUE TO THE BULK ITSELF, AND THE C-VALUE CAN BE CHANGED WITHOUT IMPAIRING THE NVALUE. OHMIC ELECTRODES ARE APPLIED TO OPPOSITE SURFACES OF THE SINTERED BODY. THE PRESENCE OF OTHER SPECIFIED OXIDES TENDS TO RAISE THE N-VALUE.
Inventors
- 👤 Takeshi Masuyama
- 👤 Michio Matsuoka
- 👤 Tsuyoshi Nishi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:55
CPC Classifications
H; H01; H01B; H01B1/00; H01B1/06; H01B1/08; H01C; H01C7/00; H01C7/10; H01C7/105; H01C7/108; H01C7/112
Claims Analysis
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References Cited (Backward Citations)
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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) | 1975-05-16 | 1975-11-15 | 1976-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-16 | 1979-11-15 | 1980-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-16 | 1983-11-15 | 1984-05-16 | $7700.00 | Window Closed / Lapsed |