Patent US3658725A successfully refreshed from Google Patents.
US3658725A
Expired / Lapsed
US
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Nonlinear resistor and nonlinear resistor composition
Assignee: Panasonic Holdings Corp
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Filing: 1970-07-24
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Granted: 1972-04-25
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Expires: 1990-07-24
Abstract
Abstract A RESISTOR COMPOSITION HAVING A NONLINEAR VOLTAGE CHARACTERISTIC CONSISTING ESSENTIALLY OF ZINC OXIDE AND, AS AN ADDITIVE, AT LEAST ONE MEMBER TAKEN FROM THE GROUP CONSISTING OF LEAD FLUORIDE, BARIUM FLUORIDE OR STRONTIUM FLUORIDE, AND A NONLINEAR RESISTOR MADE FROM SAID COMPOSITION. THE NONLINEAR RESISTOR COMPOSITION AND THE RESISTOR MADE THEREFROM HAVE THE ELECTRICAL PROPERTIES THEREOF FURTHER IMPROVED BY THE ADDITION OF AT LEAST ONE MEMBER SELECTED FROM THE GROUP CONSISTING OF COBALT FLUORIDE, MANGANESE FLUORIDE, STANNOUS FLUORIDE, NICKEL FLUORIDE, CHROMIUM FLUORIDE, BISMUTH OXIDE, COBALT OXIDE, AND MANGANESE OXIDE. D R A W I N G
Inventors
- 👤 Takeshi Masuyama
- 👤 Michio Matsuoka
- 👤 Yoshio Iida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:45
CPC Classifications
H; H01; H01B; H01B1/00; H01C; H01C7/00; H01C7/10; H01C7/105; H01C7/108; H01C7/112
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) | 1975-04-25 | 1975-10-25 | 1976-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-25 | 1979-10-25 | 1980-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-25 | 1983-10-25 | 1984-04-25 | $7700.00 | Window Closed / Lapsed |