US3687871A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nonlinear resistor and nonlinear resistor composition
Assignee: Panasonic Holdings Corp
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Filing: 1970-07-24
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Granted: 1972-08-29
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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 BISMUTH FLUORIDE, AND A NONLINEAR RESISTOR MADE FROM SAID COMPOSITION. THE RESISTOR COMPOSITION AND THE RESISTOR 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.
Inventors
- 👤 Takeshi Masuyama
- 👤 Matsuoka Takatsuki
- 👤 Hirakata Michio
- 👤 Tsuyoshi Nishi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:52
CPC Classifications
H; H01; 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) | 1975-08-29 | 1976-02-28 | 1976-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-29 | 1980-02-28 | 1980-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-29 | 1984-02-28 | 1984-08-29 | $7700.00 | Window Closed / Lapsed |