US3682841A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Voltage dependent resistors in a bulk type
Assignee: Panasonic Holdings Corp
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Filing: 1970-12-01
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Granted: 1972-08-08
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Expires: 1990-12-01
Abstract
Abstract A VOLTAGE DEPENDENT RESISTOR OF THE BULK TYPE. THE RESISTOR HAS A SINTERED BODY CONSISTING ESSENTIALLY OF, AS A MAJOR PART, ZINC OXIDE (CNO) AND, AS AN ADDITIVE, 0.05 TO 10.0 MOLE PERCENT OF BERYLLIUM OXIDE (BEO) AND 0.05 TO 10.0 MOLE PERCENT, IN TOTAL, OF AT LEAST ONE MEMBER SELECTED FROM THE GROUP CONSISTING OF BISMUTH OXIDE (BI2O3), COBALT OXIDE (COO) MANGANESE OXIDE (MNO), BARIUM OXIDE (BAO), STRONTIUM OXIDE (SRO) AND LEAD OXIDE (PBO). ELECTRODES ARE PROVIDED WHICH ARE IN CONTACT WITH SAID BODY.
Inventors
- 👤 Michio Matsuoka
- 👤 Takeshi Masuyama
- 👤 Yoshio Iida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:51
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) | 1975-08-08 | 1976-02-07 | 1976-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-08 | 1980-02-07 | 1980-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-08 | 1984-02-07 | 1984-08-08 | $7700.00 | Window Closed / Lapsed |