US3764566A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Voltage nonlinear resistors
Assignee: Panasonic Holdings Corp
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Filing: 1972-03-24
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Granted: 1973-10-09
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Expires: 1992-03-24
Abstract
Abstract A voltage dependent resistor in a bulk type comprising a sintered body consisting essentially of, as a major part, zinc oxide (ZnO) and as an additive, 0.05 to 20.0 mole percent of silicon dioxide (SiO2) 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), and electrodes in contact with the body.
Inventors
- 👤 M Matsuoka
- 👤 T Masuyama
- 👤 Y Iida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:35
CPC Classifications
H; H01; H01C; H01C7/00; H01C7/10; H01C7/105; H01C7/108; H01C7/112
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
61 words
A voltage dependent resistor according to claim 1, wherein said additive consists essentially of 0.1 to 10.0 mole percent of silicon dioxide (SiO2) and 0.1 to 3.0 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).
Claim 2
Dependent Claim
61 words
A voltage dependent resistor according to claim 1 wherein said additive consists essentially of 0.1 to 10.0 mole percent of silicon dioxide (SiO2), 0.1 to 3.0 mole percent of bismuth oxide (Bi2O3), and further contains 0.1 to 3.0 mole percent of at least one member selected from the group consisting of antimony oxide (Sb2O3), chromium oxide (Cr2O3) and nickel oxide (NiO).
Claim 3
Dependent Claim
71 words
A voltage dependent resistor according to claim 1, wherein said additive consists essentially of 0.1 to 10.0 mole percent of silicon dioxide (SiO2), 0.1 to 3.0 mole percent of bismuth oxide (Bi2O3), and 0.1 to 3.0 mole percent of cobalt oxide (CoO) and further contains 0.1 to 3.0 mole percent of at least one member selected from the group consisting of antimony oxide (Sb2O3), chromium oxide (Cr2O3) and nickel oxide (NiO).
Claim 4
Dependent Claim
71 words
A voltage dependent resistor according to claim 1 wherein said additive consists essentially of 0.1 to 10.0 mole percent of silicon dioxide (SiO2), 0.1 to 3.0 mole percent of bismuth oxide (Bi2O3) and 0.1 to 3.0 mole percent of manganese oxide (MnO), and further contains 0.1 to 3.0 mole percent of at least one member selected from the group consisting of antimony oxide (Sb2O3), chromium oxide (Cr2O3) and nickel oxide (NiO).
Claim 5
Dependent Claim
80 words
A voltage dependent resistor according to claim 1 wherein said additive consists essentially of 0.1 to 10.0 mole percent of silicon dioxide (SiO2), 0.1 to 3.0 mole percent of bismuth oxide (Bi2O3), 0.1 to 3.0 mole percent of cobalt oxide (CoO) and 0.1 to 3.0 mole percent of manganese oxide (MnO), and further contains 0.1 to 3.0 mole percent of at least one member selected from the group consisting of antimony oxide (Sb2O3), chromium oxide (Cr2O3) and nickel oxide (NiO).
References Cited (Backward Citations)
US2305577A
Cited
US3598763A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-08 | 1977-04-09 | 1977-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-08 | 1981-04-09 | 1981-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-08 | 1985-04-09 | 1985-10-09 | $7700.00 | Window Closed / Lapsed |