US3764951A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Non-linear resistors
Assignee: Mitsubishi Mining and Cement Co Ltd
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Filing: 1973-01-26
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Granted: 1973-10-09
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Expires: 1993-01-26
Abstract
Abstract New non-linear resistors having a remarkably stable volt-ampere characteristic are provided. Such resistors comprise several sintered wafers superposed, said sintered wafer consisting of iron oxide as the main component and the respective prescribed quantities of calcium oxide, rare earth oxide and the like, and electrodes applied to opposite surfaces of said several sintered wafers superposed and are based on utilization of the property of the contact surfaces between said several sintered wafers superposed.
Inventors
- 👤 M Ono
- 👤 K Tachibana
- 👤 M Nishioka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:34
CPC Classifications
H; H01; H01C; H01C7/00; H01C7/10; H01C7/105; H01C7/108; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49082
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
58 words
A non-linear resistor as described in claim 1, wherein said sintered wafer comprises iron oxide as the main component, 0.1*34 weight percent of calcium oxide (CaO), 0.1*34 weight percent of rare earth oxide and 0.1*10 weight percent of at least one oxide selected from the group consisting of aluminum oxide (Al2O3), zirconium oxide (ZrO2) and cobalt oxide (CoO).
References Cited (Backward Citations)
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 |