US4477793A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Zinc oxide non-linear resistor
Assignee: Fuji Electric Co Ltd
•
Filing: 1983-06-29
•
Granted: 1984-10-16
•
Expires: 2003-06-29
Abstract
Abstract A voltage non-linear resistor in the form of a sintered body is disclosed. The sintered body is comprised of 0.08 to 5.0 atomic % of a rare earth element, 0.1. to 10 atomic % of cobalt, 5x10-4 to 1x10-1 atomic % of boron and an additional component which may be 0.01 to 5.0 atomic % of magnesium or calcium and/or 1x10-4 to 5x10-2 atomic % of aluminum, gallium or indium. The remainder of the sintered body is comprised of zinc oxide. The sintered body provides a small voltage non-linear resistor with high discharge current withstand capability and good life performance.
Inventors
- 👤 Kazuo Mukae
- 👤 Satoshi Maruyama
- 👤 Koichi Tsuda
- 👤 Ikuo Nagasawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:37
CPC Classifications
H; H01; H01C; H01C7/00; H01C7/10; H01C7/105; H01C7/108; H01C7/112
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
79 words
A voltage non-linear resistor comprising a sintered body composed of a main component of zinc oxide, and additives of (i) a total of 0.08 to 5.0 atomic % of at least one rare earth element; (ii) 0.1 to 10.0 atomic % of cobalt; (iii) 5×10 -4 to 1×10 -1 atomic % of boron; and (iv) a total of 1×10 -4 to 5×10 -2 atomic % of at least one component selected from the group of aluminum, gallium, and indium.
Claim 2
Dependent Claim
79 words
A voltage non-linear resistor comprising a sintered body composed of a main component of zinc oxide, and additives of (i) a total of 0.08 to 5.0 atomic % of at least one rare earth element; (ii) 0.1 to 10.0 atomic % of cobalt; (iii) 5×10 -4 to 1×10 -1 atomic % of boron; and (iv) a total of 1×10 -4 to 5×10 -2 atomic % of at least one component selected from the group of aluminum, gallium, and indium.
Claim 3
Dependent Claim
101 words
A voltage non-linear resistor comprising a sintered body composed of a main component of zinc oxide, and additives of (i) a total of 0.08 to 5.0 atomic % of at least one rare earth element; (ii) 0.1 to 10.0 atomic % of cobalt; (iii) 5×10 -4 to 1×10 -1 atomic % of boron; (iv) a total of 1×10 -4 to 5×10 -2 atomic % of at least one component selected from the group of aluminum, gallium and indium, and (v) a total of 0.01 to 5.0 atomic % of at least one component selected from the group of magnesium and calcium.
Claim 4
Dependent Claim
101 words
A voltage non-linear resistor comprising a sintered body composed of a main component of zinc oxide, and additives of (i) a total of 0.08 to 5.0 atomic % of at least one rare earth element; (ii) 0.1 to 10.0 atomic % of cobalt; (iii) 5×10 -4 to 1×10 -1 atomic % of boron; (iv) a total of 1×10 -4 to 5×10 -2 atomic % of at least one component selected from the group of aluminum, gallium and indium, and (v) a total of 0.01 to 5.0 atomic % of at least one component selected from the group of magnesium and calcium.
References Cited (Backward Citations)
US4033906A
Cited
US4038217A
Cited
US4069061A
Cited
US4077915A
Cited
US4169071A
Cited
US4160748A
Cited
US4285839A
Cited
US4386022A
Cited
US4326187A
Cited
US4383237A
Cited
US4397775A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-10-16 | 1988-04-16 | 1988-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-10-16 | 1992-04-16 | 1992-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-10-16 | 1996-04-16 | 1996-10-16 | $7700.00 | Window Closed / Lapsed |