US3953373A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Voltage-dependent resistor
Assignee: Panasonic Holdings Corp
•
Filing: 1974-07-18
•
Granted: 1976-04-27
•
Expires: 1994-07-18
Abstract
Abstract A voltage-dependent resistor comprising a sintered body comprising ZnO as a major part and Bi2O3 and GeO2 as additives with electrodes applied to the opposite surfaces of the sintered body. This voltage-dependent resistor has a low C-value and a high n-value in I=(V/C)n along with high power dissipation for surge energy and high stability to a high D.C. load. Further, other additives such as NiO, Co2O3, MnO, TiO2 and Cr2O3 can advantageously be added to the sintered body.
Inventors
- 👤 Mikio Matsuura
- 👤 Osamu Makino
- 👤 Nobuji Nishi
- 👤 Michio Matsuoka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:04
CPC Classifications
H; H01; H01C; H01C7/00; H01C7/10; H01C7/105; H01C7/108; H01C7/112
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
54 words
A voltage-dependent resistor of the bulk type comprising a sintered body consisting essentially of 0.1 to 5.0 mole percent of bismuth oxide (Bi 2 O 3 ) and 0.01 to 5.0 mole percent of germanium oxide (GeO 2 ), the remainder being zinc oxide and electrodes applied to opposite surfaces of said sintered body.
Claim 2
Dependent Claim
54 words
A voltage-dependent resistor of the bulk type comprising a sintered body consisting essentially of 0.1 to 5.0 mole percent of bismuth oxide (Bi 2 O 3 ) and 0.01 to 5.0 mole percent of germanium oxide (GeO 2 ), the remainder being zinc oxide and electrodes applied to opposite surfaces of said sintered body.
Claim 3
Dependent Claim
58 words
A voltage-dependent resistor of the bulk type consisting essentially of 0.1 to 5.0 mole percent of bismuth oxide (Bi 2 O 3 ), 0.01 to 5.0 mole percent of germanium oxide (GeO 2 ), 0.1 to 5.0 mole percent of nickel oxide (NiO), the remainder being zinc oxide and electrodes applied to opposite surfaces of said sintered body.
Claim 4
Dependent Claim
58 words
A voltage-dependent resistor of the bulk type consisting essentially of 0.1 to 5.0 mole percent of bismuth oxide (Bi 2 O 3 ), 0.01 to 5.0 mole percent of germanium oxide (GeO 2 ), 0.1 to 5.0 mole percent of nickel oxide (NiO), the remainder being zinc oxide and electrodes applied to opposite surfaces of said sintered body.
Claim 5
Dependent Claim
76 words
A voltage-dependent resistor of the bulk type comprising a sintered body consisting essentially of 0.1 to 5.0 mole percent of bismuth oxide (Bi 2 O 3 ), 0.01 to 5.0 mole percent of germanium oxide (GeO 2 ), 0.1 to 3.0 mole percent of cobalt oxide (Co 2 O 3 ) and 0.1 to 3.0 mole percent of manganese oxide (MnO), the remainder being zinc oxide and electrodes applied to opposite surfaces of said sintered body.
Claim 6
Dependent Claim
76 words
A voltage-dependent resistor of the bulk type comprising a sintered body consisting essentially of 0.1 to 5.0 mole percent of bismuth oxide (Bi 2 O 3 ), 0.01 to 5.0 mole percent of germanium oxide (GeO 2 ), 0.1 to 3.0 mole percent of cobalt oxide (Co 2 O 3 ) and 0.1 to 3.0 mole percent of manganese oxide (MnO), the remainder being zinc oxide and electrodes applied to opposite surfaces of said sintered body.
Claim 7
Dependent Claim
85 words
A voltage-dependent resistor of the bulk type comprising a sintered body consisting essentially of 0.1 to 5.0 mole percent of bismuth oxide (Bi 2 O 3 ), 0.01 to 5.0 mole percent of germanium oxide (GeO 2 ), 0.1 to 5.0 mole percent of nickel oxide (NiO), 0.1 to 3.0 mole percent of cobalt oxide (Co 2 O 3 ) and 0.1 to 3.0 mole percent of manganese oxide (MnO), the remainder being zinc oxide and electrodes applied to opposite surfaces of said sintered body.
Claim 8
Dependent Claim
85 words
A voltage-dependent resistor of the bulk type comprising a sintered body consisting essentially of 0.1 to 5.0 mole percent of bismuth oxide (Bi 2 O 3 ), 0.01 to 5.0 mole percent of germanium oxide (GeO 2 ), 0.1 to 5.0 mole percent of nickel oxide (NiO), 0.1 to 3.0 mole percent of cobalt oxide (Co 2 O 3 ) and 0.1 to 3.0 mole percent of manganese oxide (MnO), the remainder being zinc oxide and electrodes applied to opposite surfaces of said sintered body.
Claim 9
Dependent Claim
101 words
A voltage-dependent resistor of the bulk type comprising a sintered body consisting essentially of 0.1 to 5.0 mole percent of bismuth oxide (Bi 2 O 3 ), 0.01 to 5.0 mole percent of germanium oxide (GeO 2 ), 0.1 to 3.0 mole percent of cobalt oxide (Co 2 O 3 ) and 0.1 to 3.0 mole percent of manganese oxide (MnO), 0.1 to 3.0 mole percent of titanium oxide (TiO 2 ) and 0.01 to 3.0 mole percent of chromium oxide (Cr 2 O 3 ), the remainder being zinc oxide and electrodes applied to opposite surfaces of said sintered body.
Claim 10
Dependent Claim
101 words
A voltage-dependent resistor of the bulk type comprising a sintered body consisting essentially of 0.1 to 5.0 mole percent of bismuth oxide (Bi 2 O 3 ), 0.01 to 5.0 mole percent of germanium oxide (GeO 2 ), 0.1 to 3.0 mole percent of cobalt oxide (Co 2 O 3 ) and 0.1 to 3.0 mole percent of manganese oxide (MnO), 0.1 to 3.0 mole percent of titanium oxide (TiO 2 ) and 0.01 to 3.0 mole percent of chromium oxide (Cr 2 O 3 ), the remainder being zinc oxide and electrodes applied to opposite surfaces of said sintered body.
Claim 11
Dependent Claim
109 words
A voltage-dependent resistor of the bulk type comprising a sintered body consisting essentially of 0.1 to 5.0 mole percent of bismuth oxide (Bi 2 O 3 ), 0.01 to 5.0 mole percent of germanium oxide (GeO 2 ), 0.1 to 5.0 mole percent of nickel oxide (NiO), 0.1 to 3.0 mole percent of cobalt oxide (Co 2 O 3 ), 0.1 to 3.0 mole percent of manganese oxide (MnO), 0.1 to 3.0 mole percent of titanium oxide (TiO 2 ) and 0.01 to 3.0 mole percent of chromium oxide (Cr 2 O 3 ), the remainder being zinc oxide and electrodes applied to opposite surfaces of said sintered body.
Claim 12
Dependent Claim
109 words
A voltage-dependent resistor of the bulk type comprising a sintered body consisting essentially of 0.1 to 5.0 mole percent of bismuth oxide (Bi 2 O 3 ), 0.01 to 5.0 mole percent of germanium oxide (GeO 2 ), 0.1 to 5.0 mole percent of nickel oxide (NiO), 0.1 to 3.0 mole percent of cobalt oxide (Co 2 O 3 ), 0.1 to 3.0 mole percent of manganese oxide (MnO), 0.1 to 3.0 mole percent of titanium oxide (TiO 2 ) and 0.01 to 3.0 mole percent of chromium oxide (Cr 2 O 3 ), the remainder being zinc oxide and electrodes applied to opposite surfaces of said sintered body.
References Cited (Backward Citations)
US3663458A
Cited
US3842018A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-04-27 | 1979-10-27 | 1980-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-04-27 | 1983-10-27 | 1984-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-04-27 | 1987-10-27 | 1988-04-27 | $7700.00 | Window Closed / Lapsed |