Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
128 words
A metal oxide varistor which comprises; a sintered body containing a) ZnO as a principal component, and b), as auxiliary components, Bi, Co and Mn in amounts of 0.05 ~ 2 mole %, 0.05 ~ 2 mole % and 0.05 ~ 2 mole %, when calculated in terms of Bi 2 0 3 , Co 2 O 3 and MnO 2 , respectively, and at least one selected from Aℓ, In and Ga in amounts of 1 x 10 -4 ~ 3 x 10 -2 mole %, when calculated in terms of Aℓ 2 O 3 , In 2 0 3 and Ga203, respectively; said sintered material having been reheated at a temperature of 650 ~ 900°C after sintering; and a non-diffusible electrode provided on said sintered body.
Claim 2
Dependent Claim
128 words
A metal oxide varistor which comprises; a sintered body containing a) ZnO as a principal component, and b), as auxiliary components, Bi, Co and Mn in amounts of 0.05 ~ 2 mole %, 0.05 ~ 2 mole % and 0.05 ~ 2 mole %, when calculated in terms of Bi 2 0 3 , Co 2 O 3 and MnO 2 , respectively, and at least one selected from Aℓ, In and Ga in amounts of 1 x 10 -4 ~ 3 x 10 -2 mole %, when calculated in terms of Aℓ 2 O 3 , In 2 0 3 and Ga203, respectively; said sintered material having been reheated at a temperature of 650 ~ 900°C after sintering; and a non-diffusible electrode provided on said sintered body.
Claim 3
Dependent Claim
53 words
The metal oxide varistor according to Claim 1, wherein further contained as said auxiliary components are Sb, Mg and Ni in amounts of 0.1 ~ 3 mole %, 0.1 ~ 15 mole % and 0.05 ~ 2 mole % when calculated in terms of Sb 2 0 3 , MgO and NiO, respectively.
Claim 4
Dependent Claim
21 words
The metal oxide varistor according to Claim 1, wherein said sintered body is reheated at a temperature of 700 ~ 870°C.
Claim 5
Dependent Claim
35 words
The metal oxide varistor according to Claim 1, wherein said non-diffusible electrode is a paste electrode baked at such a temperature that may not cause the diffusion of frit components therein into said sintered body.
Claim 6
Dependent Claim
18 words
The metal oxide varistor according to Claim 1, wherein said non-diffusible electrode is an At flame-spray coated electrode.
Claim 7
Dependent Claim
17 words
The metal oxide varistor according to Claim 1, wherein said non-diffusible electrode is an Aℓ vapor-deposited electrode.
Claim 8
Dependent Claim
17 words
The metal oxide varistor according to Claim 1, wherein said non-diffusible electrode is an Aℓ sputtered electrode.
Claim 9
Dependent Claim
17 words
The metal oxide varistor according to Claim 1, wherein said non-diffusible electrode is a Ni electroless-plated electrode.