Matsushita Electric Industrial Co., Ltd.

Yasuharu Kikuchi

Kazuo Eda

Michio Matsuoka

Toru Ishida

Osamu Makino

Yasuhiko Horio

Tatsurou Kikuchi

The present invention relates to a base metal conductor multilayered substrate capable of being integral with thick film components such as thick film resistors and to a method for producing such substrate.

Multilayer ceramic substrate and method of making the same

The present invention provides a voltage-dependent resistor of the bulk-type in which zinc oxide (ZnO) powder and additives are admixed to form a sintered body composition having as the main constituent, zinc oxide, and in which the mixture is formed into a resistor body, the body is sintered, and electrodes are applied to the opposite surfaces of the sintered body, the improvement comprising the step of, prior to sintering and admixture with said zinc oxide, admixing all amount of boron oxide (B.sub.2 O.sub.3) with other additives in the form of a borosilicate glass, which is composed of 5 to 30 weight percent of boron oxide (B.sub.2 O.sub.3) and 70 to 95 weight percent of silicon oxide (SiO.sub.2). A process for the production of said resistor is also provided.

Voltage-dependent resistor and method of making the same

A voltage-dependent resistor of the layered structure type is provided by employing the nonohmic property of the hetero-junction between a zinc oxide layer and a metal oxide layer consisting essentially of at least one member selected from the group consisting of cobalt oxide, manganese oxide, barium oxide, strontium oxide, lead oxide and rare earth oxides.

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Moriguchi, Japan

Yasuharu Kikuchi