Matsushita Electric Industrial Co., Ltd.

Yoshio Iida

Mikio Matsuura

Koreaki Nakata

Takeshi Masuyama

Tomi Sato

Nobuhiro Hamasaki

Wataru Mizushima

Toshioki Amemiya

A method for making an electrolytic capacitor. A valve metal powder of the sponge type is compressed into a compact body and other usual steps including anodization and electrode application are carried out thereon. Mainly due to the use of sponge type valve metal powder, this method makes it unnecessary to carry out the conventionally employed step of sintering the compact body and produces an electrolytic capacitor having properties better than those obtained by the conventional method. This invention also provides an electrolytic capacitor characterized by the use of sponge type valve metal powder and specific lubricant materials.

Method of making an electrolytic capacitor and electrolytic capacitor

A method for detecting the presence of a reducing material in a gas phase which involves heating a gas sensor, which has, as a major part, a partially dehydrated iron hydroxide having electrodes applied thereto, to a temperature less than 500.degree. C and bringing the gas sensor in contact with the gas phase of the reducing material or a gaseous mixture containing the reducing material. The gas sensor can be easily fabricated, and when exposed to a reducing material it undergoes a rapid decrease in electric resistance.

Method for detecting a reducing material in a gas phase

A voltage variable resistor is provided comprising a sintered body, electrodes on opposite major surfaces of the body and leads connected to the electrodes. The sintered body consists of zinc oxide and an additive comprising 0.05 to 15.0 mole % of one member selected from the group consisting of aluminum fluoride, beryllium fluoride, cerium fluoride, nickel fluoride and vanadium fluoride.

Voltage variable resistor

Growing community of inventors

Suita, Japan

Yoshio Iida