Denso Corporation

Nippon Soken, Inc.

Noriaki Kihara

Eturo Yasuda

Takashi Yamamoto

Makoto Shirai

Toshiatsu Nagaya

Daisuke Makino

Hitoshi Shindo

Atsuhiro Sumiya

Hirokatsu Mukai

Shinya Teranishi

Yasunori Suzuki

Takumi Ushikubo

Tekehito Kimata

The particulate matter detection element is constituted of a laminated body including first and second electrode layers each having a plate-like shape and a thickness between 50 &#x3bc;m and 500 &#x3bc;m laminated on each other through an intermediate insulating layer having a plate-like shape and a thickness between 3 &#x3bc;m and 20 &#x3bc;m. A cross-sectional surface of the laminated body in the lamination direction is used as a detection surface of the particulate matter detection element.

Particulate matter detection element and method of manufacturing same

Methods of manufacturing a ceramic sheet and a gas sensing element are disclosed. At least ceramic powder, a binder and a plasticizer are blended and mixed in slurry. The slurry is formed into unfired green sheets, on which paste is printed. Each of the unfired green sheets has porosity greater than 5%. In the manufacturing methods, the unfired green sheets are pressurized with a pressure of 10 MPa at a temperature above 60&#xb0; C., after which the paste is printed on surfaces of the unfired green sheets. In the method of manufacturing the gas sensing element, a shielding layer, a porous diffusion resistance layer and the unfired green sheets for a sensing layer, a reference gas airspace forming layer and a heating layer are stacked to form a stacked ceramic body, whish is fired to obtain the gas sensing element.

Method of manufacturing ceramic sheet and method of manufacturing gas sensing element

A method of manufacturing large-sized laminated dielectrics of high quality which permit adjustment of the atmosphere during sintering process to be accomplished easily, and which can eliminate the problems such as expansion due to reaction with the atmosphere gas. When a laminated body , consisting of oxide dielectric layers and inner electrode layers having a base metal such as Cu as a main component, is sintered in a reducing atmosphere, a mixed gas having CO gas as a main component and containing optional amount of CO gas and O gas is used. By using the equilibrium system of CO &rlarr;2CO&plus;(1/2)O and adjusting the amounts of CO gas and O gas, oxygen partial pressure in the atmosphere gas can be easily and stably adjusted and fluctuation and variation in the atmosphere can be suppressed.

Method for manufacturing laminated dielectrics

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Okazaki, Japan

Noriaki Kihara