Nippondenso Co., Ltd.

Toyota Jidosha Kabushiki Kaisha

Nobuaki Kawahara

Hirofumi Suzuki

Hiroki Hoshizaki

Kazuo Oyobe

Hitoshi Niwa

Terutaka Kageyama

Shinichi Takeshima

Kiyoshi Kobashi

Mitsuru Asano

Makoto Ohkawa

Kenichiro Takama

Kiyomi Kobayashi

Yoshihiko Imamura

A low temperature sintering ceramic material, having low temperature sinterability and excellent thermal conductivity, is particularly suitable for use in making an IC substrate of a ceramic printed plate board. This low temperature sintering ceramic material has two composition types. One is a binary composition type ceramic material consisting essentially of MgO and B.sub.2 O.sub.3, and the other is a ternary composition type ceramic material composed of principal components consisting of MgO and B.sub.2 O.sub.3 and assisting components consisting of one or more selected from Li.sub.2 O, Na.sub.2 O, K.sub.2 O, a fluoride of an alkali metal and a fluoride of an alkaline earth metal. After sintering, MgO and B.sub.2 O.sub.3 are respectively contained at 50 to 90 mol% and 10 to 50 mol% on 100 mol% of the total amount of MgO and B.sub.2 O.sub.3.

Low temperature sintering ceramic material composition and process for

A ceramic heater body is formed in a plate shape, and has electrode attaching portions at both ends of the heater body. A plurality of openings are formed in the electrode attaching portion, and a metallized layer is formed on the inner peripheral surface of each of the openings. Electrodes having a plurality of wires are connected to the electrode attaching portions, for supplying power to the heater body. The metal wires are inserted into the openings formed having the metallized layers on the inner peripheral surfaces, and are secured by brazing to the metallized layers. The diameter of the metal wire is set to 0.5 to 3 mm, and the metal wires are buried in the openings, at a depth of 1 to 5 mm.

Ceramic heater apparatus with metal electrodes

A ceramic heater for regenerating a fine particle collecting filter which is exposed to exhaust gases at elevated temperatures. This ceramic heater comprises two electrode potions, a heat generation portion connected to the two electrode portions and a holding projection portion of a ceramic heater connected to the side of the heat generating portion. The two electrode portions, the heat generating portion and the holding projection portion are formed integrally.

Ceramic heater

The ceramic heater of the present invention is used for regenerating a fine particle collecting filter which is exposed to exhaust gases at elevated temperatures. In this ceramic heater, which is capable of being cantilevered, two electrode portions are provided on a single straight or curved line and heat generating portion is positioned on one side of said line. The heat generating portion comprises a ring-like portion and two leg portions integrally connected to the ring-like portion at two connecting portions which approximately bisect the ring-like portion. The two electrode portions are provided at fore ends of the leg portions respectively, and the ring-like portion and the two electrode portions conjointly form a triangle.

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Anjo, Japan

Nobuaki Kawahara