Tdk Corporation

Shouichi Iwaya

Hitoshi Masumura

Munemitsu Hamada

Makoto Morita

Isao Fujiwara

Masahiro Yahagi

Teruo Taguchi

Tadashi Ogasawara

Setuo Sasaki

Shigeru Itou

Hitoshi Kudou

High voltage capacitor and magnetron

A ceramic piezoelectric, includes a thick core formed of a sintered ceramic material, and a pair of electrodes formed on opposing end faces of the core, wherein the electrodes are a reduced form of the ceramic material of the core. The electrodes may also be a reduced layer of an oxide formed on the ceramic material of the core.

Ceramic piezoelectric element with electrodes formed by reduction

A ceramic capacitor, includes a thick core formed of a sintered ceramic material, and a pair of electrodes formed on opposing end faces of the core, wherein the electrodes are a reduced form of the ceramic material of the core. The electrodes may also be a reduced layer of an oxide formed on the ceramic material of the core.

Ceramic capacitor with electrodes formed by reduction

A discharge lamp device includes a tube, and a cathode disposed in said tube and made of a valence-compensated semiconductor ceramic material, or a forcibly reduced semiconductor ceramic material, or a valence-compensated and forcibly reduced semiconductor ceramic material. Since the cathode does not include an electron-emitting material, but uses a semiconductor ceramic material, no vapor is produced by the cathode and also the cathode does not react with mercury vapor filled in the tube. Therefore, the discharge lamp device has improved characteristics such as greater heat resistance, better chemical resistance, and improved discharge characteristics. The discharge lamp device is less costly because the semiconductor ceramic material used as the cathode is inexpensive.

Discharge lamp device having semiconductor ceramic cathode

Growing community of inventors

Tokyo, Japan

Shouichi Iwaya