Hitachi Chemical Company, Ltd.

Yutaka Taniguchi

Yoshiyuki Tsuru

Yorio Iwasaki

Kouichi Tsuyama

Fumio Suzuki

Tadashi Isono

Atsushi Nishimura

Masayoshi Ikeda

Kousuke Takada

Hisaji Kobori

Wataru Shimizu

Yukihisa Hiroyama

Mituo Teppozuka

A current protector comprising an organic resin-made insulating substrate, a pair of terminals formed at both ends of the insulating substrate, and an electrical conductor electrically connecting the terminals and having a thickness of 3-8 .mu.m and formed in or on the insulating substrate, is excellent in suppressing ignition and smoking at the time of blowing, and can be improved in clearing characteristics by various modifications.

Current protector

A chip fuse comprising an organic resin-made insulating substrate, a pair of electrodes formed at terminals of said organic resin-made insulating substrate, current protecting element wiring portions and a current protecting element positioned between said pair of electrodes and housed in said organic resin-made insulating substrate, said current protecting element having a thickness of 3-8 .mu.m and being supported on an organic resin layer having a high tracking resistance, and at least one space being formed at least on the current protecting element side, does not cause ignition nor smoking and is excellent in clearing characteristics.

Chip fuse and process for production thereof

A surface of ceramic plate is roughened uniformly by immersing in a mixed solution comprising NH.sub.4 F, (NH.sub.4).sub.2 SO.sub.4, H.sub.2 SO.sub.4 and H.sub.2 O, followed by immersion in molten NaOH, and the resulting surface roughened ceramic plate can be used for producing a ceramic wiring board.

Surface roughening of ceramics and application to production of ceramic

Growing community of inventors

Ibaraki-ken, Japan

Yutaka Taniguchi