Sony Corporation

Chiyoda Corporation

Mitsubishi Oil Co., Ltd.

Research Association for the Utilization of Light Oil

Hitoshi Nozaki

Shinichi Inoue

Toshiji Makabe

Fumio Kumata

Kazuo Takahashi

Toshiyuki Ishii

Takao Ihashi

Yoshisuke Kuroda

A process for producing a spherical zeolite catalyst is disclosed, which comprises dropping a zeolite-containing alumina sol into a surfactant-containing oil phase from a dropping opening directly or through air to thereby form spherical droplets of the sol, and then allowing the droplets to gel in an aqueous alkaline solution phase underlying the oil phase and withdrawing the thus gelled droplets, said dropping of the sol being conducted while the dropping opening is being impulsed to thereby impart a spherical and uniform shape to the resulting zeolite particles containing alumina as a binder, and a novel apparatus therefor.

Process for producing spherical zeolite catalyst and apparatus for

A portable disc player has a casing. In the casing, there are enclosed: disc rotation driving means for rotating an optical disc; an optical head which is arranged so as to be movable in the radial direction of the optical disc; a signal processing section for executing a predetermined signal process to a signal which has been read out by the optical head; and control means for controlling the operations of the rotation driving means, the optical head, and the signal processing section on the basis of an input from an X-Y device and trigger buttons. A display unit comprising an outer cover on which an LCD display is arranged is rotatably attached to the casing.

Portable disc player

Growing community of inventors

Kanagawa, Japan

Hitoshi Nozaki