Osaka Gas Company Limited

Nireco Corporation

Makihiko Mori

Toyohiro Maeda

Yoshiteru Nakagawa

Satoshi Kibe

Katsumi Fujita

Kazuo Nakamura

Yasunori Goda

Kanichiro Tanabe

Atsushi Kimura

Pitch substantially free from primary and secondary QI components and solids comprising secondary QI components are prepared by centrifuging coal tar or coal tar pitch at a high temperature, heat-treating the separated supernatant liquid and centrifuging again the liquid at a high temperature.

Process for treating coal tar or coal tar pitch

Process for preparing pitch

A method and an apparatus for automatic quantitative measurement of textures by image analysis for measuring textures of a material containing various optically anisotropic textures. An image of the material is divided into a plurality of sections and brightness of each section is classified into a plurality of stages to be stored as gray levels of the sections or pixels. Image patterns of the textures are recognized on the basis of gray level variations observed before and after a mask movement, and the textures of the material are determined according to predetermined criteria.

Method and apparatus for automatic quantitative measurement of textures

Growing community of inventors

Kitakatsuragi, Japan

Makihiko Mori