Toho Beslon Co., Ltd.

The Japan Tobacco Salt Public Corporation

Toho Rayon Co., Ltd.

Kenji Niijima

Hiroyasu Ogawa

Kazuo Maeda

Kazuo Izumi

Minoru Hirai

Kenji Shimazaki

Yuriko Anzai

Hiroyuki Kosuda

Katsuichi Noguchi

A friction material containing from about 0.5-29 wt % of carbonaceous fibers with a bond nitrogen content of from about 14 to 21 wt %, an auxiliary material and a thermosetting resin. The material has good wear and temperature resistance characteristics and can be used in power transmissions and brakes.

Friction material

A friction material comprising a carbon fiber reinforced carbon with an oxidation temperature of at least 800.degree. C. and a crystallinity index of matrix carbon of from 2.3 to 5.0, a process for the production of the same, and a friction element comprising the same.

Carbon fiber reinforced carbon friction element and method of making

A tobacco smoke filter capable of selectively removing irritating materials and unpleasant bitter components from tobacco smoke and containing as a filter element nitrogen-containing activated carbon fibers produced by oxidizing acrylonitrile polymer fibers and then activating the oxidized fibers.

Tobacco smoke filter

Growing community of inventors

Shizuoka, Japan

Kenji Niijima