Nixon & Vanderhye
Flexible carbon material
 A flexible carbon material is produced by carbonizing a composite material comprising carbon fibers having an average length of 6 to 50 mm and a binding agent. Carbon lumps are derived from the binding agent and are dispersed in a matrix of the carbon fibers so as to restrain a plurality of the carbon fibers while yet permitting relative slippage to occur as between the carbon fibers and carbon lumps such that the carbon fiber material exhibits a flexibility ratio D/d of not greater than 200 (where D is the diameter of curvature of the carbon material, when bent, just before breakage, and d is the thickness of the carbon material). The carbon fibers and lumps are preferrably present in an amount of from 5 to 50%, and 5 to 70% by volume, respectively, based upon the total volume of the carbon material. 
Kureha Kagaku Kogyo Kabushiki Kaisha
Y C D Y Y D Y Y Y Y
Y10T C04B D21H Y10T Y10T D21H Y10T Y10T Y10T Y10T
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Kiyomi Masumi Yukihiro Masatomo Naohiro Hiroyuki
Ohuchi Sagi Shibuya Shigeta Murayama Fukuda