Teijin Limited

Teijin Carbon Europe Gmbh

The Japan Iron and Steel Federation

Shuhei Yoshida

Toru Kaneko

Yosuke Nakamura

Takaya Suzuki

Ronny Wockatz

Hidekazu Yoshikawa

Hironori Kawamoto

Dirk Ortmanns

Hiroyuki Koyama

Takafumi Saji

Syoji Takase

An object of the present invention is to provide a carbon fiber which exhibits excellent strength development rate when used in a composite material. The present invention that solves the problems is a carbon fiber which simultaneously satisfies the following formulae (1) and (2):&#x2264;3&#x2003;&#x2003;(1)TS&#xd7;&#x3e;6.0&#xd7;10&#x2003;&#x2003;(2)

Carbon fiber bundle, prepreg, and fiber-reinforced composite material

A coke oven and a method of operating the same, capable not only of achieving a uniform combustion temperature heightwise within a combustion chamber when a rich gas or a lean gas is burnt, but also of reducing NO content in the waste gas, while eliminating localized high-temperature combustion. The combustion chamber of the coke oven comprises a rich-gas port located near an oven wall bordering a carbonization chamber in the bottom of combustion chamber, and the midpoint P , connecting the center P of a lean-gas port and the center P of an air port , is on the side opposite to the rich-gas port relative to the center line CL of the combustion chamber. (See FIG. )

Coke oven and method of operating the same

Growing community of inventors

Osaka, Japan

Shuhei Yoshida