申请人 |
NKK CORP., TOKIO/TOKYO;NIPPON SODA CO. LTD., TOKIO/TOKYO;TAKEDA CHEMICAL INDUSTRIES, LTD.;JAPAN SCIENCE AND TECHNOLOGY CORP., KAWAGUCHI;TAKASAGO INTERNATIONAL CORP., TOKIO/TOKYO |
发明人 |
IKARIYA, TAKAO;OHKUMA, TAKESHI;OOKA, HIROHITO;HASHIGUCHI, SHOHEI;SEIDO, NOBUO;NOYORI, RYOJI |