申请人 |
PUB WORKS RES INST MINISTRY OF CONSTR;DOBOKU KENKYU CENTER;S L S:KK;OKUMURA CORP;KUMAGAI GUMI CO LTD;KONOIKE CONSTR LTD;SANSHIN KENSETSU KOGYO KK;TOYOBO CO LTD;HIROSE & CO LTD;MITSUI SEKIKA SANSHI KK;MITSUBISHI CHEM CORP;MITSUBISHI CONSTR CO LTD;TEIJIN LTD |
发明人 |
MIKI HIROSHI;HAYASHI YOSHIYUKI;FUKUYAMA SHINICHI;HORIUCHI HARUO;NAGASAKA YUJI;OKAMURA YASUHIRO |