WATER-RETAINING AGENT FOR WELL CEMENTING AND CEMENT SLURRY CONTAINING THE SAME,申请号JP19890214942-传众专利搜索

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发明名称	WATER-RETAINING AGENT FOR WELL CEMENTING AND CEMENT SLURRY CONTAINING THE SAME
摘要
申请公布号	JPH0379690(A)	申请公布日期	1991.04.04
申请号	JP19890214942	申请日期	1989.08.23
申请人	NIPPON SHOKUBAI KAGAKU KOGYO CO LTD	发明人	TANAKA YASUMASA;KURAHASHI MASATOSHI;MINAMI KENJI;SANO SADANORI
分类号	E21B21/00;C09K8/04	主分类号	E21B21/00
代理机构		代理人
主权项
地址

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