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发明名称
METHOD FOR REDUCING THE VISCOSITY OF AQUEOUS FLUIDS
摘要
申请公布号
EP0330489(A3)
申请公布日期
1990.01.24
申请号
EP19890301822
申请日期
1989.02.24
申请人
HI-TEK POLYMERS, INC.
发明人
LANGEMEIER, PAUL W.;PHELPS, MARTHA A.;MORGAN, MICHAEL E.
分类号
E21B43/26;B02C19/06;C08K3/16;C08K5/3477;C09K3/00;C09K8/62;D06P5/00;(IPC1-7):E21B43/26;C08L5/14
主分类号
E21B43/26
代理机构
代理人
主权项
地址
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