Beijing
China
2
2015-10-29
Xiaodan Bai from Beijing, CN has applied for patents for these inventions. The list has both pending applications and granted patents:
CLEAN FRACTURING FLUID THICKENER OF MULTI-BLOCK ASSOCIATIVE COPOLYMER (APCF) AND METHOD PREPARING THEREOF
LIQUEFIED POLYMER FRACTURING FLUID THICKENER AND PREPARATION METHOD THEREOF
968694 ⎘