Inventor

STEIN MARA

US3 patents

Patents

3 patents

US5888943AMar 30, 1999

Drilling compositions and methods

BAROID DRILLING FLUIDS INC13 citations76

US6110876AAug 29, 2000

Drilling compositions and methods

BAROID DRILLING FLUIDS INC4 citations68

US6153669ANov 28, 2000

Drilling compositions and methods

BAROID DRILLING FLUIDS INC3 citations57