Mark Identification

PRESSUR SEAL

Serial Number

75547485

Filing Date

Sep 3, 1998

Registration Date

Jan 16, 2001

Trademark by

TXI OPERATIONS LP

Classification Information

WELL ADDITIVE MATERIALS, NAMELY, EXPANDED CLAY AND SHALE AGGREGATES AS ADDITIVES IN DRILLING FLUIDS AND CEMENTING SLURRIES TO PREVENT LOSS OF CIRCULATION IN A WELL AND TO ENHANCE THE COMPRESSIVE FLEXURAL AND TENSILE STRENGTH OF CEMENT SHEATHS

Chemicals