NRT
Mark Identification

NRT

Serial Number

88359410

Filing Date

Mar 27, 2019

Trademark by

CARBO CERAMICS INC.

Classification Information

non-radioactive chemical substances, used as markers, to be added to gravel pack material for sand control operations for determining the location of the gravel pack material; non-radioactive chemical substances, used as markers, to be added to cement used in oil and gas wells for determining the location of the cement

Chemicals