OILSTATE, INC. Trademarks
KEM-ZONE
Filed: March 12, 1962
CHEMICAL FOR USE IN OIL WELL DRILLING FLUIDS TO UNBLOCK PRODUCING ZONES INVADED BY DRILLING MUD FILTRATE
Owned by: OILSTATE, INC.
Serial Number: 72139663
X-TERNOL
Filed: March 12, 1962
CHEMICAL FOR THE PREPARATION AND MAINTENANCE OF EXTERNAL OIL PHASE (INVERTED) EMULSION DRILLING MUDS
Owned by: OILSTATE, INC.
Serial Number: 72139664
