RA-51
Filed: May 19, 1965
COMMINUTED TITANIUM DIOXIDE
Owned by: NATIONAL LEAD COMPANY
Serial Number: 72219247
RC
Filed: May 19, 1965
COMPOSITE TITANIUM DIOXIDE-CALCIUM SULFATE PIGMENT
Owned by: NATIONAL LEAD COMPANY
Serial Number: 72219248
RC-HT
Filed: May 19, 1965
COMPOSITE TITANIUM DIOXIDE-CALCIUM SULFATE PIGMENT
Owned by: NATIONAL LEAD COMPANY
Serial Number: 72219249
RC-HT-X
Filed: May 19, 1965
COMPOSITE TITANIUM DIOXIDE-CALCIUM SULFATE PIGMENT
Owned by: NATIONAL LEAD COMPANY
Serial Number: 72219250
CELLEX
Filed: June 21, 1965
DRILLING MUD ADDITIVES COMPRISING SODIUM CARBOXYMETHYLCELLULOSE
Owned by: NATIONAL LEAD COMPANY
Serial Number: 72221622
DEXTRID
Filed: November 2, 1965
STABILIZED POLYSACCHARIDE FOR USE IN WELL DRILLING FLUIDS
Owned by: NATIONAL LEAD COMPANY
Serial Number: 72232010
GELTONE
Filed: November 2, 1965
GELLING AGENT FOR USE AS AN ADDITIVE TO OLEAGINOUS OIL WELL DRILLING FLUIDS
Owned by: NATIONAL LEAD COMPANY
Serial Number: 72232011
DURATONE
Filed: November 2, 1965
OIL DISPERSIBLE COLLOID FOR USE IN DRILLING MUDS
Owned by: NATIONAL LEAD COMPANY
Serial Number: 72232012
SF-100
Filed: November 2, 1965
ADDITIVE FOR INCORPORATION WITH OIL TO FORM OIL MUD CASING PACKS AND SPOTTING FLUIDS FOR FREEING DRILL PIPE AS USED IN WELL…
Owned by: NATIONAL LEAD COMPANY
Serial Number: 72232013
CC-16
Filed: November 2, 1965
DISPERSANTS FOR CONTROL OF FILTRATION AND VISCOSITY OF SUSPENSIONS
Owned by: NATIONAL LEAD COMPANY
Serial Number: 72232014
SKOT-FREE
Filed: November 2, 1965
LIQUID CONCENTRATE FOR RELEASING PRESSURE BOUND DRILL PIPE
Owned by: NATIONAL LEAD COMPANY
Serial Number: 72232015
BENAQUA
Filed: February 2, 1966
MODIFIED CLAYS USEFUL AS GELLANTS
Owned by: NATIONAL LEAD COMPANY
Serial Number: 72237866
23A
Filed: June 9, 1966
PIGMENT FOR FLAME-RETARDANT COATINGS
Owned by: NATIONAL LEAD COMPANY
Serial Number: 72247716
CQ
Filed: November 8, 1966
VISCOSITY CONTROL AGENT FOR WELL DRILLING FLUIDS
Owned by: NATIONAL LEAD COMPANY
Serial Number: 72258243
HYDROSET
Filed: December 16, 1966
LEAD OXIDES, MIXTURES OF LEAD OXIDES AND METALLIC LEAD, WITH OR WITHOUT ADMIXTURE OF EXPANDERS, FOR USE IN THE MANUFACTURE…
Owned by: NATIONAL LEAD COMPANY
Serial Number: 72260949
Y47
Filed: June 21, 1967
PIGMENT ESPECIALLY ADAPTED FOR YELLOW TRAFFIC MARKING PAINTS
Owned by: NATIONAL LEAD COMPANY
Serial Number: 72274445
