LCP 2000
Filed: July 29, 1999
Drilling mud and chemical drilling mud additives for use in the oil and gas well drilling industry
Owned by: DORF KETAL WELL SERVICES, LLC
Serial Number: 75763285
FLC 2000
Filed: July 29, 1999
Drilling mud containing filtrate loss control fluids and chemical drilling mud additives, namely, containing filtrate loss…
Owned by: DORF KETAL WELL SERVICES, LLC
Serial Number: 75763287
STAR HIB
Filed: October 2, 2013
Chemical additive for water-based drilling fluids, namely, low-chloride organic inhibitor for control of swelling shales…
Owned by: DORF KETAL WELL SERVICES, LLC
Serial Number: 86080475
STAR SHIELD
Filed: October 16, 2013
Additive for water-based, oil-based and synthetic based drilling and completion fluids, namely, chemical which reduces wellbore…
Owned by: DORF KETAL WELL SERVICES, LLC
Serial Number: 86093222
WELLBORE SHIELDING
Filed: July 7, 2015
chemical additives for oil well drilling fluids
Owned by: DORF KETAL WELL SERVICES, LLC
Serial Number: 86685111
SHIELD BOND
Filed: July 7, 2015
Chemical additives for oil well drilling fluids
Owned by: DORF KETAL WELL SERVICES, LLC
Serial Number: 86685127
FLC
Filed: November 11, 2015
drilling fluid additives
Owned by: DORF KETAL WELL SERVICES, LLC
Serial Number: 86817126
POWERCLEAN
Filed: May 13, 2016
chemical additives for oil well drilling fluids
Owned by: DORF KETAL WELL SERVICES, LLC
Serial Number: 87036645
IMPACT
Filed: August 11, 2016
Chemical additives for drilling fluids and completion fluids for use in the oil and gas industry
Owned by: DORF KETAL WELL SERVICES, LLC
Serial Number: 87135562
MAXVERT
Filed: June 13, 2017
organic chemical additives used in oil and gas well treatment operations
Owned by: DORF KETAL WELL SERVICES, LLC
Serial Number: 87487030
ROCKBLOCK
Filed: January 29, 2018
Drilling mud additive for use in oil and gas well drilling
Owned by: DORF KETAL WELL SERVICES, LLC
Serial Number: 87774965
SIMSHIELD
Filed: July 10, 2019
Computer software used to design drilling fluids and cement spacer systems for oil and gas drilling
Owned by: DORF KETAL WELL SERVICES, LLC
Serial Number: 88508205
HTR
Filed: September 20, 2019
Chemical additives for cementing design to be used in the oil and gas industry
Owned by: DORF KETAL WELL SERVICES, LLC
Serial Number: 88625174
MTR
Filed: September 20, 2019
Chemical additives for cementing design to be used in the oil and gas industry
Owned by: DORF KETAL WELL SERVICES, LLC
Serial Number: 88625178
CEMSHIELD
Filed: September 3, 2021
Chemical additives for oil well drilling fluids
Owned by: DORF KETAL WELL SERVICES, LLC
Serial Number: 97011640
POWERSCRUB
Filed: February 24, 2023
Chemical additives for oil well drilling fluids
Owned by: DORF KETAL WELL SERVICES, LLC
Serial Number: 97810034
POWER SCOUR
Filed: October 19, 2023
Chemical additives for well cementing and completion fluids for use in the oil and gas industry
Owned by: DORF KETAL WELL SERVICES, LLC
Serial Number: 98231101
