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US Patent 7118637 Nano-composite martensitic steels

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US Patent 7214278 High-strength four-phase steel alloys

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US Patent 7284770 Thread protector for tubular members

US Patent 7310867 Snap in place gasket installation method

US Patent 7431347 Hollow sucker rod connection with second torque shoulder

US Patent 7464449 Method of forming a high-strength sealed connection for expandable tubulars

US Patent 7475476 Method for producing a threaded tubular connection sealed to the outside

US Patent 7478842 Coupled connection with an externally supported pin nose seal

US Patent 7506900 Threaded joint for pipes provided with seal

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US Patent 7744708 Methods of producing high-strength metal tubular bars possessing improved cold formability

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US Patent 8007601 Methods of producing high-strength metal tubular bars possessing improved cold formability

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US Patent 8016362 Occupant restraint apparatus

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US Patent 8262140 Threaded joint with improved resilient seal ring

US Patent 8317946 Seamless steel pipe and method for manufacturing the same

US Patent 8328958 Steels for sour service environments

US Patent 8328960 High strength bainitic steel for OCTG applications

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US Patent 8414715 Method of making ultra high strength steel having good toughness

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US Patent 8636856 High strength steel having good toughness

US Patent 8821653 Heavy wall steel pipes with excellent toughness at low temperature and sulfide stress corrosion cracking resistance

US Patent 8840152 Thin-walled pipe joint

US Patent 8926771 Seamless precision steel tubes with improved isotropic toughness at low temperature for hydraulic cylinders and process for obtaining the same

US Patent 9004544 Threaded joint for tubes, pipes and the like

US Patent 9163296 Coiled tube with varying mechanical properties for superior performance and methods to produce the same by a continuous heat treatment

US Patent 9187811 Low-carbon chromium steel having reduced vanadium and high corrosion resistance, and methods of manufacturing

US Patent 9222156 High strength steel having good toughness

US Patent 9234612 Threaded joint with energizable seal

US Patent 9340847 Methods of manufacturing steel tubes for drilling rods with improved mechanical properties, and rods made by the same

US Patent 9383045 Threaded joint with resilient seal ring

US Patent 9528327 Coiled tubing optimized for long, horizontal completions

US Patent 9541224 Method of manufacturing coiled tubing using multi-pass friction stir welding

US Patent 9598746 High strength steel pipes with excellent toughness at low temperature and sulfide stress corrosion cracking resistance

US Patent 9708681 High-strength seamless steel pipe for oil well use having excellent resistance to sulfide stress cracking

US Patent 9745640 Quenching tank system and method of use

US Patent 9803256 High performance material for coiled tubing applications and the method of producing the same

US Patent 11377704 High performance material for coiled tubing applications and the method of producing the same

US Patent 6851727 Threaded pipe joint

US Patent 6857668 Replaceable corrosion seal for threaded connections

US Patent 6883804 Seal ring having secondary sealing lips

US Patent 6905150 Threaded pipe joint

US Patent 6921110 Threaded joint for tubes

US Patent 6958099 High toughness steel material and method of producing steel pipes using same

US Patent 6971681 Threaded pipe with surface treatment

US Patent 6991267 Assembly of hollow torque transmitting sucker rods and sealing nipple with improved seal and fluid flow

US Patent 7014223 Screw threaded joint for continuous-profile tubes

US Patent 7066499 Pipe integral threaded joint

US Patent 7074283 Low alloy steel

US Patent 7083686 Steel product for oil country tubular good

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B21C 37/08