Inventor

KAWAI TAKAMASA

JP22 patents

⚠️ This page may combine multiple inventors who share the name “KAWAI TAKAMASA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

KAWAI TAKAMASA

JFE STEEL CORP

Threaded joint for oil well steel pipe

Threaded joint for pipes

Threaded joint

Threaded joint for tube

Screw joint for oil well pipe

Threaded joint for pipes

Agent for forming solid lubricating coating film, oil country tubular goods, and threaded joint for oil country tubular goods

Agent, oil country tubular goods, and threaded joint for oil country tubular goods

Threaded joint for oil country tubular goods

Threaded joint for heavy-walled oil country tubular goods

Threaded joint for pipes

Threaded joint for oil well tubing

Agent for forming solid lubricating coating film, oil country tubular goods, threaded joint for oil country tubular goods, and method for manufacturing oil country tubular goods

Make-up/break-out evaluation method for threaded joint for oil country tubular goods

Threaded pipe joint

Threaded joint for steel pipes

Threaded joint for oil country tubular goods

Threaded joint for oil country tubular goods

KAWAI TAKAMASA

Method for performing temper rolling on steel strip and method for manufacturing high tensile-strength cold rolled steel sheet

Threaded joint for pipes

YOSHIKAWA MASAKI

Threaded joint for steel pipes

SONOBE OSAMU

Threaded joint for pipe