Inventor

OKATSU MITSUHIRO

JP26 patents

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

OKATSU MITSUHIRO

JFE STEEL CORP

High-strength seamless steel pipe for oil country tubular goods and method of producing the same

High-strength seamless steel pipe for oil country tubular goods and method of producing the same

High-strength seamless steel pipe for oil country tubular goods and method of producing the same

High-strength seamless steel pipe for oil country tubular goods and method of producing the same

Low alloy high strength seamless steel pipe for oil country tubular goods

Low alloy high strength thick-walled seamless steel pipe for oil country tubular goods

Seamless steel pipe having desirable sulfuric acid dew-point corrosion resistance, and method for manufacturing same

High-strength seamless steel pipe and method for manufacturing same

High-strength seamless steel pipe and method for manufacturing same

Low-alloy high-strength seamless steel pipe for oil country tubular goods

Low-alloy high-strength seamless steel pipe for oil country tubular goods

Low-alloy high-strength seamless steel pipe for oil country tubular goods

High-strength seamless steel pipe for oil country tubular goods, and production method for high-strength seamless steel pipe for oil country tubular goods

High-strength seamless steel pipe for oil country tubular goods, and method for producing the same

High-strength seamless steel pipe for oil country tubular goods and method of producing the same

Seamless steel pipe having desirable sulfuric acid dew-point corrosion resistance, and method for manufacturing same

Round bar tensile test specimen for sulfide stress corrosion cracking test of a steel, test method for sulfide stress corrosion cracking of steel, and seamless steel pipe having excellent resistance to sulfide stress corrosion cracking

KAWASAKI STEEL CO

Method of producing a bainite steel product

Method of manufacturing thick steel product of high strength and high toughness having excellent weldability and minimal variation of structure and physical properties

Bainitic steel materials having a less scattering of properties and method of producing the same

Method of producing bainitic steel materials having a less scattering of properties

High-strength high-toughness steel products

SHIMAMURA JUNJI

High strength steel pipe for low-temperature usage having excellent buckling resistance and toughness of welded heat affected zone and method for producing the same

High-strength steel plate, method of producing the same, and high-strength steel pipe

HAYAKAWA NAOYA

High-strength welded steel pipe including weld metal having high cold-cracking resistance and method for manufacturing the same

KOO JAYOUNG

Low yield ratio dual phase steel linepipe with superior strain aging resistance