Inventor

YUGA MASAO

JP45 patents

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

YUGA MASAO

JFE STEEL CORP

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

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

Thick-walled, high tensile strength steel with excellent CTOD characteristics of the weld heat-affected zone, and manufacturing method thereof

High-tensile steel plate giving welding heat-affected zone with excellent low-temperature toughness, and process for producing same

Stainless steel seamless pipe and method for manufacturing same

Duplex stainless steel and method for producing same

Abrasion-resistant steel plate and method for manufacturing the same

Stainless steel seamless pipe and method for manufacturing same

Stainless steel pipe and method for manufacturing same

Duplex stainless steel seamless pipe and method for manufacturing same

Seamless pipe and method for manufacturing 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

Stainless steel seamless pipe and method for manufacturing stainless steel seamless pipe

Stainless steel seamless pipe and method for manufacturing same

Stainless steel seamless pipe and method for manufacturing stainless steel seamless pipe

High-strength stainless steel seamless pipe for oil country tubular goods and method for manufacturing same

Martensitic stainless steel seamless pipe for oil country tubular goods, and method for manufacturing same

Martensitic stainless steel seamless pipe for oil country tubular goods, and method for manufacturing same

Stainless steel seamless pipe

Martensitic stainless steel seamless pipe for oil country tubular goods, and method for manufacturing same

Martensitic stainless steel seamless pipe for oil country tubular goods, and method for manufacturing same

Dual-phase stainless steel, and method of production thereof

Martensitic stainless steel seamless pipe for oil country tubular goods, and method for manufacturing same

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

High-strength stainless steel seamless pipe for oil country tubular goods, and method for manufacturing same

High strength seamless stainless steel pipe and method for producing same

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

Dual-phase stainless steel and dual-phase stainless steel seamless pipe

Stainless steel pipe and method for manufacturing same

Duplex stainless steel and method for manufacturing same, and duplex stainless steel pipe

High-tensile-strength steel plate and process for producing same

Weld joint

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

YUGA MASAO

High tensile strength steel plate having excellent weld heat-affected zone low-temperature toughness and method for producing same