Stainless steel for oil wells and stainless steel pipe for oil wells

Assignee

• Nippon Steel & Sumitomo Metal

Inventors

• Shinjiro Nakatsuka (2 patents)
• Taro Ohe (6 patents)
• Hisashi Amaya (25 patents)
• Hideki Takabe (15 patents)
• Yohei Otome (7 patents)
• Yusaku Tomio (19 patents)
• Masanao Seo (4 patents)
• Tomohiko Omura (36 patents)
• Kunio Kondo (69 patents)

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