4. Metal treatment
  5. Stock
  6. Ferrous

Osamu Umezawa

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Fine ferrite-based structure steel production method

Metal treatment – Process of modifying or maintaining internal physical... – Heating or cooling of solid metal
Reexamination Certificate

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Production method of ultra fine grain steel

Metal treatment – Process of modifying or maintaining internal physical... – Heating or cooling of solid metal
Reexamination Certificate

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Ultra-fine grain steel and method for producing it

Metal treatment – Stock – Ferrous
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2062572

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