4. Metal treatment
  5. Process of modifying or maintaining internal physical...
  6. Carburizing or nitriding using externally supplied carbon or...

Hiroshi Yarita

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High strength spring steel and process for producing same

Metal treatment – Stock – Ferrous
Patent

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High-strength oil-tempered steel wire with excellent spring fabr

Metal treatment – Stock – Ferrous
Patent

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Process for producing a coil spring

Metal treatment – Process of modifying or maintaining internal physical... – Carburizing or nitriding using externally supplied carbon or...
Patent

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Semiconductor device reducing warping due to heat production

Active solid-state devices (e.g. – transistors – solid-state diode – Housing or package – With provision for cooling the housing or its contents
Reexamination Certificate

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Profile ID: LFUS-PAI-P-150251

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