Speed calculation device and power conversion device

Assignee

• Hitachi Industrial Equipment Systems Co.

Inventors

• Hiroshi Watanabe (776 patents)
• Masataka Sasaki (20 patents)
• Masahiro Hiraga (19 patents)
• Yusuke Arao (9 patents)
• Atsuhiko Nakamura (10 patents)
• Hiroyuki Tomita (100 patents)
• Kazushige Hotta (30 patents)
• Yusaku Onuma (11 patents)

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