Hisayoshi Sato

3 Patents

• US124320612025

  Content Protection System

  HITACHI SOLUTIONS, Ltd.

  0 cites
• US119719982024

  Data Comparison Device, Data Comparison System, and Data Comparison Method

  HITACHI, Ltd.

  0 cites
• US118117412023

  Information Processing System and Information Processing Method

  Hitachi, Ltd.

  0 cites