Eiji Nakayama

3 Patents

• US126034782026

  Semiconductor Laser and Semiconductor Laser Device

  SONY GROUP CORPORATION

  0 cites
• US121664412024

  Work Machine

  Koki Holdings Co., Ltd.

  0 cites
• US116268072023

  DC Power Supply Device

  Koki Holdings Co., Ltd.

  0 cites